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Product details

Parameters

Function Charger Front-End Protection Number of series cells (Min) 1 Number of series cells (Max) 1 Features Over-voltage (OV), , Overcurrent protection (OCP), , Short-circuit Discharge (SCD) Typical operating current (Typ) (uA) 250 Rating Catalog Vin (Max) (V) 30 open-in-new Find other Battery protectors

Package | Pins | Size

WSON (DSG) 8 4 mm² 2 x 2 open-in-new Find other Battery protectors

Features

  • Input Overvoltage Protection
  • Accurate Battery Overvoltage Protection
  • Output Short-Circuit Protection
  • Soft-Start to Prevent Inrush Currents
  • Soft-Stop to Prevent Voltage Spikes
  • Maximum Input Voltage of 30 V
  • Supports up to 1.7-A Load Current
  • Thermal Shutdown
  • Enable Function
  • Fault Status Indication
  • Small 2 mm × 2 mm 8-Pin WSON Package
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Description

The bq2438x family of devices are charger front-end integrated circuits (ICs) designed to provide protection to Li-ion batteries from failures of the charging circuit. The device continuously monitors the input voltage and battery voltage. The device operates like a linear regulator, maintaining a 5.5-V (bq24380) or 5-V (bq24381, bq24382) output with input voltages up to the Input overvoltage threshold. During input overvoltage conditions, the device immediately turns off the internal pass FET disconnecting the charging circuit from the damaging input source. Additionally, if the battery voltage rises to unsafe levels while charging, power is removed from the system. The device checks for short-circuit or overload conditions at its output when turning the pass FET on, and if it finds unsafe conditions, it switches off and then rechecks the conditions. Additionally, the device also monitors its die temperature and switches off if it exceeds 140°C.

When the device is controlled by a processor, the device provides status information about fault conditions to the host.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet bq2438x Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC With LDO Mode datasheet (Rev. C) Aug. 28, 2015
User guide bq2430x/1x DSG EVM (HPA245) for Li+ Charger Front End Protection IC (Rev. B) Nov. 04, 2016

Design & development

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CAD/CAE symbols

Package Pins Download
WSON (DSG) 8 View options

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