BQ24072_10 Datasheet, PDF (3/42 Pages) Texas Instruments – 1.5A USB-FRIENDLY Li-Ion BATTERY CHARGER AND POWER-PATH MANAGEMENT IC

www.ti.com
bq24072, bq24073
bq24074, bq24075, bq24079
SLUS810E – SEPTEMBER 2008 – REVISED JULY 2010
ABSOLUTE MAXIMUM RATINGS⁽¹⁾
over the 0°C to 125°C operating free-air temperature range (unless otherwise noted)
VALUE
UNIT
IN (with respect to VSS)
–0.3 to 28
V
V_I
Input Voltage
BAT (with respect to VSS)
–0.3 to 5
V
OUT, EN1, EN2, CE, TS, ISET, PGOOD, CHG, ILIM, TMR, ITERM,
SYSOFF, TD (with respect to VSS)
–0.3 to 7
V
I_I
Input Current
I_O
Output Current
(Continuous)
IN
OUT
BAT (Discharge mode)
BAT (Charging mode)
1.6
A
5
A
5
A
1.5 ⁽²⁾
A
Output Sink Current
CHG, PGOOD
15
mA
T_J
Junction temperature
T_stg Storage temperature
–40 to 150
°C
–65 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. All voltage
values are with respect to the network ground terminal unless otherwise noted.
(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 ⁽¹⁾
RGT ⁽²⁾
R_qJA
39.47 °C/W
R_qJC
2.4 °C/W
POWER RATING
T_A ≤ 25°C
2.3 W
T_A = 85°C
225mW
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
(2) This data is based on using the JEDEC High-K board and the exposed die pad is connected to a Cu pad on the board. The pad is
connected to the ground plane by a 2x3 via matrix.
RECOMMENDED OPERATING CONDITIONS
MIN MAX UNIT
IN voltage range
4.35
26 V
V_I
’72, ’73, ‘75, '79
IN operating voltage range
‘74
4.35
6.4
V
4.35 10.2
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
–40
125 °C
1100 8000 Ω
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 for R_ISET to avoid issues with the R_ISET short test when using the maximum charge current setting.
Copyright © 2008–2010, Texas Instruments Incorporated
Submit Documentation Feedback
3
Product Folder Link(s): bq24072 bq24073 bq24074 bq24075, bq24079