UC3666

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

4 of 8

www.unisonic.com.tw

QW-R502-489.a

ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

Input Supply Voltage

GND-0.3 ~ +6.5

V

SW Voltage

V

V

SW Peak Current

1.5

A

ESD Classification

Class 2

Junction Temperature

125

°C

Operating Temperature

-20 ~ +85

°C

Storage Temperature Range

-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.

The IC has a protection circuit against static electricity. Do not apply high static electricity or high voltage that

exceeds the performance of the protection circuit to the IC.

THERMAL DATA

PARAMETER

SYMBOL

TYP

MAX

UNIT

Junction ambient

50

°C/W

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX UNIT

Supply Voltage

2.5

5.5

V

Feedback Current

-30

0.5

30

nA

0.588

0.6

0.612

V

Regulated Feedback Voltage

0.582

0.6

0.618

V

Reference Voltage Line Regulation

0.04

0.4

%V

Output Voltage Line Regulation

0.04

0.4

%V

Output Voltage Load Regulation

0.5

%

Shutdown Current

0.01

1

µA

SW Leakage Current

-1

1

µA

PMOSFET On Resistance

0.35

Ω

NMOSFET On Resistance

0.24

Ω

PMOSFET Current Limit

Duty Cycle=100%

Current Pulse Width<1ms

0.9

1.2

1.4

A

Oscillator Frequency

1.2

1.6

2.0

Thermal Shutdown Threshold

145

°C

EN High Level Input Voltage

0.9

V

EN Low Level Input Voltage

0.3

V

EN Input Current

-1

1

µA