UC3658

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

3 of 4

www.unisonic.com.tw

QW-R502-A75.a



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Input Voltage

6.0

V

Enable, FB Voltage

V

Junction Temperature

150

°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. The device is not guaranteed to function outside its operating conditions.



RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Input Voltage

3 ~ 5.5

V

Junction Temperature

-40 ~ 125

°C

Ambient Temperature

-40 ~ 85

°C



THERMAL DATA

PARAMETER

SYMBOL

RATINGS

UNIT

Junction to Ambient

143

°C/W

Junction to Case

14

°C/W



unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input Voltage Range

3

5.5

V

Shutdown Current

EN=0

0.1

1

μA

Feedback Reference Voltage

0.588

0.6

0.612

V

FB Input Current

-50

50

nA

PFET RON

0.1

Ω

NEET RON

0.07

Ω

PFET Current Limit

3.6

A

EN Rising Threshold

1.5

V

EN Falling Threshold

0.4

V

Input UVLO Threshold

2.9

V

UVLO Hysteresis

0.2

V

Oscillator Frequency

1

MHz

Min On Time

50

ns

Max Duty Cycle

100

%

Thermal Shutdown Temperature

150

°C