See datasheet for actual packaging/pinout drawings

Package | PIN:

PW | 24

Temp:

I (-40 to 85)

ECO Plan:

TBD

TI Store Price:

Qty.Price
1 - 9 $ 2.72
10 - 24 $ 2.44
25 - 99 $ 2.27
100 - 249 $ 1.97
250 - 499 $ 1.82
500 - 749 $ 1.53
750 - 999 $ 1.26
1000 - 9999 $ 1.15
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PBQ7791500PWT-3-Series to 5-Series Stackable Ultra-Low-Power Primary Protector With Autonomous Cell Balancing

The bq77915 device is a low-power battery pack protector that implements a suite of voltage, current, and temperature protections and a smart cell balancing algorithm without microcontroller (MCU) control. The device’s stackable interface provides simple scaling to support battery cell applications from 3 series to 20 series or more. Protection thresholds and delays are factory-programmed and available in a variety of configurations. Separate overtemperature and undertemperature thresholds for discharge (OTD and UTD) and charge (OTC and UTC) are provided for added flexibility.

The device achieves pack protection via the integrated independent CHG and DSG low-side NMOS FET drivers, which may be disabled through two control pins. These control pins may also be used to achieve cell protection solutions for higher series (6 series and beyond) in a simple and economical manner. To do this, simply cascade a higher device CHG and DSG outputs to the immediate lower device control pins. For added flexibility, discharge overcurrent protection delays can be programmed using a resistor connected from the OCDP pin to VSS.

The bq77915 protector achieves a smart passive cell-balancing algorithm via integrated FETs for cell balancing currents up to 50 mA. For higher cell-balancing current requirements, external FETs can be connected. A HIBERNATE mode intended for shipping and storage of the battery packs enables ultra-low power operation.

The bq77915 protector is intended for battery packs where no host monitoring is required.

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