TPS22954, TPS22953

www.ti.com

SLVSCT5C – MARCH 2015 – REVISED JULY 2015

8.4 Thermal Information

TPS22953/54

DQC

DSQ

UNIT

(WSON)

(WSON)

10 PINS

10 PINS

Junction-to-ambient thermal resistance

65.2

63.5

°C/W

Junction-to-case (top) thermal resistance

73.9

81.6

°C/W

Junction-to-board thermal resistance

25.5

34.1

°C/W

Junction-to-top characterization parameter

2

1.9

°C/W

Junction-to-board characterization parameter

25.4

34.5

°C/W

Junction-to-case (bottom) thermal resistance

8.5

7.9

°C/W

(1)

For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report, SPRA953.

8.5 Electrical Characteristics

Unless otherwise noted, the specification in the following table applies over the operating ambient temperature

–40 °C

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VOLTAGE THRESHOLDS

-40°C to 105°C

650

700

750

mV

-40°C to 105°C

560

600

640

mV

-40°C to 105°C

465

515

565

mV

-40°C to 105°C

410

455

500

mV

TIMINGS

Blanking time for EN and SNS

EN or SNS Rising

-40°C to 105°C

100

µs

EN or SNS Falling

-40°C to 105°C

5

µs

Output discharge time

-40°C to 105°C

10

ms

(TPS22954 Only)

Output Restart Time

SNS Falling

-40°C to 105°C

2

ms

Response Time for Reverse

-40°C to 105°C

10

µs

Current Blocking

EN Falling

(TPS22953 Only)

THERMAL CHARACTERISTICS

Thermal shutdown

Junction Temperature Rising

-

130

150

170

°C

Thermal shutdown hysteresis

Junction Temperature Falling

-

20

°C

REVERSE CURRENT BLOCKING

25°C

0.01

2

µA

Input Reverse Blocking Current

-40°C to 85°C

5

µA

(TPS22953 Only)

-40°C to 105°C

11

µA

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