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REV. A

Item

Symbol

Rating

Unit

Condition

Min.

Typ.

Max.

[Switching regulator part]

Output voltage 1

VOUT1

1.15

1.20

1.25

V

REFIN=0.60 V

Output voltage 2

VOUT2

1.45

1.50

1.55

V

REFIN=0.75 V

[Soft start part]

Soft start time

Tss

-

40

70

usec

[Oscillator circuit]

Switching frequency

fosc

1.5

2.0

2.5

MHz

[Driver part]

PchFET on resistance

RonP

-

300

500

mΩ

NchFET on resistance

RonN

-

250

450

mΩ

[Bypass switch part]

On resistance

RBYP

-

70

120

mΩ

[Error Amp part]

REF input bias current

IAMPIN

-

0

500

nA

[Control pin part]

SHDN pin pull down resistor

RSHDN

0.5

1

2

MΩ

SHDN pin control

voltage

Operation

VSHDNH

1.4

-

VIN

V

Non operation

VSHDNL

0

-

0.4

V

HP pin pull down resistor

RHP

0.5

1

2

MΩ

HP pin control

voltage

Operation

VHPH

1.4

-

VIN

V

Non operation

VHPL

0

-

0.4

V

【UVLO】

Release voltage threshold

Uvth

1.95

2.2

2.45

V

Hysteresis

Uvhy

70

90

110

mV

[Circuit current]

Circuit current at shutdown

IIN

-

0

10

uA

SHDN=0V

* No design for durability against radiation