US2651

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

4 of 6

www.unisonic.com.tw

QW-R502-B23.b



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

Drain Voltage (Off State)

-0.3~BVdss

V

-0.3~40

V

10

mA

COMP Voltage

-0.3~7

V

CS Input Voltage

-0.3~7

V

Operating Junction Temperature

-40~150

°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 CHARACTERISTICS

PARAMETER

SYMBOL

RATINGS

UNIT

Junction to Ambient

DIP-8

75

°C/W

SOP-8

90

°C/W



PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

Standby Current

35

μA

Operation Current

Operation Supply Current CS=0V,

3.0

mA

7

8

9

V

12

13

14

V

Over Voltage Protection

Threshold

24.5 25.5 26.5

V

Regulated to 19.3V

than 2.5V

18.5 19.3 20.5

V

CURRENT SENSE INPUT SECTION

LEB Time

300

ns

Over Current Threshold

750

860

970

mV

OCP Propagation Delay

110

ns

Input Impedance

40

KΩ

FREQUENCY SECTION

IC Maximum Frequency

40

50

60

KHz

Frequency Shuffling Range

△

±6

%

ERROR AMPLIFIER SECTION

DC Gain of EA

Gain

60

dB

Max. Cable Compensation

Current

6

μA

POWER MOSFET SECTION

MOSFET Drain-Source

Breakdown Voltage

600

V

On Resistance

15

Ω