BQ294524 Texas instruments

BQ294524

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BQ294524

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Описание

The BQ2945xy family of products is a secondary-level voltage monitor and protector for Li-ion battery pack systems. Each cell is monitored independently for an overvoltage condition. Based on the configuration, an output is triggered after a fixed delay if any of the two or three cells has an overvoltage condition. This output is triggered into a high state after an overvoltage condition satisfies the specified delay timer.

2-series and 3-series cell overvoltage monitor for secondary protection
Fixed programmable delay timer
Fixed OVP threshold
- Available range from 3.85 V to 4.6 V
Fixed OVP delay option: 4 s or 6.5 s
High-accuracy overvoltage protection: ±10 mV
Low power consumption I_CC ≈ 1 µA (V_CELL(ALL) < V_PROTECT)
Low leakage current per cell input < 100 nA
Small package footprint
- 6-pin SON

Function	Protection
Number of series cells (min)	2, 3
Number of series cells (max)	3
Features	Overvoltage, Single pin output drive
Operating current (typ) (µA)	1
Rating	Catalog
Vin (max) (V)	25
Overvoltage protection	4.45
Operating temperature range (°C)	-40 to 85
Battery overvoltage protection (min) (V)	4.45
Battery overvoltage protection (max) (V)	4.45