bq27546-G1 Datasheet | Texas Instruments

Features - 1 Battery Fuel Gauge for 1-Series (1s Xp) Li-Ion Applications up to 14,500-m Ah Capacity - Microcontroller Peripheral Provides: - Internal or External Temperature Sensor for Battery Temperature Reporting - SHA-1/HMAC Authentication - Lifetime Data Logging - 64 Bytes of Non-Volatile Scratch Pad FLASH - Battery Fuel Gauging Based on Patented Impedance Track™ Technology - Models Battery Discharge Curve for Accurate Time-To-Empty Predictions - Automatically Adjusts for Battery Aging, Battery Self-Discharge, and Temperature/Rate Inefficiencies - Low-Value Sense Resistor (5 mΩ to 20 mΩ) - Advanced Fuel Gauging Features - Internal Short Detection - Tab Disconnection Detection - HDQ and I2C™ Interface Formats for munication with Host System - Small 15-Ball Nano-Free™ (DSBGA) Packaging 2 Applications - Smartphones - Tablets - Digital Still and Video Cameras - Handheld Terminals - MP3 or Multimedia Players 3 Description The bq27546-G1 Li-Ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery packs. The device requires minimal system microcontroller firmware development for accurate battery fuel gauging. The bq27546-G1 resides within the battery pack or on the system’s main-board with an embedded battery (nonremovable). The bq27546-G1 uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (m Ah), state-of-charge (%), run-time to empty (min.), battery voltage (m V), and temperature (°C). It also provides detections for internal short or tab disconnection events. The bq27546-G1 features integrated support for secure battery pack authentication, using the SHA1/HMAC authentication algorithm. The device es in a 15-ball Nano-Free™ DSBGA package (2.61 mm × 1.96 mm) that is ideal for spaceconstrained applications. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) bq27546-G1 YZF (15) 2.61 mm × 1.96 mm (1) For all available packages, see...