BQ24725ARGRR

1-4 Cell Li-Ion Battery SMBus Charge Controller with N-Channel Power MOSFET Selector

describe

The bq24725A is a high-efficiency, synchronous battery charger with low component count for space-constrained multi-compound battery charging applications.

The bq24725A utilizes two charge pumps to drive each of the N-channel MOSFETs (ACFET, RBFET, and BATFET) for automatic system power selection.

The SMBus-controlled input current, charge current, and charge voltage digital-to-analog converters (DACs) have high regulation accuracy that can be easily programmed by the system power management microcontroller.

The bq24725A uses the internal input current register or the external ILIM pin to adjust PWM modulation to reduce charge current.

The bq24725A can charge 1-cell, 2-cell, 3-cell, or 4-cell Li-ion batteries.

characteristic

SMBus host controlled NMOS-NMOS synchronous buck converter with programmable switching frequencies of 615kHz, 750kHz and 885kHz

N-Channel MOSFET Automatically Selects Adapter-Powered or Internal Charge-Pump Driven Battery-Powered System Power

Enhanced safety features for overvoltage protection, overcurrent protection, battery, inductor and MOSFET short circuit protection

Programmable Input Current, Charge Voltage, Charge Current Limits

Charge voltage accuracy up to 19.2V is ±0.5%_

Charge current accuracy up to 8.128A is ±3%_

±3% input current accuracy up to 8.064A_

20x Adapter Current or Charge Current Amplifier Output Accuracy ±2%_

Programmable battery drain threshold, supports battery LEARN function

Programmable adapter detection and indicators

Integrated soft start

Integrated loop compensation

Real-time system control of ILIM pin to limit charge current

AC adapter operates from 4.5V to 24V

5μA off-state battery discharge current

0.65mA (0.8mA max) adapter standby quiescent current

20-Lead 3.5mm x 3.5mm2 Ultra Thin Quad Flat No-Lead (VQFN) Package

TI Texas Instruments original authentic

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The original authentic, the advantage is hot, the market price is determined, and the long-term supply of the real order price is negotiated!

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