Texas Instruments bq24704
The bq24704 is a high-efficiency, synchronous battery charger with integrated compensation offering low component count for space-limited Li-Ion and Li-Polymer battery charging applications. The bq24704 charges two, three, or four series Li+ cells, supporting up to 8 A of charge current, and is available in a 24-pin, 4x4-mm thin QFN package. DESCRIPTION (CONTINUED) The bq24704 features Dynamic Power Management (DPM) and input power limiting.| Part No. | bq24704 |
|---|---|
| Datasheet | bq24704 Download |
| Manufacturer |  Texas Instruments |
| Description | Host-Controlled Li-Ion and Li-Polymer Battery Charger |
| Buy | Stock & Price |
FEATURES
1●2 NMOS-NMOS Synchronous Buck Converter with 300 kHz Frequency and >95% Efficiency
● 30-ns Minimum Driver Dead-time and 99.5% Maximum Effective Duty Cycle
● High-Accuracy Voltage and Current Regulation – ±0.5% Charge Voltage Accuracy – ±3% Charge Current Accuracy – ±3% Adapter Current Accuracy – ±2% Input Current Sense Amp Accuracy
● Integration – Internal Loop Compensation – Internal Soft-Start
● Safety – Dynamic Power Management (DPM) with Status Indicator – Charger Overcurrent Protection – Battery Overvoltage Protection – Thermal Shutdown
● Supports Two, Three, or Four Li+ Cells
● 8 – 24 V AC/DC-Adapter Operating Range
● Analog Inputs with Ratiometric Programming via Resistors or DAC/GPIO Host Control – Charge Voltage (4-4.512 V/cell) – Charge Current (up to 8 A, with 10-mΩ Sense Resistor) – Adapter Current Limit (DPM)
● Status and Monitoring Outputs – AC/DC Adapter Present with Programmable Voltage Threshold – DPM Loop Active (DPMDET) – Current Drawn from Input Source
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