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PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER DUAL LDO CONTROLLER

  

Datasheet PDF


Part Name(s) : SC414 SC424 SC414MLTRT SC424MLTRT SC414EVB SC424EVB Semtech
Semtech Corporation
Description : 6A Integrated FET Regulator with 5V LDO

Description
The SC414/SC424 is a stand-alone synchronous buck regulated power supply. It features integrated power MOSFETs, a bootstrap switch, and a 5V LDO in a space-saving MLPQ-4x4mm 28-pin package. The device is highly efcient and uses minimal PCB area. It uses pseudo-f xed frequency adaptive on-time operation to provide fast transient response.
The SC414/SC424 supports using standard capacitor types such as electrolytic or special polymer, in addition to ceramic, at switching frequencies up to 1MHz. The programmable frequency, synchronous operation, and select able power-save provide high efciency operation over a wide load range.
Additional features include cycle-by-cycle current limit, soft-start, under and over-voltage protection, programmable over-current protection, soft shutdown, and selectable power-save. The device also provides separate enable inputs for the PWM controller and LDO as well as a power good output for the PWM controller.
The input voltage can range from 3V to 28V. The wide input voltage range, programmable frequency, and 5V LDO make the device extremely flexible and easy to use in a broad range of applications. It can be used for single cell or multi-cell battery systems in addition to traditional DC power supply applications.
The 5V LDO or an external 3.3V to 5V supply can be used to provide the bias voltage for the SC414/SC424. When the SC414/SC424 is used as a 5V output switching regulator, the 5V LDO can be used as an initial bias supply for the device. Once the switch regulator output is in the switch over range, the LDO will be bypassed by the switcher output for optimum efciency.

Features
■ Input voltage — 3V to 28V
■ Internal power MOSFETs — 6A
■ Integrated bootstrap switch
■ Smart power-save protection
■ Integrated 5V, 150mA LDO with bypass capability
■ TC compensated RDS(ON) sensed current limit
■ Pseudo-fxed frequency adaptive on-time control
■ Designed for use with ceramic capacitors
■ Programmable VIN UVLO threshold
■ Independent enable for switcher and LDO
■ Selectable ultrasonic power-save (SC414)
■ Selectable power-save (SC424)
■ Internal soft-start and soft-shutdown at output
■ Internal reference — 1% tolerance
■ Over-voltage and under-voltage fault protection
■ Power good output
■ SmartDriveTM
■ Lead-free 4x4mm, 28 Pin MLPQ package
■ Fully WEEE and RoHS compliant, and halogen free

Applications
■ Notebook, desktop, tablet, and server computers
■ Networking and telecommunication equipment
■ Printers, DSL, and STB applications
■ Embedded applications
■ Power supply modules
■ Point of load power supplies

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Part Name(s) : LM3S808 LM3S808-IQC20 LM3S808-IQC20-A0 LM3S808-IQC20-A0T LM3S808-IQC20-A1 LM3S808-IQC20-A1T LM3S808-IQC20-A2 LM3S808-IQC20-A2T LM3S808-IQC20-B0 LM3S808-IQC20-B0T LM3S808-IQC20T LM3S808-IQC25 LM3S808-IQC25-A0 LM3S808-IQC25-A0T LM3S808-IQC25-A1 LM3S808-IQC25-A1T LM3S808-IQC25-A2 LM3S808-IQC25-A2T LM3S808-IQC25-B0 LM3S808-IQC25-B0T LM3S808-IQC25T LM3S808-IQC50 LM3S808-IQC50-A0 LM3S808-IQC50-A0T LM3S808-IQC50-A1 ETC2
Unspecified
Description : Microcontroller

[Luminary Micro, Inc.]

