L5991 - PRIMARY CONTROLLER

STMicroelectronics

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Datasheet Details

Part number	L5991
Manufacturer	STMicroelectronics
File Size	410.86 KB
Description	PRIMARY CONTROLLER
Datasheet	L5991_STMicroelectronics.pdf

L5991 Product details

Description

This primary controller I.C., developed in BCD60II technology, has been designed to implement off BLOCK DIAGRAM MULTIPOWER BCD TECHNOLOGY DIP16 SO16 ORDERING NUMBERS: L5991/L5991A (DIP16) L5991D/L5991AD (SO16) line or DC-DC power supply applications using a fixed frequency current mode control.Based on a standard current mode PWM controller this device includes some

Features

such as programmable soft start, IN/OUT synchronization, disable (to be used for over voltage protection and for power management), precise maximum Duty Cycle Control, 100ns leading edge blanking on current sense, pulse by pulse current limit, overcurrent protection with soft start intervention, and Standby function for oscillator frequency reduction when the converter is lightly loaded. 2 RCT + 3 DC - 14 DIS - DIS + 2.5V ISEN SS OVER.

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Published: Mar 22, 2005 |