BQ24075-Q1 Datasheet, PDF (3/36 Pages) Texas Instruments – 1.5A USB-FRIENDLY Li-Ion BATTERY CHARGER AND POWER-PATH MANAGEMENT IC

bq24075-Q1
www.ti.com
SLUSAU3B – FEBRUARY 2012 – REVISED MARCH 2012
THERMAL INFORMATION
THERMAL METRIC⁽¹⁾
θ_JA
θ_JCtop
θ_JB
ψ_JT
ψ_JB
θ_JCbot
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
BQ24075-Q1
RGT 16-PINS
45.8
53.6
18.1
1.1
18.0
5.2
UNITS
°C/W
SPACER
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
RECOMMENDED OPERATING CONDITIONS
MIN MAX UNIT
IN voltage range
V_I
IN operating voltage range
4.35
26 V
4.35
6.4 V
I_IN
I_OUT
I_BAT
I_CHG
R_ILIM
R_ISET
R_ITERM
R_TMR
Input current, IN pin
Current, OUT pin
Current, BAT pin (Discharging)
Current, BAT pin (Charging)
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
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 © 2012, Texas Instruments Incorporated
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