Architectural Overview
The Luminary Micro Stellaris® family of microcontrollers—the first ARM® Cortex™-M3 based controllers—brings high-performance 32-bit computing to cost-sensitive embedded microcontroller applications. These pioneering parts deliver customers 32-bit performance at a cost equivalent to legacy 8- and 16-bit devices, all in a package with a small footprint.
The LM3S808 microcontroller is targeted for industrial applications, including test and measurement equipment, factory automation, HVAC and building control, motion control, medical instrumentation, fire and security, and power/energy.
In addition, the LM3S808 microcontroller offers the advantages of ARMs widely available development tools, System-on-Chip (SoC) infrastructure IP applications, and a large user community.
Additionally, the microcontroller uses ARMs Thumb®-compatible Thumb-2 instruction set to reduce memory requirements and, thereby, cost. Finally, the LM3S808 microcontroller is code-compatible to all members of the extensive Stellaris® family; providing flexibility to fit our customers precise needs.
Luminary Micro offers a complete solution to get to market quickly, with evaluation and development boards, white papers and application notes, an easy-to-use peripheral driver library, and a strong support, sales, and distributor network.

Product Features
The LM3S808 microcontroller includes the following product features:
■ 32-Bit RISC Performance
   – 32-bit ARM® Cortex™-M3 v7M architecture optimized for small-footprint embedded applications
   – System timer (SysTick), providing a simple, 24-bit clear-on-write, decrementing, wrap-on-zero counter with a flexible control mechanism
   – Thumb®-compatible Thumb-2-only instruction set processor core for high code density
   – 50-MHz operation
   – Hardware-division and single-cycle-multiplication
   – Integrated Nested Vectored Interrupt Controller (NVIC) providing deterministic interrupt handling
   – 23 interrupts with eight priority levels
   – Memory protection unit (MPU), providing a privileged mode for protected operating system functionality
   – Unaligned data access, enabling data to be efficiently packed into memory
   – Atomic bit manipulation (bit-banding), delivering maximum memory utilization and streamlined peripheral control
■ Internal Memory
   – 64 KB single-cycle flash
      • User-managed flash block protection on a 2-KB block basis
      • User-managed flash data programming
      • User-defined and managed flash-protection block
   – 8 KB single-cycle SRAM
■ General-Purpose Timers
   – Three General-Purpose Timer Modules (GPTM), each of which provides two 16-bit timer/counters. Each GPTM can be configured to operate independently as timers or event counters: as a single 32-bit timer, as one 32-bit Real-Time Clock (RTC) to event capture, for Pulse Width Modulation (PWM), or to trigger analog-to-digital conversions
   – 32-bit Timer modes
      • Programmable one-shot timer
      • Programmable periodic timer
      • Real-Time Clock when using an external 32.768-KHz clock as the input
      • User-enabled stalling in periodic and one-shot mode when the controller asserts the CPU Halt flag during debug
      • ADC event trigger
   – 16-bit Timer modes
      • General-purpose timer function with an 8-bit prescaler
      • Programmable one-shot timer
      • Programmable periodic timer
      • User-enabled stalling when the controller asserts CPU Halt flag during debug
      • ADC event trigger
   – 16-bit Input Capture modes
      • Input edge count capture
      • Input edge time capture
   – 16-bit PWM mode
      • Simple PWM mode with software-programmable output inversion of the PWM signal
■ ARM FiRM-compliant Watchdog Timer
   – 32-bit down counter with a programmable load register
