BQ27532-G1 Texas instruments

BQ27532-G1

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BQ27532-G1

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Описание

The bq27532-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 fuel gauge requires little system microcontroller firmware development. Together with bq2425x single-cell switch-mode charger, the fuel gauge manages an embedded battery (non-removable) or a removable battery pack. The fuel gauge uses the patented Impedance Track algorithm for fuel gauging, and provides information, such as remaining battery capacity (mAh), state-of-charge (%), runtime-to-empty (minimum), battery voltage (mV), temperature (°C), and SoH (%). Battery fuel gauging with the device requires only PACK+ (P+), PACK– (P–), and thermistor (T) connections to a removable battery pack or embedded battery circuit. The 15-pin NanoFree™ (CSP) package has dimensions of 2.61 mm × 1.96 mm with 0.5-mm lead pitch. It is ideal for space-constrained applications.

Battery Fuel Gauge and Charger Controller for 1-
Cell Li-Ion Applications up to 14,500-mAh
Capacity
Resides on System Main Board
Battery Fuel Gauge Based on Patented
Impedance Track™ Technology
- Models the Battery Discharge Curve for
  Accurate Remaining Capacity Predictions
- Automatically Adjusts for Battery Aging,
  Battery Self-Discharge, and Temperature and
  Rate Inefficiencies
- Low-value Sense Resistor (5 to 20 mΩ)
Battery Charger Controller With Customizable
Charge Profiles
- Configurable Charge Voltage and Current
  Based on Temperature
- Optional State-of-Health (SoH) and Multi-Level
  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
Runtime Improvements
- Longer Battery Runtime Leveraging
  Impedance Track™ Technology
- Tighter Accuracy Controls for Charger
  Termination
- Improved Recharge Thresholds
Intelligent Charging – Customized and Adaptive
Charging Profiles
- Charger Control Based on SoH
- Temperature Level Charging (TLC)
Stand-alone Battery Charger Controller for
bq2425x Single-Cell Switch-mode Battery Charger
400-kHz I²C Interface for Connection to System
Microcontroller Port

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