BQ2947

활성

정확한 셀 대 셀 전압 모니터링을 위한 리튬 이온 보호

지금 주문

데이터 시트

document-pdfAcrobat BQ2947 Overvoltage Protection for 2-Series to 4-Series Cell Li-Ion Batteries with External Delay Capacitor datasheet (Rev. J) (영어) PDF | HTML

BQ2947

활성

데이터 시트

지금 주문

제품 상세 정보

Function

Protection

Number of series cells (min)

2, 3, 4

Number of series cells (max)

3, 4

Features

External delay capacitor, Single pin output drive

Operating current (typ) (µA)

Rating

Catalog

Vin (max) (V)

Overvoltage protection

4.125, 4.22, 4.225, 4.25, 4.3, 4.325, 4.35, 4.4, 4.45, 4.5, 4.55, 4.6

Operating temperature range (°C)

-40 to 110

Battery overvoltage protection (min) (V)

3.85

Battery overvoltage protection (max) (V)

4.6

Function

Protection

Number of series cells (min)

2, 3, 4

Number of series cells (max)

3, 4

Features

External delay capacitor, Single pin output drive

Operating current (typ) (µA)

Rating

Catalog

Vin (max) (V)

Overvoltage protection

4.125, 4.22, 4.225, 4.25, 4.3, 4.325, 4.35, 4.4, 4.45, 4.5, 4.55, 4.6

Operating temperature range (°C)

-40 to 110

Battery overvoltage protection (min) (V)

3.85

Battery overvoltage protection (max) (V)

4.6

WSON (DSG)

4 mm² 2 x 2

2-, 3-, and 4-series cell overvoltage protection
External capacitor-programmed delay timer
Factory programmed OVP threshold (threshold range 3.85 V to 4.6 V)
Output options: active high or open drain active low
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
- 8-pin WSON (2.00 mm x 2.00 mm)

2-, 3-, and 4-series cell overvoltage protection
External capacitor-programmed delay timer
Factory programmed OVP threshold (threshold range 3.85 V to 4.6 V)
Output options: active high or open drain active low
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
- 8-pin WSON (2.00 mm x 2.00 mm)

The BQ2947 family is an overvoltage monitor and protector for Li-Ion battery pack systems. Each cell is monitored independently for an overvoltage condition.

In the BQ2947 device, an external delay timer is initiated upon detection of an overvoltage condition on any cell. Upon expiration of the delay timer, the output is triggered into its active state (either high or low, depending on the configuration). The external delay timer feature also includes the ability to detect an open or shorted delay capacitor on the CD pin, which will similarly trigger the output driver in an overvoltage condition.

For quicker production-line testing, the BQ2947 device provides a Customer Test Mode with 67 reduced delay time.

The BQ2947 family is an overvoltage monitor and protector for Li-Ion battery pack systems. Each cell is monitored independently for an overvoltage condition.

For quicker production-line testing, the BQ2947 device provides a Customer Test Mode with 67 reduced delay time.

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	유형	직함		날짜
*	Data sheet	BQ2947 Overvoltage Protection for 2-Series to 4-Series Cell Li-Ion Batteries with External Delay Capacitor datasheet (Rev. J)	PDF \| HTML	0202/05/19

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