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LM2716MTX-ADJ fiches techniques PDF

National Semiconductor - Dual (Step-up and Step-down) PWM DC/DC Converter

Numéro de référence LM2716MTX-ADJ
Description Dual (Step-up and Step-down) PWM DC/DC Converter
Fabricant National Semiconductor 
Logo National Semiconductor 





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LM2716MTX-ADJ fiche technique
February 2004
LM2716
Dual (Step-up and Step-down) PWM DC/DC Converter
General Description
The LM2716 is composed of two PWM DC/DC converters. A
buck (step-down) converter is used to generate a fixed out-
put voltage. A boost (step-up) converter is used to generate
an adjustable output voltage. Both converters feature low
RDSON (0.16and 0.12) internal switches for maximum
efficiency. Operating frequency can be adjusted anywhere
between 300kHz and 600kHz allowing the use of small
external components. External soft-start pins for each en-
ables the user to tailor the soft-start times to a specific
application. Each converter may also be shut down indepen-
dently with its own shutdown pin. The LM2716 is available in
a low profile 24-lead TSSOP package.
Features
n Fixed buck converter with a 1.8A, 0.16, internal switch
n Adjustable boost converter with a 3.6A, 0.12, internal
switch
n Adjustable boost output voltage up to 20V
n Operating input voltage range of 4V to 20V
n Input undervoltage protection
n 300kHz to 600kHz pin adjustable operating frequency
n Over temperature protection
n Small 24-Lead TSSOP package
n Patented current limit circuitry
Applications
n TFT-LCD Displays
n Handheld Devices
n Portable Applications
n Cellular Phones/Digital Camers
Typical Application Circuit
© 2004 National Semiconductor Corporation DS200712
20071201
www.national.com

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