VIN

FB

EN

RT

GND

SW

LM5002

VCC

COMP

+12V to +36V

+48V

LM5002

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SNVS496D – JANUARY 2007 – REVISED MARCH 2013

LM5002 High Voltage Switch Mode Regulator

Check for Samples: LM5002

1

FEATURES

DESCRIPTION

The LM5002 high voltage switch mode regulator

2

•

Integrated 75 Volt N-Channel MOSFET

features all of the functions necessary to implement

•

Ultra-Wide Input Voltage Range from 3.1V to

efficient high voltage Boost, Flyback, SEPIC and

75V

Forward converters, using few external components.

•

Integrated High Voltage Bias Regulator

This easy to use regulator integrates a 75 Volt N-

Channel MOSFET with a 0.5 Amp peak current limit.

•

Adjustable Output Voltage

Current mode control provides inherently simple loop

•

1.5% Output Voltage Accuracy

compensation

and

line-voltage

feed-forward

for

•

Current Mode Control with Selectable

superior rejection of input transients. The switching

Compensation

frequency is set with a single resistor and is

programmable up to 1.5MHz. The oscillator can also

•

Wide Bandwidth Error Amplifier

be synchronized to an external clock. Additional

•

Integrated Current Sensing and Limiting

protection features include: current limit, thermal

•

Integrated Slope Compensation

shutdown,

under-voltage

lockout

and

remote

shutdown capability. The device is available in both

•

85% Maximum Duty Cycle Limit

SOIC-8 and WSON-8 packages.

•

Single Resistor Oscillator Programming

•

Oscillator Synchronization Capability

Packages

•

Enable / Undervoltage Lockout (UVLO) Pin

•

SOIC-8

•

Thermal Shutdown

•

WSON-8 (4mm x 4mm)

Typical Application Circuit

Figure 1. Boost Regulator Application Schematic

1

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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

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PRODUCTION DATA information is current as of publication date.

Copyright © 2007–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.