bq24075-Q1

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SLUSAU3B – FEBRUARY 2012 – REVISED MARCH 2012

THERMAL INFORMATION

BQ24075-Q1

UNITS

RGT 16-PINS

Junction-to-ambient thermal resistance

45.8

Junction-to-case (top) thermal resistance

53.6

Junction-to-board thermal resistance

18.1

°C/W

Junction-to-top characterization parameter

1.1

Junction-to-board characterization parameter

18.0

Junction-to-case (bottom) thermal resistance

5.2

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

4.35

26

V

IN operating voltage range

4.35

6.4

V

Input current, IN pin

1.5

A

Current, OUT pin

4.5

A

Current, BAT pin (Discharging)

4.5

A

Current, BAT pin (Charging)

A

Maximum input current programming resistor

1100

8000

Ω

590

3000

Ω

Termination current programming resistor

0

15

k

Ω

Timer programming resistor

18

72

k

Ω

(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)

Copyright © 2012, Texas Instruments Incorporated

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