LM5010AMH National Semiconductor, LM5010AMH Datasheet

LM5010AMH

Manufacturer Part Number

LM5010AMH

Description

IC,SMPS CONTROLLER,CURRENT-MODE,TSSOP,14PIN,PLASTIC

Manufacturer

National Semiconductor

Datasheets

1.LM5010AMH.pdf (18 pages)

2.LM5010AMH.pdf (17 pages)

3.LM5010AMH.pdf (17 pages)

Specifications of LM5010AMH

Rohs Compliant

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LM5010A

High Voltage 1A Step Down Switching Regulator

General Description

The LM5010A Step Down Switching Regulator is an en-

hanced version of the LM5010 with the input operating range

extended to 6V minimum. The LM5010A features all the func-

tions needed to implement a low cost, efficient, buck regulator

capable of supplying in excess of 1A load current. This high

voltage regulator integrates an N-Channel Buck Switch, and

is available in thermally enhanced LLP-10 and TSSOP-14EP

packages. The constant on-time regulation scheme requires

no loop compensation resulting in fast load transient re-

sponse and simplified circuit implementation. The operating

frequency remains constant with line and load variations due

to the inverse relationship between the input voltage and the

on-time. The valley current limit detection is set at 1.25A. Ad-

ditional features include: VCC under-voltage lock-out, thermal

shutdown, gate drive under-voltage lock-out, and maximum

duty cycle limiter.

Basic Step Down Regulator

201538

Features

■

Typical Applications

■

Package

■

Wide 6V to 75V Input Voltage Range

Valley Current Limiting At 1.25A

Programmable Switching Frequency Up To 1 MHz

Integrated 80V N-Channel Buck Switch

Integrated High Voltage Bias Regulator

No Loop Compensation Required

Ultra-Fast Transient Response

Nearly Constant Operating Frequency With Line and Load

Variations

Adjustable Output Voltage

2.5V, ±2% Feedback Reference

Programmable Soft-Start

Thermal shutdown

Non-Isolated Telecommunications Regulator

Secondary Side Post Regulator

Power SUpply for Automotive Electronics

LLP-10 (4 mm x 4 mm)

TSSOP-14EP

Both Packages Have Exposed Thermal Pad For Improved

Heat Dissipation

November 27, 2007

20153843

www.national.com

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