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VIN

NC

NC

ENA

GND

VSENSE

BOOT

PH

TPS5420

VIN

VOUT

50

55

60

65

70

75

80

85

90

95

100

0

0.5

1

1.5

2

2.5

3

I

O

− OutputCurrent− A

EfficiencyvsOutputCurrent

V

Absolute Maximum Ratings

(1) (2)

TPS5420-EP

SLVS717 – DECEMBER 2006

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

ORDERING INFORMATION

INPUT VOLTAGE

OUTPUT VOLTAGE

PART NUMBER

–55

°C to 125°C

5.5 V to 35 V

Adjustable to 1.22 V

TPS5420MDREP

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

(2)

The D package is available taped and reeled. Add an R suffix to the device type (i.e., TPS5420DR).

SIMPLIFIED SCHEMATIC

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

VALUE

UNIT

VIN

BOOT

–0.3 to 50

PH (steady-state)

Input voltage range

EN

–0.3 to 7

V

VSENSE

–0.3 to 3

BOOT-PH

10

PH (transient < 10 ns)

–1.2

Source current

PH

Internally limited

Leakage current

PH

10

µA

Operating virtual junction temperature range

–55 to 150

°C

Storage temperature range

–65 to 150

°C

(1)

Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings

only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating

conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2)

All voltage values are with respect to network ground terminal.

(3)

Approaching the absolute maximum rating for the VIN pin may cause the voltage on the PH pin to exceed the absolute maximum rating.

2

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