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WS2268

Steady, keep for your advance

Recommended Condition

Parameter

Value

Unit

Supply voltage（VP）

10~30

V

Operating temperature

-20~85

℃

Absolute Maximum Ratings(Note 1)

Parameter

Value

Unit

Supply voltage（VP）

30

V

Feedback voltage（U）

-40~10

V

others（IP, G, PCC, CDC）

-0.3~7

V

Output current at G

Internally limited

A

Power dissipation at Ta=25℃

0.657

W

Operating junction temperature

150

℃

Storage temperature

-65~150

℃

Thermal resistance junction-to-ambient

190

℃

/W

Note 1：Stresses greater than those listed under “Absolute Maximum Rating” may cause permanent damage to the device. These are stress

ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended

operating conditions” is not implied. Exposure to “Absolute Maximum Rating” for extended periods may affect device reliability.

Electrical Characteristics (Tc = 25°C)

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Start-up section

Start-up threshold

Vstu

18

20

22

V

UVLO threshold

Vlo

7

9

11

V

Start-up current

Istart

VP=Vstu-0.5V

3

5

uA

Operating current

Static

600

900

uA

Current sense section

IP compare threshold

Vip

475

500

525

mV

Leading edge blanking

500

ns

Feedback section

Feedback threshold voltage

Vs&href

4

V

Input resistor

Ru

Dynamic

350

KΩ

Over voltage protection

Vovp

7

8

9

V

Open circuit protection vlotage

Vockp

-1.2

-1

-0.8

V

Drive output section

Output low voltage

VOL

Io = -20mA

0.8

V

Output high voltage

VOH

Io = 20mA

8

V

Output clamp

VClamp

19

V

Rise time

Tr

CL = 1nf

200

ns

Fall time

Tf

CL = 1nf

70

ns