L5993 STMicroelectronics, L5993 Datasheet

L5993

Manufacturer Part Number

L5993

Description

Switching Converters, Regulators & Controllers Prog Current Mode

Manufacturer

STMicroelectronics

Datasheet

1.L5993.pdf (22 pages)

Specifications of L5993

Mounting Style

Through Hole

Package / Case

PDIP-16

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

L5993

Manufacturer:

Quantity:

20 000

Company:

BOSTOCK HK LIMITED

Part Number:

L5993D

Manufacturer:

Company:

BOSTOCK HK LIMITED

Part Number:

L5993D013TR

Manufacturer:

Current page: 1 of 22
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DESCRIPTION

This primary controller I.C., developed in BCD60II

technology, has been designed to implement off

BLOCK DIAGRAM

July 1999

ING FREQUENCY

FOR POWER MOSFET (1A)

BLE PULSE SUPPRESSION

TION WITH RE-START DELAY

ING OF CURRENT SENSE

CURRENT-MODE CONTROL PWM

SWITCHING FREQUENCY UP TO 1MHz

LOW START-UP CURRENT (< 120 A)

CONSTANT OUTPUT POWER VS. SWITCH-

HIGH-CURRENT OUTPUT DRIVE SUITABLE

FULLY LATCHED PWM LOGIC WITH DOU-

PROGRAMMABLE DUTY CYCLE

100%AND 50% MAXIMUM DUTY CYCLE LIMIT

PROGRAMMABLE SOFT START

PRIMARY OVERCURRENT FAULT DETEC-

PWM UVLO WITH HYSTERESIS

IN/OUT SYNCHRONIZATION

LATCHED DISABLE

INTERNAL 100ns LEADING EDGE BLANK-

PACKAGE: DIP16 AND SO16N

C-POWER

ISEN

RCT

DIS

2.5V

1.2V

OVER CURRENT

DIS

BLANKING

TIMING

SYNC

PWM

SOFT-START

CONSTANT POWER CONTROLLER

FAULT

DC-LIM

15V/10V

25V

line or DC-DC power supply applications using a

fixed frequency current mode control.

Based on a standard current mode PWM control-

ler 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, over-

current protection with soft start intervention and

”constant power” function for cotrolling throughput

power in multisync monitor SMPS.

VREF OK

SGND

CLK

DIS

MULTIPOWER BCD TECHNOLOGY

ORDERING NUMBERS: L5993 (DIP16)

DIP16

PWM UVLO

COMP

E/A

Vref

13V

2.5V

D97IN765

VREF

L5993D (SO16)

SO16N

OUT

PGND

VFB

L5993

1/22

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