5

TPS54335-2A

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SLUSCK3 – JULY 2016

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6.4 Thermal Information

over operating free-air temperature range (unless otherwise noted)

THERMAL METRIC

TPS54335-2A

UNIT

DRC (VSON)

10 PINS

Junction-to-ambient thermal resistance

43.9

°C/W

Junction-to-case (top) thermal resistance

55.4

°C/W

Junction-to-board thermal resistance

18.9

°C/W

Junction-to-top characterization parameter

0.7

°C/W

Junction-to-board characterization parameter

19.1

°C/W

Junction-to-case (bottom) thermal resistance

5.3

°C/W

(1)

Measured at pins

(2)

Not production tested.

6.5 Electrical Characteristics

The electrical ratings specified in this section apply to all specifications in this document unless otherwise noted. These

specifications are interpreted as conditions that will not degrade the parametric or functional specifications of the device for

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

SUPPLY VOLTAGE AND UVLO (VIN PIN)

Operating input voltage

4.5

28

V

Input UVLO threshold

Rising V

4

4.5

V

Input UVLO hysteresis

180

400

mV

VIN-shutdown supply current

= 0 V

2

10

µA

VIN-operating non-switching supply

current

= 810 mV

310

800

µA

ENABLE (EN PIN)

Enable threshold

Rising

1.21

1.28

V

Enable threshold

Falling

1.1

1.17

V

Input current

= 1.1 V

1.15

µA

Hysteresis current

= 1.3 V

3.3

µA

VOLTAGE REFERENCE

Reference

0.7936

0.8 0.8064

V

0.788

0.8

0.812

MOSFET

= 3 V

160

280

mΩ

= 6 V

128

230

mΩ

V = 12 V

84

170

mΩ

ERROR AMPLIFIER

Error-amplifier transconductance (gm)

1300

µmhos

Error-amplifier source and sink

100

µA

0.5

A

8

A/V

CURRENT-LIMIT

High-side switch current-limit threshold

4

4.9

6.5

A

Low-side switch sourcing current-limit

3.5

4.7

6.1

A

Low-side switch sinking current-limit

0

A