UD05208

Preliminary

CMOS IC

UNISONIC TECHNOLOGIES CO., LTD

3 of 5

www.unisonic.com.tw

QW-R115-028.c



ABSOLUTE MAXIMUM RATING (T

A=25°C, unless otherwise specified)

PARAMETER

SYMBOL

RATINGS

UNIT

Voltage range

VIN

7

V

EN Pin Voltage

VEN

7

V

Feedback Pin Voltage

VFB

3.6

V

Switch Pin Voltage

VSW

VIN+0.3

V

Junction Temperature

TJ

-20 ~ +85

°C

Operation Temperature Range

TOPR

-20 ~ +85

°C

Storage Temperature Range

TSTG

-20 ~ +85

°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.



THERMAL DATA

PARAMETER

SYMBOL

RATINGS

UNIT

Junction to Ambient

θJA

208

°C/W



ELECTRICAL CHARACTERISTICS (V

IN=VEN=3.6V, VOUT=1.8V, TA=25°C, unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input voltage range

VIN

2.7

5.5

V

Quiescent current into VIN pin

IQ

Close Loop, IOUT=0A

50

uA

Under voltage lock out

VUVLO

2.2

V

Logic High-level input voltage

VIH

0.85

V

Logic Low-level input voltage

VIL

0.8

V

Shutdown current into VIN pin

ISD

1

μA

EN leakage current

IEN,LKG

1

μA

Feedback regulation voltage

VFB

0.6

V

High-side FET on resistance

RDS(on)

IOUT=500mA,VIN=3.6V

130

m

Ω

Low-side FET on resistance

IOUT=500mA,VIN=3.6V

90

m

Ω

Low-side FET valley current limit

ILIM, LS

2.0

A

High-side FET peak current limit

ILIM, HS

3.6

A

Switching frequency

fSW

ILOAD=1A

1.5

MHz

Thermal Shutdown Threshold

TSD

160

°C