BQ27531-G1 Texas instruments

BQ27531-G1

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BQ27531-G1

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Описание

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.

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)
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
Host-Free Autonomous Battery Management
System
- Reduced Software Overhead Allows for Easy
  Portability Across Platforms and Shorter OEM
  Design Cycles
- Higher Safety and Security
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

Cell chemistry	Li-Ion/Li-Polymer
Number of series cells	Single Cell
Communication interface	I2C
Battery capacity (min) (mAh)	300
Battery capacity (max) (mAh)	8000
Implementation	System
External capacity indication	None
Features	Battery Management Unit, SHA-1 Authentication
Operating temperature range (°C)	-40 to 85
Rating	Catalog