LM5026MTX+ National Semiconductor, LM5026MTX+ Datasheet

LM5026MTX+

Manufacturer Part Number

LM5026MTX+

Description

Manufacturer

National Semiconductor

Datasheet

1.LM5026MTX.pdf (23 pages)

Specifications of LM5026MTX+

Notes

NEW

Date_code

10+

Current page: 1 of 23
Download datasheet (937Kb)

LM5026

Active Clamp Current Mode PWM Controller

General Description

The LM5026 PWM controller contains all of the features

necessary to implement power converters utilizing the active

clamp / reset technique with current mode control. With the

active clamp technique, higher efficiencies and greater

power densities can be realized compared to conventional

catch winding or RDC clamp / reset techniques. Two control

outputs are provided, the main power switch control

(OUT_A) and the active clamp switch control (OUT_B). The

device can be configured to control either a P-Channel or

N-Channel clamp switch. The main gate driver features a

compound

and Bipolar devices, providing superior gate drive character-

istics. The LM5026 can be configured to operate with bias

voltages over a wide input range of 8V to 100V. Additional

features include programmable maximum duty cycle, line

under-voltage lockout, cycle-by-cycle current limit, hiccup

mode fault operation with adjustable timeout delay, PWM

slope compensation, soft-start, 1MHz capable oscillator with

synchronization input / output capability, precision reference

and thermal shutdown.

Typical Application Circuit

configuration,

Simplified Forward Power Converter with Active Clamp Reset

consisting

DS201479

both

MOS

Features

n Current Mode Control

n Internal 100V Start-up Bias Regulator

n 3A Compound Main Gate Driver

n High Bandwidth Opto-coupler Interface

n Programmable Line Under-Voltage Lockout (UVLO) with

n Versatile Dual Mode Over-Current Protection with hiccup

n Programmable Overlap or Deadtime between the Main

n Programmable Maximum Duty Cycle Clamp

n Programmable Soft-start

n Leading Edge Blanking

n Resistor Programmed 1MHz Capable Oscillator

n Oscillator Sync I/O Capability

n Precision 5V Reference

Packages

n TSSOP-16

n LLP-16 (5x5 mm) Thermally Enhanced (Available

Adjustable Hysteresis

delay timer

and Active Clamp Outputs

Soon)

20147901

January 2006

www.national.com

Related parts for LM5026MTX+

Related keywords

LM5026MTX+ datasheet
LM5026MTX+ data sheet
LM5026MTX+ pdf datasheet
LM5026MTX+ component
LM5026MTX+ part
LM5026MTX+ distributor
LM5026MTX+ RoHS
LM5026MTX+ datasheet download