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LM2716MT-ADJ Arkusz danych(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Numer części LM2716MT-ADJ
Szczegółowy opis  Dual (Step-up and Step-down) PWM DC/DC Converter
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Producent  NSC [National Semiconductor (TI)]
Strona internetowa  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2716MT-ADJ Arkusz danych(HTML) 1 Page - National Semiconductor (TI)

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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
R
DSON (0.16
Ω and 0.12Ω) 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
Ω, internal switch
n
Adjustable boost converter with a 3.6A, 0.12
Ω, 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
20071201
February 2004
© 2004 National Semiconductor Corporation
DS200712
www.national.com


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