BQ24075T Datasheet, PDF (3/29 Pages) Texas Instruments – 1.5A USB-Friendly Li-Ion Battery Charger and Power-Path Management IC

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bq24075T
bq24079T
SLUS937 – DECEMBER 2009
ABSOLUTE MAXIMUM RATINGS^{(1) (2)}
over operating free-air temperature range (unless otherwise noted)
VALUE / UNIT
IN (with respect to VSS)
–0.3 to 28 V
Input voltage
BAT (with respect to VSS)
OUT, EN1, EN2, CE, TS, ISET, PGOOD, CHG, ILIM, VREF, ITERM, SYSOFF, TD
(with respect to VSS)
–0.3V to 5V
–0.3 TO 7 V
Input current
IN
1.6 A
Output current
(Continuous)
OUT
BAT (Discharge mode)
BAT (Charging mode)
5A
5A
1.5A
Output sink current
CHG, PGOOD
15 mA
Junction temperature, T_J
Storage temperature, T_STG
–40°C to 150°C
–65°C to 150°C
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) The IC operational charging life is reduced to 20,000 hours, when charging at 1.5A and 125°C. The thermal regulation feature reduces
charge current if the IC’s junction temperature reaches 125°C; thus without a good thermal design the maximum programmed charge
current may not be reached.
DISSIPATION RATINGS
PACKAGE
QFN-16 RGT
R_θJA
39.47 °C/W
R_θJC
2.4°C/W
T_A < 25°C
POWER RATING
2.3 W
DERATING FACTOR
ABOVE T_A = 25°C
225 mW
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
MIN MAX UNITS
IN voltage range
V_IN
IN operating voltage range
4.35
26 V
4.35
6.4 V
I_IN
I_OUT
I_BAT
I_CHG
T_J
R_ILIM
R_ISET
R_ITERM
R_TMR
Input current, IN pin
Current, OUT pin
Current, BAT pin (Discharging)
Current, BAT pin (Charging)
Junction Temperature
Maximum input current programming resistor
Fast-charge current programming resistor⁽²⁾
Termination current programming resistor
Timer programming resistor
1.5 A
4.5 A
4.5 A
1.5 ⁽¹⁾
A
0
125 °C
1.07
7.5 kΩ
590 3000 Ω
0
15 kΩ
18
72 kΩ
(1) The IC operational charging life is reduced to 20,000 hours, when charging at 1.5A and 125°C. The thermal regulation feature reduces
charge current if the IC’s junction temperature reaches 125°C; thus without a good thermal design the maximum programmed charge
current may not be reached.
(2) Use a 1% tolerance resistor RISET to avoid issues with the R_ISET short test when using the maximum charge current setting.
Copyright © 2009, Texas Instruments Incorporated
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