Packaging information
| Package | Pins DSBGA (YZF) | 15 |
| Operating temperature range (°C) -40 to 85 |
| Package qty | Carrier 250 | SMALL T&R |
Features for the BQ27531-G1
- Battery Fuel Gauge and Charger Controller for 1-
Cell Li-Ion Applications - Resides on System Main Board
- Battery Fuel Gauge Based on Patented
Impedance Track™ Technology- Models the 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)
- Models the Battery Discharge Curve for
- Battery Charger Controller With Customizable
Charge Profiles- Configurable Charge Voltage and Current
Based on Temperature - Optional State of Health (SoH) and Multilevel-
Based Charge Profiles
- Configurable Charge Voltage and Current
- Host-Free Autonomous Battery Management
System- Reduced Software Overhead Allows for Easy
Portability Across Platforms and Shorter OEM
Design Cycles - Higher Safety and Security
- Reduced Software Overhead Allows for Easy
- Intelligent Charging\x97Customized and Adaptive
Charging Profiles- Charger Control Based on SoH
- Temperature Level Charging (TLC)
- Battery Charger Controller for bq2419x Single-Cell
Switched-Mode Battery Charger- Stand-Alone Charging Solution
- SHIP Mode Capability
- 400-kHz I2C Interface for Connection to System
Microcontroller Port - In a 15-Pin NanoFree™ Packaging
Description for the BQ27531-G1
The Texas Instruments bq27531-G1 system-side Li- Ion Battery Management Unit is a microcontroller peripheral that provides Impedance Track fuel gauging and charging control for single-cell Li-Ion battery packs. The device requires little system microcontroller firmware development. Together with the bq2419x Single-Cell Switched-Mode Charger, the bq27531-G1 manages an embedded battery (nonremovable) or a removable battery pack.
The bq27531-G1 uses the patented Impedance Track algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-ofcharge (%), run time to empty (minimum), battery voltage (mV), temperature (°C), and state of health (%).
Battery fuel gauging with the bq27531-G1 requires only PACK+ (P+), PACK– (P–), and Thermistor (T) connections to a removable battery pack or embedded battery circuit. The CSP option is a 15-pin package in the dimensions of 2.61 mm × 1.96 mm with a 0.5-mm lead pitch, which is ideal for spaceconstrained applications.