FEATURES
· 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.