The bq24751B is a high-efficiency, synchronous battery charger with integrated compensation and system power selector logic, offering low component count for space-constrained multi-chemistry battery charging applications.
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.
Automatic System Power Selection From AC/DC Adapter or Battery.
bq24753A- Host-Controlled Li-Ion and Li-Polymer Battery Charger
bq24702- MULTICHEMISTRY BATTERY CHARGER CONTROLLER AND SYSTEM POWER SELECTOR
bq24703- MULTICHEMISTRY BATTERY CHARGER CONTROLLER AND SYSTEM POWER SELECTOR
Full PDF Text Transcription
Click to expand full text
Not Recommended For New Designs
bq24751B
www.ti.com .......................................................................................................................................................... SLUS835A – JULY 2008 – REVISED MARCH 2009
Host-Controlled Multi-Chemistry Battery Charger with Low Iq and System Power Selector
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.
bq24751B Datasheet
