UD05121

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

3 of 7

www.unisonic.com.tw

QW-R221-028.E



PARAMETER

SYMBOL

RATINGS

UNIT

-0.3~7

V

SW Pin Voltage

V

EN, FB Pins Voltage

V

Continuous Power Dissipation

370

mW

Junction Temperature

-40~125

°C

Storage Temperature

-65~150

°C

Notes: 1. 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.

2. Stresses exceed those ratings may damage the device.



THERMAL CHARACTERISTICS

PARAMETER

SYMBOL

RATINGS

UNIT

Junction to Ambient

270

°C/W

Junction to Case

85

°C/W



PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input Voltage

2.5

5.5

V

Input UVLO

UVLO

1.8

2.2

2.5

V

Input OVLO

OVLO

6.0

V

Quiescent Current

250

350

μA

Shutdown Current

0.1

1

μA

FB Pin Voltage

0.588

0.6

0.612

V

FB Pin Current

±50

nA

Load Regulation

0.6

%

Load Regulation

0.3

%/V

EN Pin Voltage High

1.5

V

EN Pin Voltage Low

0.4

V

EN Pin Leakage Current

0.1

1

uA

Switching Frequency

1.1

1.5

1.9

MHz

Current Limit

Duty Cycle<35%

1.4

1.7

A

Switching Maximum Duty

Dmax

100

%

Minimum Duty

Dmin

0

%

300

mΩ

200

mΩ

Low Side Discharger

60

Ω

Thermal Shutdown

160

°C

Thermal Shutdown Protection hysteresis

30

°C