TPS54395

SLVSBC8 – JUNE 2012

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ELECTRICAL CHARACTERISTICS

(1) (continued)

over recommended free-air temperature range, VIN = 12 V (unless otherwise noted)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

UVLO

VREG5 rising

3.83

VREG5 UVLO threshold

V

Hysteresis

0.6

LOGIC THRESHOLDs

ENx H-level threshold voltage

2.0

V

ENx L-level threshold voltage

0.4

V

ENx input resistance

ENx = 12V

225

450

900

k

Ω

CURRENT LIMITs

Current limit

(3)

3.5

4.7

6.5

A

OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION (UVP, OVP)

Output UVP trip threshold

measured on VFBx

63%

68%

73%

Output UVP delay time

1.5

ms

Output UVP enable delay

UVP enable delay / softstart time

x 1.4

x 1.7

x 2.0

THERMAL SHUTDOWN

155

Thermal shutdown threshold

°C

25

(3)

Ensured by design. Not production tested.

4

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