Microsemi

Analog Mixed Signal Group

NX4108

2

Rev. 1.7

12/30/09

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

ABSOLUTE MAXIMUM RATINGS

VIN to GND

..................................................................... -0.3V to 6V

SW,FB,EN to GND

........................................................... -0.3V to VIN + 0.3V

ESD Susceptibility ............................................................. 1kV

CAUTION: Stresses above those listed in "ABSOLUTE MAXIMUM RATINGS", may cause permanent damage to

the device. This is a stress only rating and operation of the device at these or any other conditions above those

indicated in the operational sections of this specification is not implied.

PACKAGE INFORMATION

5-LEAD PLASTIC SOT23

ELECTRICAL SPECIFICATIONS

V

3

2

1

4

5

SW

EN

GND

FB

VIN

o

JA

CW

θ ≈ 110/

PARAMETER

SYM

Test Condition

Min

TYP

MAX

Units

Reference Voltage

Ref Voltage

0.59

0.6

0.607

V

Line Regualtion

Line Regulation

VIN=3V to 5V,VOUT=1.8V,

IOUT=10mA

2

mV

VIN UVLO

VIN Rising Threshold

2.3

2.5

2.8

V

VIN Falling Threshold

2.3

V

Supp ly Voltage(VIN)

VIN Input Voltage Range

V

IN

2.8

5.5

V

Shutdown Current

EN=GND

1

2.5

uA

Quiescent Current

I

q

No Load, switching

4

mA

Oscillator (Rt)

Frequency

800

1000

1200

kHz

Max Duty Cycle

78

90

%

Min ON time

100

nS

Error Amplifiers

Feedback Input Bias Current

0.05

uA

SS

Soft Start time

Tss

500

uS