P1690

Preliminary

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

3 of 5

www.unisonic.com.tw

QW-R103-081.c



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

Input Voltage

-0.3 ~ 70

V

Feedback Pin Voltage

V

EN Pin Voltage

V

Output Switch Pin Voltage

V

Power Dissipation

Internally limited

mW

Junction to Ambient, No Heatsink, Free Air

60

°C/W

Operating Junction Temperature

-40 ~ 125

°C

Storage Temperature

-65 ~ 150

°C

Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.



PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

System Parameters Test Circuit Figure1

FB Voltage

1.225

1.25

1.275

V

Efficiency

η

88

%

Efficiency

η

87

%

Efficiency

η

83

%



unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input Operation Voltage

5

65

V

Shutdown Supply Current

85

200

uA

Quiescent Supply Current

2.5

5

mA

Oscillator Frequency

Fosc

120

150

180

KHz

Switch Current Limit

0.4

A

High (Regulator OFF)

1.6

V

EN Pin Threshold

Low (Regulator ON)

0.8

V

6

20

uA

EN Pin Input Leakage Current

1

20

uA

Output Saturation Voltage

0.85

V

Max. Duty Cycle

100

%