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
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 : 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 : 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 : BQ2050H Li-Ion Power Gauge™ Demonstration Module
The DM2050H Power Gauge Module is a complete and compact example solution for capacity monitoring of Li-Ion battery packs. The DM2050H incorporates a bq2050H Gas Gauge IC, a 0.03Ωcurrent sense resistor, and all other components necessary to accurately monitor and display the capacity of 3 series cells.
Complete bq2050H Power Gauge solution for Li-Ion battery packs
Battery information available over a single-wire (HDQ) bidirectional serial port
Control signals to enhance pack protection
Battery state-of-charge monitoring for 2-, 3-, and 4-cell series applications
On-board regulator allows direct connection to the battery
Includes push-button activated LEDs to display state-of-charge information
Compact size for battery pack integration