   – Separate watchdog clock with an enable
   – Programmable interrupt generation logic with interrupt masking
   – Lock register protection from runaway software
   – Reset generation logic with an enable/disable
   – User-enabled stalling when the controller asserts the CPU Halt flag during debug
■ Synchronous Serial Interface (SSI)
   – Master or slave operation
   – Programmable clock bit rate and prescale
   – Separate transmit and receive FIFOs, 16 bits wide, 8 locations deep
   – Programmable interface operation for Freescale SPI, MICROWIRE, or Texas Instruments synchronous serial interfaces
   – Programmable data frame size from 4 to 16 bits
   – Internal loopback test mode for diagnostic/debug testing
■ UART
   – Two fully programmable 16C550-type UARTs
   – Separate 16x8 transmit (TX) and 16x12 receive (RX) FIFOs to reduce CPU interrupt service loading
   – Programmable baud-rate generator with fractional divider
   – Programmable FIFO length, including 1-byte deep operation providing conventional double-buffered interface
   – FIFO trigger levels of 1/8, 1/4, 1/2, 3/4, and 7/8
   – Standard asynchronous communication bits for start, stop, and parity
   – False-start-bit detection
   – Line-break generation and detection
■ ADC
   – Single- and differential-input configurations
   – Eight 10-bit channels (inputs) when used as single-ended inputs
   – Sample rate of 500 thousand samples/second
   – Flexible, configurable analog-to-digital conversion
   – Four programmable sample conversion sequences from one to eight entries long, with corresponding conversion result FIFOs
   – Each sequence triggered by software or internal event (timers, analog comparators, or GPIO)
   – On-chip temperature sensor
■ Analog Comparators
   – One integrated analog comparator
   – Configurable for output to: drive an output pin, generate an interrupt, or initiate an ADC sample sequence
   – Compare external pin input to external pin input or to internal programmable voltage reference
■ I2C
   – Master and slave receive and transmit operation with transmission speed up to 100 Kbps in Standard mode and 400 Kbps in Fast mode
   – Interrupt generation
   – Master with arbitration and clock synchronization, multimaster support, and 7-bit addressing mode
■ GPIOs
   – 5-28 GPIOs, depending on configuration
   – 5-V-tolerant input/outputs
   – Programmable interrupt generation as either edge-triggered or level-sensitive
   – Bit masking in both read and write operations through address lines
   – Can initiate an ADC sample sequence
   – Programmable control for GPIO pad configuration:
      • Weak pull-up or pull-down resistors
      • 2-mA, 4-mA, and 8-mA pad drive
      • Slew rate control for the 8-mA drive
      • Open drain enables
      • Digital input enables
■ Power
   – On-chip Low Drop-Out (LDO) voltage regulator, with programmable output user-adjustable from 2.25 V to 2.75 V
   – Low-power options on controller: Sleep and Deep-sleep modes
   – Low-power options for peripherals: software controls shutdown of individual peripherals
   – User-enabled LDO unregulated voltage detection and automatic reset
   – 3.3-V supply brown-out detection and reporting via interrupt or reset
■ Flexible Reset Sources
   – Power-on reset (POR)
   – Reset pin assertion
   – Brown-out (BOR) detector alerts to system power drops
   – Software reset
   – Watchdog timer reset
   – Internal low drop-out (LDO) regulator output goes unregulated
■ Additional Features
   – Six reset sources
   – Programmable clock source control
   – Clock gating to individual peripherals for power savings
   – IEEE 1149.1-1990 compliant Test Access Port (TAP) controller
   – Debug access via JTAG and Serial Wire interfaces
   – Full JTAG boundary scan
■ Industrial-range 48-pin RoHS-compliant LQFP package

