Part Number
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L4990 |
Manufacturer
|
STMicroelectronics |
Description
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PRIMARY CONTROLLER |
Published
|
Mar 22, 2005 |
Detailed Description
|
®
L4990 L4990A
PRIMARY CONTROLLER
CURRENT-MODE CONTROL PWM SWITCHING FREQUENCY UP TO 1MHz LOW START-UP CURRENT 0.45m...
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Datasheet
|
L4990
|
Overview
®
L4990 L4990A
PRIMARY CONTROLLER
CURRENT-MODE CONTROL PWM SWITCHING FREQUENCY UP TO 1MHz LOW START-UP CURRENT 0.
45mA HIGH-CURRENT OUTPUT DRIVE SUITABLE FOR POWER MOSFET (1A) FULLY LATCHED PWM LOGIC WITH DOUBLE PULSE SUPPRESSION PROGRAMMABLE DUTY CYCLE 100% AND 50% MAXIMUM DUTY CYCLE LIMIT PROGRAMMABLE SOFT START PRIMARY OVERCURRENT FAULT DETECTION WITH RE-START DELAY PWM UVLO WITH HYSTERESIS IN/OUT SYNCHRONIZATION DISABLE LATCHED INTERNAL 100ns LEADING EDGE BLANKING OF CURRENT SENSE PACKAGE: DIP16 AND SO16W DESCRIPTION This primary controller I.
C.
, developed in BCD60II technology, has been designed to implement off BLOCK DIAGRAM
SYNC 1 RCT 2 TIMING 25V DC-LIM 15
MULTIPOWER BCD TECHNOLO...
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