BQ27Z561YPHR-R1 Texas Instruments MCU

BQ27Z561YPHR-R1 Overview

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Description

The Texas Instruments BQ27Z561-R1 Impedance Track? gasgauge solution is a highly integrated, accurate 1-series cell gas gauge with a flash programmablecustom reduced instruction-set CPU (RISC) and SHA-256 authentication for Li-Ion and Li-Polymerbattery packs. The 1-series cell capability includes parallel cells for increasedcapacity.

The BQ27Z561-R1 gas gauge communicates via I2C-compatible andHDQ one-wire interfaces and includes several key features that can help facilitate accurate gasgauging applications. Integrated temperature sense functions (internal and external options) enablesystem and battery temperature measurements.

The integrated SHA-256 functionality helps enable secure identification between systemsand packs. The interrupt and BTP functions facilitate the BQ27Z561-R1 device to inform the systemwhen a specific state-of-charge (SOC), voltage, or temperature condition occurs. The low-voltageoperation enables the system to continue monitoring the battery even in deeply dischargedconditions. During low-activity situations, the device can be set to the low power coulomb counting(CC) mode, which enables the device to continue its coulomb counting while reducing operatingcurrent significantly.

Features

Supports current sense resistors down to 1 mΩ
Supportspack-side gauging including enhanced state of health (SOH) algorithm
Fast QMAXupdate option based on predicted OCV
SHA-256 authentication responder forincreased battery pack security
Sophisticated charge algorithms:
- JEITA
- Enhancedcharging
- RSOC chargingcompensation 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 > 5A)
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 OFF mode: < 1.9 μA
Internal and external temperaturesense functions
Diagnostic lifetime data monitor and blackbox recorder
400-kHz I2C buscommunications interface for high-speed programming and data access
HDQ one-wire for communication with host
Compact 12-pinDSBGA package (YPH)