5

Electrical characteristics

TJ = - 40 °C to + 125 °C, typical values refer to TJ = + 25 °C, VIN = VOUT + 0.3 V, VEN = 1.1 V, VBIAS = 5 V, IOUT =

50 mA, CIN = COUT = 10 µF, CBIAS = 0.1 µF, CSS = 1 nF unless otherwise specified.

Table 5. Electrical characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VIN

Operating input voltage

VOUT+

Vdrop

5.5

V

VBIAS

Bias pin voltage

2.7

5.5

V

VREF

Reference voltage

T = + 25 °C

0.796

0.8

0.804

V

VOUT

Range

VIN = 5.5 V, IOUT = 1.5 A

VREF

3.6

V

Accuracy

50 mA < IOUT < 1.5 A 2.97 V < VBIAS < 5.5 V

-2

± 0.5

+2

%

Line regulation

VOUT(nom) + 0.3 V < VIN < 5.5 V

0.01

%/V

Load regulation

50 mA < IOUT < 1.5 A

0.02

%/A

Vdrop (1)

VIN dropout voltage

IOUT = 1.5 A, VBIAS - VOUT > 3.25 V

65

125

mV

VBIAS dropout voltage

IOUT = 1.5 A VIN = VBIAS

0.92

1.1

V

Icl (2)

Current limit

VOUT = 80% x VOUT(nom)

2.0

3

5.5

A

IBIAS

Bias pin current

0.88

1.5

mA

ISHDN

Shutdown supply current

VEN < 0.4 V (measured through GND)

1

50

µA

IFB

Feedback pin current

-1

0.001

+1

µA

PSRR

Power supply rejection (VIN

to VOUT)

f = 1 kHz, IOUT = 1.5 A VIN = 1.8 V,

VOUT = 1.5 V

70

dB

f = 300 kHz, IOUT = 1.5 A VIN = 1.8 V,

VOUT = 1.5 V

30

Power supply rejection

(VBIAS to VOUT)

f = 1 kHz, IOUT = 1.5 A VIN = 1.8 V,

VOUT = 1.5 V

75

dB

f = 300 kHz, IOUT = 1.5 A VIN = 1.8 V,

VOUT = 1.5 V

40

Noise

Output noise voltage

f = 100 Hz to 100 kHz, IOUT = 1.5 A,

CSS = 1 nF

25xVOUT

µVRMS

ISS

Soft-start charging current

VSS = 0.4 V

0.44

µA

Tstr

Min. start-up time

IOUT = 1 A, CSS = floating

100

µs

VEN-H

Enable input high

1.1

5.5

V

VEN-L

Enable input low

0

0.4

V

VEN-Hyst

Enable hysteresis

50

mV

TDG

Enable deglitch time

20

µs

IEN

Enable pin current

VEN = 5 V

0.1

1

µA

VIT

Power Good threshold

VOUT decreasing

85

90

94

%VOUT

VHYS

Power Good hysteresis

3

%VOUT

LD59150

Electrical characteristics

DS12455 - Rev 5

page 6/22