BQ27Z558系列介绍资料

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BQ27Z558

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单节电池 Impedance Track™ 技术电池电量监测计和保护解决方案

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The Texas Instruments BQ27Z558 Impedance Track™ gas gauge solution is a highly integrated, accurate 1-series cell gas gauge with a flash programmable custom reduced instruction-set CPU (RISC) and SHA-256 authentication for Li-ion and Li-polymer battery packs. The 1-series cell capability includes parallel cells for increased capacity.

The BQ27Z558 gas gauge communicates through I 2C-compatible and HDQ one-wire interfaces and includes several key features that can help facilitate accurate gas gauging applications. Integrated temperature sense functions (internal and external options) enable system and battery temperature measurements.

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 I 2C bus communications interface, including a 1.2-V logic level for high-speed programming and data access
HDQ one-wire for communication with host
Compact 12-pin DSBGA package (YPH)

Cell chemistry	Li-Ion/Li-Polymer, LiFePO4
Number of series cells	Single Cell
Communication interface	HDQ, I2C
Battery capacity (min) (mAh)	100
Battery capacity (max) (mAh)	32000
Implementation	Pack
External capacity indication	None
Features	Impedance Track™ algorithm, SHA-256 Authentication
Operating temperature range (°C)	-40 to 85
Rating	Catalog

DSBGA (YPH)

2.8896 mm² 2.064 x 1.4

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BQ27Z558

单节电池 Impedance Track™ 技术电池电量监测计和保护解决方案

4000-306-326