Datasheet Texas Instruments BQ24753 — Ficha de datos

NOT RECOMMENDED FOR NEW DESIGNS bq24753
www.ti.com. SLUS885B – DECEMBER 2008 – REVISED MARCH 2009 Host-Controlled Multi-Chemistry Battery Charger with Low Iq and System Power Selector
FEATURES APPLICATIONS 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
– Internal Loop Compensation
– Internal Soft Start Safety
– Programmable Input Overvoltage
Protection (OVP)
– Dynamic Power Management (DPM)
– Programmable Inrush Adapter Power
(ACOP) and Overcurrent (ACOC) Limits
– Reverse-Conduction Protection Input FET Supports Two, Three, or Four Li+ Cells 5 – 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 10 A, with 10-mΩ
Sense Resistor) …