BQ27Z561-R2 Impedance Track™ Battery Gas Gauge Solution for 1-Series Cell Li-Ion Battery Packs

1 Features

Supports high-side and low-side current sense resistors down to 1 mΩ
Supports pack-side gauging including enhanced state of health (SOH) algorithm
Fast QMax update option based on predicted OCV
SHA-256 authentication responder for increased battery pack security
Sophisticated charge algorithms
- JEITA
- Enhanced charging
- RSOC() charging compensation option
Two independent ADCs
- Support for simultaneous current and voltage sampling
- High-accuracy coulomb counter with input offset error < 1 µV (typical)
Low-voltage (2-V) operation
Wide-range current applications (1 mA to > 5 A)
Active high or low pulse or level interrupt pin
Supports battery trip point (BTP)
Reduced power modes (typical battery pack operating range conditions)
- Typical SLEEP mode: < 11 μA
- Typical DEEP SLEEP mode: < 9 μA
- Typical HIBERNATE mode: < 3 μA
- Typical OFF mode: < 1.9 μA
Internal and external temperature sense functions
Diagnostic lifetime data monitor and black box recorder
400-kHz I²C bus communications interface for high-speed programming and data access
HDQ one-wire for communication with host
Compact 12-pin DSBGA package (YPH)