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bq24703

Texas Instruments
Part Number bq24703
Manufacturer Texas Instruments
Description MULTICHEMISTRY BATTERY CHARGER CONTROLLER AND SYSTEM POWER SELECTOR
Published Jan 10, 2020
Detailed Description www.ti.com Actual Size (6,60 mm x 7,90 mm) bq24702 bq24703 SLUS553E – MAY 2003 – REVISED OCTOBER 2007 MULTICHEMISTRY ...
Datasheet PDF File bq24703 PDF File

bq24703
bq24703

Overview
www.
ti.
com Actual Size (6,60 mm x 7,90 mm) bq24702 bq24703 SLUS553E – MAY 2003 – REVISED OCTOBER 2007 MULTICHEMISTRY BATTERY CHARGER CONTROLLER AND SYSTEM POWER SELECTOR FEATURES 1 • Dynamic Power Management, DPM Minimizes Battery Charge Time • Integrated Selector Supports Battery Conditioning and Smart Battery Learn Cycle • Zero Volt Operation • Selector Feedback Circuit Ensures Break-Before-Make Transition • ±0.
4% Charge Voltage Accuracy, Suitable for Charging Li-Ion Cells • ±4% Charge Current Accuracy • 300-kHz Integrated PWM Controller for High-Efficiency Buck Regulation • Depleted Battery Detection and Indication to Protect Battery From Over Discharge • 20-μA Sleep Mode Current for Low Battery Drain • 24-Pin TSSOP Package and 5 mm × 5 mm QFN package (bq24703 only) DESCRIPTION The bq24702/bq24703 is a highly integrated battery charge controller and selector tailored for notebook and sub-notebook PC applications.
The bq24702/bq24703 uses dynamic power management (DPM) to minimize battery charge time by maximizing use of available wall-adapter power.
This is achieved by dynamically adjusting the battery charge current based on the total system (adapter) current.
The bq24702/bq24703 uses a fixed frequency, pulse width modulator (PWM) to accurately control battery charge current and voltage.
Charge current limits can be programmed from a keyboard controller DAC or by external resistor dividers from the precision 5-V, ±0.
6%, externally bypassed voltage reference (VREF), supplied by the bq24702/bq24703.
1 BATDEP 2 SRSET 3 ACSET 4 VREF 5 ENABLE 6 BATSET 7 COMP bq24702, bq24703 PW PACKAGE (TOP VIEW) bq24703 RHD PACKAGE (BOTTOM VIEW) ACDET ACPRES ACSEL BATDEP SRSET ACSET VREF ENABLE BATSET COMP ACN ACP 1 2 3 4 5 6 7 8 9 10 11 12 24 ACDRV 23 BATDRV 22 VCC 21 PWM ACSEL 28 ACPRES 27 20 VHSP ACDET 26 19 ALARM 18 VS 17 GND ACDRV 25 BATDRV 24 16 SRP NC 23 15 SRN 14 IBAT VCC 22 13 BATP NC - No internal connection 8 ACN 9 ACP 10 NC 11 NC 12 BATP 13 IBAT ...


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