Description : Low-Power, Single-/Dual-Level Battery Monitors with Hysteresis and Integrated uP Reset / Low Current (2.5uA typ at 3.6V)
The MAX6439–MAX6442 are a family of ultra-low-power battery monitors with integrated microprocessor (µP) supervisors. The battery monitors are offered with single or dual low-battery output options that can be used to signal when the battery is OK (enabling full system
operation), when the battery is low (for low-power system operation), and when the battery is dead (to disable system operation). These devices also have an independent µP supervisor that monitors VCCand provides an active-low reset output. A manual reset function is available to reset the µP with a push-button. No external components are required.
Description : Single Cell Li-Ion Battery Gas Gauge and Protection
The Texas Instruments bq28550-R1 battery gas gauge provides current and voltage protection, and secure, SHA-1/HMAC authentication for single-cell Li-Ion battery packs. Designed for battery-pack integration, the bq28550-R1 requires host microcontroller firmware support for implementation. A system processor communicates with the bq28550-R1 using a serial interface to obtain remaining battery capacity, system run-time predictions, and other critical battery information.
The DS1336 Afterburner Chip is designed to provide power switching between a primary power supply(VCC) and a backup battery power supply (VBAT). Five VCC and two battery paths are provided which can be used individually or in parallel to supply uninterrupted power in applications such as SRAM networks.
Provides power switching of up to 1.5 amps at voltages between 3.0 and 5.0 volts
Five separate power switches
Selectable battery switches for use with
Very low on impedance of 0.7O
Battery backup current of 4 mA
Diode-isolated battery path
Available in 16-pin DIP or 16-pin SOIC surface
Low voltage drop battery path
Connects directly to a variety of Dallas Semiconductor devices, adding increased switching capability for large battery backup current applications
The ISL88731A is a highly integrated Lithium-ion battery charger controller, programmable over the SMBus system management bus (SMBus). The ISL88731A is intended to be used in a smart battery charger (SBC) within a smart battery system (SBS) that throttles the charge power such that the current from the AC-adapter is automatically limited.
Description : 2-SERIES, 3-SERIES, AND 4-SERIES CELL LITHIUM-ION OR LITHIUM-POLYMER BATTERY PROTECTION AFE
The bq29330 is a 2-series, 3-series, and 4-series cell lithium-ion battery pack full-protection analog front end (AFE) IC that incorporates a 2.5-V, 16-mA and 3.3-V, 25-mA low dropout regulator (LDO). The bq29330 also integrates an I2C-compatible interface to extract battery parameters such as battery voltage, individual cell voltages, and control output status. Other parameters such as current protection thresholds and delays can also be programmed into the bq29330 to increase the flexibility of the battery management system.
Description : System-Side Impedance Track Fuel Gauge With Direct Battery Connection | Gas Gauge Battery
The Texas Instruments bq27425 system-side LiCoO2 battery fuel gauge is an easy to configure microcontroller peripheral that provides fuel gauging for single-cell LiCoO2 battery packs.
The device requires minimal user configurations and system microcontroller firmware development for accurate fuel gauging.
• Battery Fuel Gauge for 1-Series LiCoO2 battery Applications
• Easy to Configure Battery Fuel Gauging Based on Patented Impedance Track™ Technology
– Models Battery Discharge Curve for Accurate State-of-Charge Report
– Automatically Adjusts for Battery Aging, Battery Self-Discharge, and
– Low-Value Integrated Sense Resistor(10 mΩ typical)
• Resides on System Main Board
– Works with Embedded or Removable Battery Packs
– Integrated LDO allows devices to be powered directly from battery pack
• Microcontroller Peripheral Provides:
– Accurate Battery Fuel Gauging
– Internal Temperature Sensor for Battery Temperature Reporting
– Configurable Level of State-of-Charge (SOC) Interrupts
• I2C for Connection to System Microcontroller Port
• Small 15-pin 2,69 × 1,75 mm, 0.5 mm pitch CSP package
Description : MULTICHEMISTRY BATTERY CHARGER CONTROLLER AND SYSTEM POWER SELECTOR
The bq24702/bq24703 is a highly integrated battery charge controller and selector tailored for notebook and sub-notebook PC applications. The bq24702/bq24703 uses dynamic power management (DPM) to minimize battery charge time by maximizing use of available wall-adapter power. This is achieved by dynamically adjusting the battery charge current based on the total system (adapter) current.
Dynamic Power Management, DPM Minimizes Battery Charge Time
Integrated Selector Supports Battery Conditioning and Smart Battery Learn Cycle
Zero Volt Operation
Selector Feedback Circuit Ensures Break-Before-Make Transition
±0.4% Charge Voltage Accuracy, Suitable for Charging Li-Ion Cells
±4% Charge Current Accuracy
300-kHz Integrated PWM Controller for High-Efficiency Buck Regulation
Depleted Battery Detection and Indication to Protect Battery From Over Discharge
20-µA Sleep Mode Current for Low Battery Drain
24-Pin TSSOP Package and 5 mm ×5 mm QFN package (bq24703 only)
Description : SMBus-Controlled Level 2 Multi-Chemistry Battery Charger With Input Current Detect Comparator and Charge Enable Pin
The bq24747 is a high-efficiency, synchronous battery charger with an integrated input-current comparator, offering low component count for space-constrained, multi-chemistry battery-charging applications.