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BQ24702PW View Datasheet(PDF) - Texas Instruments

Part NameBQ24702PW TI
Texas Instruments TI
DescriptionMULTICHEMISTRY BATTERY CHARGER CONTROLLER AND SYSTEM POWER SELECTOR


BQ24702PW Datasheet PDF : 32 Pages
First Prev 31 32
PW (R-PDSO-G**)
14 PINS SHOWN
0,65
14
0,30
0,19
8
0,10 M
4,50 6,60
4,30 6,20
1
7
A
MECHANICAL DATA
MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999
PLASTIC SMALL-OUTLINE PACKAGE
0,15 NOM
Gage Plane
0°– 8°
0,25
0,75
0,50
1,20 MAX
0,15
0,05
Seating Plane
0,10
PINS **
8
DIM
14
16
20
24
28
A MAX
3,10 5,10 5,10 6,60 7,90 9,80
A MIN
2,90 4,90 4,90 6,40 7,70 9,60
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-153
4040064/F 01/97
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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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.

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)

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