The bq24745 is a high-efficiency, synchronous battery charger with an integrated input-current comparator, offering low component count for space-constrained, multi-chemistry battery-charging applications.
Features
1.
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.
Input Current Comparator, With Adjustable Threshold and Hysteresis.
Not Recommended for New Designs (NRND)
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bq24745
SLUS761D – DECEMBER 2007 – REVISED OCTOBER 2011
SMBus-Controlled Multi-Chemistry Battery Charger With Input Current Detect Comparator and Charge Enable Pin
Check for Samples: bq24745
FEATURES
1
• 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 – Input Current Comparator, With Adjustable Threshold and Hysteresis – Internal Soft-Start
• Safety – Dynamic Power Management (DPM)
• Up to 19.
bq24745 Datasheet
