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BQ27546YZFR-G1

Single cell Impedance Track™ pack side fuel gauge with DSBGA package

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

BQ27546YZFR-G1
Datasheet:

BQ27546YZFR-G1 Datasheet (PDF)
Series:

Impedance Track™
Function:

Battery Monitor
Battery Chemistry:

Lithium Ion
Number of Cells:

1
EDA/CAD Models:

Request Free CAD Models for BQ27546YZFR-G1

Email: [email protected]

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Tel: +852 95804164

BQ27546YZFR-G1 General 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 (non-removable).

The bq27546-G1 uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), run-time to empty (min.), battery voltage (mV), 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 SHA-1/HMAC authentication algorithm.

The device comes in a 15-ball Nano-Free™ DSBGA package (2.61 mm × 1.96 mm) that is ideal for space-constrained applications.

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Key Features

Battery Fuel Gauge for 1-Series (1sXp) Li-Ion Applications up to 14,500-mAh 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 Communication with Host System
Small 15-Ball Nano-Free™ (DSBGA) Packaging

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Battery Management	Series	Impedance Track™
Function	Battery Monitor	Battery Chemistry	Lithium Ion
Number of Cells	1	Fault Protection	-
Interface	HDQ, I²C	Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Base Product Number	BQ27546