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DATA SHEET

Bipolar Analog Integrated Circuit

碌

PC1909

SWITCHING REGULATOR CONTROL IC

The

碌

PC1909 is a switching regulator control IC ideal for primary side control of active-clamp type

Note

DC/DC

converters. This IC has 2 outputs employing a totem-pole circuit with peak output current 1.2 A, and is capable of

directly driving a power MOS-FET. As a result, it has been possible to realize primary side control of an active-clamp

type converter on a single chip.

Note

It is necessary to obtain license from Vicor Corporation before using the

碌

PC1909 in an active-clamp type

circuit.

FEATURES

鈥?2 on-chip outputs; for Q and Q

鈥?Capable of directly driving a power MOS-FET

鈥?Drive supply voltage range: 7 V to 24 V

鈥?On-chip remote control circuit

鈥?On-chip pulse-by-pulse overcurrent protection circuit

鈥?On-chip overvoltage latch circuit

ORDERING INFORMATION

Part Number

Package

16-pin plastic DIP (300 mils)

16-pin plastic SOP (300 mils)

碌

PC1909CX

碌

PC1909GS

The information in this document is subject to change without notice. Before using this document, please

confirm that this is the latest version.

Not all devices/types available in every country. Please check with local NEC representative for

availability and additional information.

Document No. G14309EJ1V0DS00 (1st edition)

Date Published July 1999 N CP(K)

Printed in Japan

漏

1999

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