Datasheet4U Logo Datasheet4U.com

L5991A - PRIMARY CONTROLLER

Description

line or DC-DC power supply applications using a fixed frequency current mode control.

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.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
L59 BI-POLAR AND BI-COLOR INDICATOR LAMPS Kingbright Corporation
L5988D 4A continuous (more than 5 A pulsed) step-down switching regulator ST Microelectronics
L5989D DC-DC Conversion ST Microelectronics
L59EGW BI-POLAR AND BI-COLOR INDICATOR LAMPS Kingbright Corporation

Other Datasheets by STMicroelectronics

Part Number Description
L5991 PRIMARY CONTROLLER
L5993 CONSTANT POWER CONTROLLER
L5994 ADJUSTABLE TRIPLE OUTPUT POWER SUPPLY CONTROLLER
L5996 5 BIT DYNAMIC DAC CONTROLLER FOR MOBILE CPU
L5950 MULTIPLE MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
L5991 ® L5991A PRIMARY CONTROLLER WITH STANDBY CURRENT-MODE CONTROL PWM SWITCHING FREQUENCY UP TO 1MHz LOW START-UP CURRENT (< 120µA) 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 STANDBY FUNCTION PROGRAMMABLE SOFT START PRIMARY OVERCURRENT FAULT DETECTION WITH RE-START DELAY PWM UVLO WITH HYSTERESIS IN/OUT SYNCHRONIZATION LATCHED DISABLE INTERNAL 100ns LEADING EDGE BLANKING OF CURRENT SENSE PACKAGE: DIP16 AND SO16 DESCRIPTION This primary controller I.C.
Published: |