BQ27750 Datasheet, PDF (1/34 Pages) Texas Instruments – Impedance Track Battery Gas Gauge and Protection Solution for 1-Series Cell Li-Ion Battery Packs

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bq27750
SLUSCM7 – JUNE 2017
bq27750 Impedance Track™ Battery Gas Gauge and Protection Solution
for 1-Series Cell Li-Ion Battery Packs
1 Features
•1 High-Side Protection N-CH FET Drive Allows
Serial Bus Communication During Fault
Conditions
• Programmable Protection Levels for Voltage,
Current, and Temperature
• Analog Front End with Two Independent ADCs
– Support for Simultaneous Current and Voltage
Sampling
– High-Accuracy Coulomb Counter with Input
Offset Error < 1 µV (Typical)
• Supports Down to 1-mΩ Current Sense Resistor
While Capable of 1-mA Current Measurement
• SHA-1 Authentication Responder for Increased
Battery Pack Security
• 400-kHz I²C™ Bus Communications Interface for
High-Speed Programming and Data Access
• Compact 12-Pin VSON Package (DRZ)
2 Applications
• Tablet Computing
• Portable and Wearable Health Devices
• Portable Audio Devices
• High-Charge Current Applications (> 5 A)
3 Description
The Texas Instruments bq27750 Impedance Track™
Gas Gauge and Protection Solution is a highly
integrated, accurate 1-series cell gas gauge and
protection solution.
The bq27750 device provides a fully integrated pack-
based solution with a flash programmable custom
reduced instruction-set CPU (RISC), safety
protection, and authentication for 1-series cell Li-Ion
and Li-Polymer battery packs.
The bq27750 gas gauge communicates via an I²C-
compatible interface and combines an ultra-low-
power, high-speed TI bqBMP processor, high-
accuracy analog measurement capabilities, integrated
flash memory, an array of peripheral and
communication ports, an N-CH FET drive, and a
SHA-1 Authentication transform responder into a
complete, high-performance battery management
solution.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
bq27750
VSON (12)
4 mm × 2.5 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Pack +
Simplified Schematic
10 MΩ
10 MΩ
I2C
Comms
100 Ω 100 Ω
100 Ω
100 Ω
1 VSS
2 SRN
3 SRP
4 TS1
5 SCL
6 ^SDA
10 kΩ NTC
13
PWPD
10 Ω
VCELL
/INT
12
BAT 11
PBI 10
CHG 9
PACK 8
DSG 7
0.1 µF
2.2 µF
100 Ω
0.1 µF
100 Ω
Pack–
1 to 10 mΩ
1
Copyright © 2017, Texas Instruments Incorporated
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.