L5993 Datasheet PDF | STMicroelectronics

STMicroelectronics L5993

This primary controller I.C., developed in BCD60II technology, has been designed to implement off BLOCK DIAGRAM SYNC 1 RCT 2 TIMING + + 2.5V C-POWER 16 + BLANKING T DIS DC-LIM 15 MULTIPOWER BCD TECHNOLOGY DIP16 SO16N ORDERING NUMBERS: L5993 (DIP16) L5993D (SO16) line or DC-DC power supply applications using a fixed frequency current mode control.

Part No.	L5993
Datasheet	L5993 Download
Manufacturer	STMicroelectronics
Description	CONSTANT POWER CONTROLLER
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DESCRIPTION

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 ”constant power” function for cotrolling throughput power in multisync monitor SMPS. VCC 8 VREF 4 25V + 15V/10V PWM UVLO Vref DC 3 DIS 14 9 VC 13V S R PWM 10 OUT Q OVER CURRENT ISEN 13 + 1.2V 7 2R 1V R FAULT SOFT-START VREF OK CLK DIS 11 PGND SS + E/A 2.5V - 5 VFB 12 SGND 6 COMP D97IN765 July 1999 1/22 L5993

ABSOLUTE MAXIMUM RATINGS

Symbol VCC IOUT Parameter Supply Voltage (ICC < 50mA) (*) Output Peak Pulse Current Analog Inputs & Outputs (6,7) Analog Inputs & Outputs (1,2,3,4,5,15,14, 13, 16) Power Dissipation @ Tamb = 70°C (DIP16) @ Tamb = 50°C (SO16) Junction Temperature, Operating Range Storage...