Target Applications
■ Factory automation and control
■ Industrial control power devices
■ Building and home automation
■ Stepper motors
■ Brushless DC motors
■ AC induction motors

 

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Part Name(s) : LM3S101 LM3S101-CRN20-XNPP LM3S101-CRN20-XNPR LM3S101-CRN20-XNPT LM3S101-IRN20-XNPP LM3S101-IRN20-XNPR LM3S101-IRN20-XNPT ETC1
Unspecified
Description : Microcontroller

[Luminary Micro, Inc.]

Architectural Overview
The Luminary Micro Stellaris™ family of microcontrollers—the first ARM® Cortex™-M3 based controllers—brings high-performance 32-bit computing to cost-sensitive embedded microcontroller applications. These pioneering parts deliver customers 32-bit performance at a cost equivalent to legacy 8- and 16-bit devices, all in a package with a small footprint.

Product Features
The LM3S101 microcontroller includes the following product features:
■ 32-Bit RISC Performance
   – 32-bit ARM® Cortex™-M3 v7M architecture optimized for small-footprint embedded applications
   – Thumb®-compatible Thumb-2-only instruction set processor core for high code density
   – 20-MHz operation
   – Hardware-division and single-cycle-multiplication
   – Integrated Nested Vectored Interrupt Controller (NVIC) providing deterministic interrupt handling
   – 14 interrupts with eight priority levels
   – Unaligned data access, enabling data to be efficiently packed into memory
   – Atomic bit manipulation (bit-banding) delivers maximum memory utilization and streamlined peripheral control
■ Internal Memory
   – 8 KB single-cycle flash
      • User-managed flash block protection on a 2-KB block basis
      • User-managed flash data programming
      • User-defined and managed flash-protection block
   – 2 KB single-cycle SRAM
■ General-Purpose Timers
   – Two timers, each of which can be configured as a single 32-bit timer or as two 16-bit timers
   – 32-bit Timer modes:
      • Programmable one-shot timer
      • Programmable periodic timer
      • Real-Time Clock when using an external 32-KHz clock as the input
      • User-enabled stalling in periodic and one-shot mode when the controller asserts the CPU Halt flag during debug
   – 16-bit Timer modes:
      • General-purpose timer function with an 8-bit prescaler
      • Programmable one-shot timer
      • Programmable periodic timer
      • User-enabled stalling when the controller asserts CPU Halt flag during debug
   – 16-bit Input Capture modes:
      • Input edge count capture
      • Input edge time capture
   – 16-bit PWM mode:
      • Simple PWM mode with software-programmable output inversion of the PWM signal
■ ARM FiRM-compliant Watchdog Timer
   – 32-bit down counter with a programmable load register
   – Separate watchdog clock with an enable
   – Programmable interrupt generation logic with interrupt masking
   – Lock register protection from runaway software
   – Reset generation logic with an enable/disable
   – ARM PrimeCell®-compliant peripheral and cell identification registers
   – User-enabled stalling when the controller asserts the CPU Halt flag during debug
■ Synchronous Serial Interface (SSI)
   – Master or slave operation
   – Programmable clock bit rate and prescale
   – Separate transmit and receive FIFOs, 16 bits wide, 8 locations deep
   – Programmable interface operation for Freescale SPI, National Semiconductor MICROWIRE™, or Texas Instruments synchronous serial interfaces
   – Programmable data frame size from 4 to 16 bits
   – Internal loopback test mode for diagnostic/debug testing
■ UART
   – Fully programmable 16C550-type UART
   – Separate 16x8 transmit (TX) and 16x12 receive (RX) FIFOs to reduce CPU interrupt service loading
   – Programmable baud-rate generator with fractional divider
   – Programmable FIFO length, including 1-byte deep operation providing conventional double-buffered interface
   – FIFO trigger levels of 1/8, 1/4, 1/2, 3/4 and 7/8
   – Standard asynchronous communication bits for start, stop and parity
   – False start bit detection
   – Line-break generation and detection
■ Analog Comparators
   – Two independent integrated analog comparators
   – Configurable for output to drive an output pin or generate an interrupt
   – Compare external pin input to external pin input or to internal programmable voltage reference
■ GPIOs
   – 2 to 18 GPIOs, depending on configuration
   – Programmable interrupt generation as either edge-triggered or level-sensitive
   – Bit masking in both read and write operations through address lines
   – Programmable control for GPIO pad configuration:
      • Weak pull-up or pull-down resistors
      • 2-mA, 4-mA, and 8-mA pad drive
      • Slew rate control for the 8-mA drive
      • Open drain enables
      • Digital input enables
■ Power
   – On-chip Linear Drop-Out (LDO) voltage regulator, with programmable output user adjustable from 2.25 V to 2.75 V
   – Low-power options on controller: Sleep and Deep-sleep modes
   – Low-power options for peripherals: software controls shutdown of individual peripherals
   – User-enabled LDO unregulated voltage detection and automatic reset
   – 3.3-V supply brownout detection and reporting via interrupt or reset
■ Flexible Reset Sources
   – Power-on reset (POR)
   – Reset pin assertion
   – Brown-out (BOR) detector alerts to system power drops
   – Software reset
   – Watchdog timer reset
   – Internal linear drop-out (LDO) regulator output goes unregulated
■ Additional Features
   – Six reset sources
   – Programmable clock source control
   – Clock gating to individual peripherals for power savings
   – IEEE 1149.1-1990 compliant Test Access Port (TAP) controller
   – Debug access via JTAG and Serial Wire interfaces
   – Full JTAG boundary scan
■ Package
   – 28-pin RoHS-compliant SOIC
   – Commercial and industrial operating temperatures

