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BQ27541DRZR-BQ27541DRZT
Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration 12-SON -40 to 85
Battery Pack
PACK+
LDO REG25REGIN
Vcc
SRP
BAT
Not Recommended for New Designs Smartphones
23• Battery Fuel Gauge for 1-Series Li-Ion
Applications • PDAs Digital Still and Video Cameras• Microcontroller Peripheral Provides: Handheld Terminals– Accurate Battery Fuel Gauging MP3or Multimedia– Internal Temperature Sensor for System
Temperature Reporting DESCRIPTION– SHA-1/HMAC AuthenticationThe Texas Instruments
– 96 Bytesof Non-Volatile Scratch Pad gaugeisa microcontroller
FLASH fuel gauging for single-cell
• Battery Fuel Gauging Based on Patented device requires little system
Impedance Track™ Technology development for accurate
bq27541 resides within
– Models Battery Discharge Curve forsystem’s main-board
Accurate Time-To-Empty Predictions(nonremovable).
– Automatically Adjusts for Battery Aging,
Battery Self-Discharge, and The bq27541 uses the
algorithm for fuel gauging,
Temperature/Rate Inefficienciessuch as remaining
– Low-Value Sense Resistor(5 mΩto20 mΩ) state-of-charge (%), run-time
• HDQ andI2 C™ Interface Formats for voltage (mV), and temperature
Communication with Host System The bq27541 also features
• Small 12-pin 2,5 mm×4 mm SON Package secure battery pack
SHA-1/HMAC authentication
TYPICAL APPLICATION
