BQ76200 High-side n-channel FET driver | TI.com

BQ76200
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High-side n-channel FET driver

 

Description

The bq76200 device is a low-power, high-side, N-channel system. A high-side protection avoids ground disconnection in the system and also allows continuous communication between the battery pack and host system. The device has additional P-Channel FET control to allow low-current pre-charge to a deeply depleted battery, and a PACK+ voltage monitor control for the host to sense the PACK+ voltage.

The independent enable inputs allow CHG and DSG FETs to be turned on and off separately, offering great implementation flexibility in battery systems.

The bq76200 device can be used with a companion analog front end (AFE) device such as the bq76920/30/40 family, a 3-series to 15-series Cell Analog Front End Monitoring, and a host microcontroller or dedicated state-of-charge (SOC) tracking gas gauge device.

Features

  • CHG and DSG high-side NMOS FET drivers for battery protection fast FET turn-on and turn-off times
  • Pre-charge PFET driver (for current-limited pre-charge of significantly depleted cell-pack)
  • Independent digital enable control for charging and discharging
  • Minimal external components needed
  • Scalable external capacitor-based charge pump to accommodate a different range of FETs in parallel
  • High-voltage tolerant (100-V absolute maximum)
  • Internal switch to enable pack-voltage sensing
  • Common and separate charge and discharge path configuration support
  • Designed to work directly with bq76940, bq76930, and bq76920 battery monitors
  • Current consumption:
    • NORMAL mode: 40 µA
    • SHUTDOWN: < 10 µA maximum

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Parametrics

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Part number Order Vin (Max) (V) Number of series cells (Min) Number of series cells (Max) Operating temperature range (C) Rating Package Group Package size: mm2:W x L (PKG)
BQ76200 Order now 75     3     16     -40 to 85     Catalog     TSSOP | 16     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)