Target Applications
■ Factory automation and control
■ Industrial control power devices
■ Building and home automation

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Part Name(s) : RT9259 RT9259GA RT9259GQV RT9259GS RT9259PA RT9259PQV RT9259PS Richtek
Richtek Technology
Description : 12V Synchronous Buck PWM DC-DC and Linear Power Controller

General Description
The RT9259 is a dual-channel DC/DC controller specifically designed to deliver high quality power where 12V power source is available. This part consists of a synchronous buck controller and an LDO controller. The synchronous buck controller integrates MOSFET drivers that support 12V+12V bootstrapped voltage for high efficiency power conversion. The bootstrap diode is built-in to simplify the circuit design and minimize external part count. The LDO controller drives an external N-MOSFET for lower power requirement.

Features
Single 12V Bias Supply
Support Dual Channel Power Conversion
  One Synchronous Rectified Buck PWM Controller
  One Linear Controller
Both Controllers Drive Low Cost N-MOSFETs
Adjustable Frequency from 150kHz to 1MHz and Free-Run Frequency at 230kHz
Small External Component Count
Output Voltage Regulation
  PWM Controller : ±1% Accuracy
  LDO Controller : ±2% Accuracy
Two Internal VREFPower Support Lower to 0.8V
Adjustable External Compensation
Linear Controller Drives N-MOSFET Pass Transistor
Fully-Adjustable Outputs
Under Voltage Protection for Both Outputs
Over Current Fault Monitor on MOSFET; No Current Sense Resistor is Required.
RoHS Compliant and 100% Lead (Pb)-Free

Applications
Graphic Card GPU, Memory Core Power
Graphic Card Interface Power
Motherboard, Desktop and Servers Chipset and Memory  Core Power
IA Equipments
Telecomm Equipments
High Power DC-DC Regulators

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Part Name(s) : RT9259C RT9259CGA RT9259CGQV RT9259CGS RT9259CPA RT9259CPQV RT9259CPS Richtek
Richtek Technology
Description : 12V Synchronous Buck PWM DC-DC and Linear Power Controller

General Description
The RT9259C is a dual-channel DC/DC controller specifically designed to deliver high quality power where 12V power source is available. This part consists of a synchronous buck controller and an LDO controller. The
synchronous buck controller integrates MOSFET drivers that support 12V+12V bootstrapped voltage for high
efficiency power conversion. The bootstrap diode is builtin to simplify the circuit design and minimize external part count. The LDO controller drives an external N-MOSFET for lower power requirement.

Features
Single 12V Bias Supply
Support Dual Channel Power Conversion
  One Synchronous Rectified Buck PWM Controller
  One Linear Controller
Both Controllers Drive Low Cost N-MOSFETs
Adjustable Frequency from 150kHz to 1MHz and Free-Run Frequency at 230kHz
Small External Component Count
±1% High Accuracy Output Voltage Regulation for Both PWM and LDO Controller
Two Internal VREFPower Support Lower to 0.8V
Adjustable External Compensation
Linear Controller Drives N-MOSFET Pass Transistor
Fully-Adjustable Outputs
Under Voltage Protection for Both Outputs
Over Current Fault Monitor on MOSFET; No Current Sense Resistor is Required.
RoHS Compliant and 100% Lead (Pb)-Free

