VIPER12A datasheet(1/6 Pages) KEXIN

Part #	VIPER12A

Description	Low Power Off Line SMPS Primary Switcher

PDF	6 Pages

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Manufacturer	KEXIN [Guangdong Kexin Industrial Co.,Ltd]

Direct Link	http://www.kexin.com.cn/index.asp

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Low Power Off Line SMPS Primary Switcher

VIPER12A

■ Features

● FIXED 60 KHZ SWITCHING FREQUENCY

● 9V TO 38V WIDE RANGE VDD VOLTAGE

● CURRENT MODE CONTROL

● AUXILIARY UNDERVOLTAGE LOCKOUT

WITH HYSTERESIS

● HIGH VOLTAGE START UP CURRENT SOURCE

● OVERTEMPERATURE, OVERCURRENT AND

OVERVOLTAGE PROTECTION WITH AUTORESTART

■ Absolute Maximum Ratings Ta = 25℃

Parameter

Symbol

Rating

Unit

Supply Voltage

VDD

0 to 50

V

Continuous Drain Current

ID

Internally limited

A

Switching Drain Source Voltage (Tj=25 ... 125℃)

VDS(sw)

-0.3 ～730

V

Start Up Drain Source Voltage (Tj=25 ... 125℃)

VDS(st)

-0.3 ～400

V

Feedback Current

IFB

3

mA

Electrostatic Discharge:

Machine Model (R=0W; C=200pF)

Charged Device Model

VESD

200

1.5

V

KV

Thermal Resistance Junction-Ambient

RθJA

55

℃/W

Junction Operating Temperature

Tj

Internally limited

℃

Case Operating Temperature

Tc

-40 to 150

℃

Storage Temperature

Tstg

-55 to 150

℃

SMD Type

Integrate Circuit

Functional Block Diagram

■

ON/OFF

0.23 V

DRAIN

SOURCE

VDD

PWM

LATCH

60kHz

OSCILLATOR

BLANKING

+

_

8/14.5V

_

+

FF

S

R1

R4

Q

R3

FB

REGULATOR

INTERNAL

SUPPLY

OVERVOLTAGE

LATCH

OVERTEMP.

DETECTOR

1 k

Ω

42V

_

+

R2

FF

S

R

Q

230

Ω

Source

FB

VDD

Drain

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VIPER12A Datasheet(PDF) 1 Page - Guangdong Kexin Industrial Co.,Ltd

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