UC3656

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

3 of 7

www.unisonic.com.tw

QW-R502-469.K



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

Power Supply Voltage

-0.3 ~ +6.0

V

RUN, FB

V

Input Pin Voltage

SW

V

P-Channel Switch Source Current (DC)

1000

mA

N-Channel Switch Sink Current (DC)

1000

mA

Peak SW Sink and Source Current

1.5

A

Junction Temperature

+150

°C

Operating Temperature

-20 ~ +85

°C

Storage Temperature

-55 ~ +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.



THERMAL DATA

PARAMETER

SYMBOL

RATINGS

UNIT

Junction to Ambient

165

°C/W



PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX UNIT

Input Supply Range

2.5

5.5

V

Under Voltage Lockout

2.4

V

Quiescent Current (Note)

300

µA

Current In Standby Mode

0.5

1

µA

Feedback Voltage

0.588

0.6

0.612

V

Feedback Voltage Line-Regulation

0.1

0.5

%

Feedback Variation with Temperature

0.5

1.0

%

Feedback Current

±200

nA

Peak Inductor Current (Note)

1.10

1.25

1.50

A

Maximum Output Current (Note)

1000

mA

0.8

1.6

2.0

Oscillator Frequency

FB=0V

200

Short Current

FB<0.3V

300

mA

Soft-start time

2.8

mS

0.4

0.5

Ω

0.35

0.45

Ω

SW Leakage Current

±0.1

±1

µA

RUN Threshold

0.3

1.0

1.5

V

RUN Leakage Current

±0.1

±1

µA

Note:

L

t

)

V

V

(

I

I

I

I

ON

OUT

IN

O

O

PK

















2

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