Applications
Graphic Card GPU, Memory Core Power
Graphic Card Interface Power
Motherboard, Desktop and Servers Chipset and Memory Core Power
IA Equipments
Telecomm Equipments
High Power DC-DC Regulators

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Part Name(s) : APW7075 APW7075KA APW7075O APW7075KAC-TU APW7075KAC-TUL APW7075KAC-TR APW7075KAC-TRL APW7075OC-TU APW7075OC-TUL APW7075OC-TR APW7075OC-TRL Anpec
Anpec Electronics
Description : Step-Up Converter and LDO Combo

General Description
The APW7075 is a PWM/PFM, high-efficiency and step-upDC-DC converter with an integrated LDO input switch for dual mode application. During battery mode operation, the APW7075 acts as synchronous rectifier and step-up DC-DC converter with a fixed or adjustable output voltage. When the VIN pin sense 5V input voltage, the APW7075 is switched to LDO operation mode, maintainingthe constant output voltage.
The input voltage ranges from 0.6 V to 4.5V for step up DC-DC converter. The start-up is guaranteed at1V and the device is operating down to 0.6V. When the device is at LDO operating mode, the suitable output voltage 3.3V and loading current 500mA for maximum power consumption are guaranteed.
The APW7075 is suited for dual mode and portable battery powered appliance with low-battery detector. In dual-mode applications, theAPW7075 draws power from any available 5V USB connection and reverts to battery power when the USB power is removed.

Features
• Built-In a 500mA LDO and Synchronous Step-Up DC-DCConverter
• Built-In PWM/PFM Operating Mode
• Provided Dual Input Power Sources
• Connect FB to OUT for 3.3V Output Voltage or GND for 2.5V Output Voltage or an External Resistor Divider for Adjustable Output Voltage.
• Fixed 300KHz Operating Frequency
• High Efficiency Up to 94% at 200mA Output Current
• 0.6V to 4.5V Operating Voltage
• 1V Start Up Input Voltage
• Low Battery Voltage Detection
• Reverse Voltage Protection
• Internal Synchronous Rectifier
• Automatic Detection Input Voltage
• Compact SOP-8-P and TSSOP-8 Packages
• Lead Free Available (RoHS Compliant)

Applications
• Dual Mode Power System
• USB Peripheral
• Camcorders andDigital Camera
• Hand-held Instrument
• PDAs

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Part Name(s) : APU3046 APU3046O A-POWER
Advanced Power Electronics Corp
Description : DUAL SYNCHRONOUS PWM CONTROLLER WITH CURRENT SHARING CIRCUITRY AND LDO CONTROLLER

DESCRIPTION
The APU3046 IC combines a Dual synchronous Buck controller and a linear regulator controller, providing a cost-effective, high performance and flexible solution for multi-output applications. The Dual synchronous controller can be configured as 2-independent or 2-phase controller. In 2-phase configuration, the APU3046 provides a programmable current sharing which is ideal when the output power exceeds any single input power budget.
   
FEATURES
■ Dual Synchronous Controller in 24-Pin Package
    with 1808 out-of-phase operation
LDO Controller with Independent Bias Supply
■ Can be configured as 2-Independent or 2-Phase
    PWM Controller
■ Programmable Current Sharing in 2-Phase Configuration
■ Flexible, Same or Separate Supply Operation
■ Operation from 4V to 25V Input
■ Programmable Switching Frequency up to 400KHz
■ Soft-Start controls all outputs
■ Precision Reference Voltage Available
■ 500mA Peak Output Drive Capability
■ Short Circuit Protection for all outputs
■ Power Good Output
■ Synchronizable with External Clock
■ RoHS Compliant
   
APPLICATIONS
■ Dual-Phase Power Supply
■ DDR Memory Source Sink Vtt Application
■ Graphic Card
■ Hard Disk Drive
■ Power supplies requiring multiple outputs
   

