VIPER12ASE STMicroelectronics, VIPER12ASE Datasheet

VIPER12ASE

Manufacturer Part Number

VIPER12ASE

Description

SOP8

Manufacturer

STMicroelectronics

Datasheet

1.VIPER12ASE.pdf (21 pages)

Specifications of VIPER12ASE

Date_code

08+

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Features

Description

The VIPer12A combines a dedicated current

mode PWM controller with a high voltage Power

MOSFET on the same silicon chip.

Block diagram

January 2006

Fixed 60kHZ Switching Frequency

9V to 38V Wide Range V

Current Mode Control

Auxiliary Undervoltage Lockout with Hysteresis

High Voltage Start-up Current Source

Overtemperature, Overcurrent and

Overvoltage Protection with Auto-Restart

Typical power capability

– European (195 - 265 Vac) 8W for SO-8,

– European (85 - 265 Vac) 5W for SO-8,

13W for DIP-8

8W for DIP-8

VDD

8/14.5V

42V

REGULATOR

INTERNAL

SUPPLY

ON/OFF

Voltage

Low Power OFF-Line SMPS Primary Switcher

OVERTEMP.

DETECTOR

OVERVOLTAGE

LATCH

DocRev1

OSCILLATOR

60kHz

Typical applications cover off line power supplies

for battery charger adapters, standby power

supplies for TV or monitors, auxiliary supplies for

motor control, etc.

The internal control circuit offers the following

benefits:

– Large input voltage range on the V

– Automatic burst mode in low load condition.

– Overvoltage protection in HICCUP mode.

LATCH

PWM

accommodates changes in auxiliary supply

voltage. This feature is well adapted to

battery charger adapter configurations.

BLANKING

SO-8

VIPer12ADIP - E

VIPer12AS - E

0.23 V

1 kΩ

DIP-8

230 Ω

SOURCE

DRAIN

www.st.com

1/21

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