UC3869

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

4 of 8

www.unisonic.com.tw

QW-R103-110.c



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

35

V

High-Voltage Pin, HV

-0.3 ~ 500

V

V

10

mA

FB Input Voltage

-0.3 ~ 7

V

CS Input Voltage

-0.3 ~ 7

V

RT Input Voltage

-0.3 ~ 7

V

Operating Junction Temperature

-40 ~ +150

°C

Storage Temperature

-55 ~ +160

°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.



RECOMMENDED OPERATING CONDITION

PARAMETER

SYMBOL

RATINGS

UNIT

10 ~ 24

V

Operating Ambient Temperature

-20 ~ +85

°C



PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP MAX

UNIT

Supply Current from HV Pin

0.75

mA

HV Pin Leakage Current After

Startup

Leakage

10

μA

Supply Voltage (VDD)

2

15

μA

Operation Current

0.8

1.8

mA

Start Threshold Voltage

17

19

21

V

Min. Operating Voltage

6

7

8

V

31

33

35

V

Over Voltage Protection

Voltage

Gate Clock is Off

25

27

29

V

Feedback Input Section(FB Pin)

5.4

V

3

V/V

Max Duty Cycle

Maximum Duty

Cycle

70

78

90

%

Burst-Mode Out FB Voltage

1.5

V

Burst-Mode Enter FB Voltage

1.35

V

FB Pin Short Circuit Current

Short FB Pin to GND

and Measure Current

240

μA

Power Limiting FB Threshold

Voltage

4.2

V

Power Limiting Debounce Time

60

88

120

mS

OTP Threshold

150

°C