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Part Name(s) : TPS2140 TPS2140IPWP TPS2140IPWPR TPS2141 TPS2141IPWP TPS2141IPWPG4 TPS2141IPWPR TPS2141IPWPRG4 TPS2150 TPS2150IPWP TPS2150IPWPG4 TPS2150IPWPR TPS2151 TPS2151IPWP TPS2151IPWPG4 TPS2151IPWPR TPS2151IPWPRG4 TI
Texas Instruments
Description : ADJUSTABLE LDO AND SWITCH WITH DUAL CURRENT LIMIT FOR USB HIGH-POWER PERIPHERAL POWER MANAGEMENT

DESCRIPTION
The TPS2140/41/50/51 is a USB 1.0 and 2.0 Specification-compatible IC containing a dual-current limiting power switch and an adjustable low dropout regulator (LDO). Both the switch and LDO limit inrush current by controlling the turnon slew rate. The unique dual-current-limiting feature of the switch allows USB peripherals to utilize high-value capacitance at the output of the switch, while keeping the inrush current low. During turnon, the switch limits the current delivered to the capacitive load to less than 100 mA.

FEATURES
Complete Power Management Solution for USB High-Power Peripherals
250 mA Low-Dropout Regulator (LDO) With Enable and 325 mA (Typ) Current Limit
LDO Supports 2.7V to 5.5V VIN and 0.9V to 3.3V Adjustable VOUT
40 mΩ(Typ) High-Side MOSFET With Dual Current Limit
Undervoltage Lockout and Power Good for LDO and Switch
CMOS- and TTL-Compatible Enable Inputs
85 µA (Typ) Supply Current
5 µA (Typ) Standby Supply Current
Available in 14-Pin HTSSOP (PowerPAD™)
–40°C to 85°C Ambient Temperature Range
Alternative to TPS2148/58 3.3-V LDO With 3.3-V Switch and 5-V Switch

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Part Name(s) : LTC4063 LTC4063EDD LTC4063EDDTR LTC4063EDDPBF LTC4063EDDTRPBF LTC4063EDD-TR LTC4063EDD-PBF LTC4063EDD-TRPBF Linear
Linear Technology
Description : Standalone Linear Li-Ion Charger with Micropower Low Dropout Linear Regulator

DESCRIPTION
The LTC®4063 is a standalone linear charger for single cell lithium-ion batteries with an adjustable low dropout linear regulator (LDO). The adjustable LDO regulates an output voltage between 1.2V to 4.2V at up to 100mA load current. When the input supply (wall adapter or USB supply) is removed, the LDO regulates the output voltage without interruption. The battery charger and LDO regulator can be enabled individually.
No external sense resistor or external blocking diode is required for charging due to the internal MOSFET architecture. Internal thermal feedback regulates the charge current to maintain a constant die temperature during high power operation or high ambient temperature conditions. The float voltage is fixed at 4.2V and the charge current is programmed with an external resistor. Charge termination methods include minimum charge current or maximum time. With power applied, the LTC4063 can be put into shutdown mode to reduce the supply current to 35µA and the battery drain current to less than 2µA.
Other features include smart recharge, undervoltage lock out, LDO current limiting and a charge status pin to indicate when the charge cycle has completed.

FEATURES
■ Charge Current Programmable up to 1A
■ Integrated 100mA Adjustable Low Dropout Linear Regulator
■ Charges Single Cell Li-Ion Batteries Directly from USB Port
■ Preset Charge Voltage with ±0.35% Accuracy
■ No External MOSFET, Sense Resistor or Blocking Diode Needed
■ Thermal Regulation Maximizes Charge Rate Without Risk of Overheating*
■ Adjustable LDO Output Voltage Range: 1.2V to 4.2V
■ Programmable Charge Termination Timer
■ Programmable Charge Current Detection/Termination
■ SmartStartTM Prolongs Battery Life
■ Charge Status Output
■ 35µA Charger Quiescent Current in Shutdown
■ 15µA LDO Quiescent Current
■ Available in a Low Profile (0.75mm) 10-Lead (3mm × 3mm) DFN Package

APPLICATIONS
■ Handheld Computers
■ Portable MP3 Players
■ Digital Cameras

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