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LM2700 Scheda tecnica(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Il numero della parte LM2700
Spiegazioni elettronici  600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter
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Produttore elettronici  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2700 Scheda tecnica(HTML) 1 Page - National Semiconductor (TI)

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LM2700
600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter
General Description
The LM2700 is a step-up DC/DC converter with a 3.6A,
80m
Ω internal switch and pin selectable operating fre-
quency. With the ability to produce 500mA at 8V from a
single Lithium Ion battery, the LM2700 is an ideal part for
biasing LCD displays. The LM2700 can be operated at
switching frequencies of 600kHz and 1.25MHz allowing for
easy filtering and low noise. An external compensation pin
gives the user flexibility in setting frequency compensation,
which makes possible the use of small, low ESR ceramic
capacitors at the output. The LM2700 features continuous
switching at light loads and operates with a switching quies-
cent current of 2.0mA at 600kHz and 3.0mA at 1.25MHz. The
LM2700 is available in a low profile 14-lead TSSOP package
or a 14-lead LLP package.
Features
n
3.6A, 0.08
Ω, internal switch
n
Operating input voltage range of 2.2V to 12V
n
Input undervoltage protection
n
Adjustable output voltage up to 17.5V
n
600kHz/1.25MHz pin selectable frequency operation
n
Over temperature protection
n
Small 14-Lead TSSOP or LLP package
Applications
n
LCD Bias Supplies
n
Handheld Devices
n
Portable Applications
n
GSM/CDMA Phones
n
Digital Cameras
Typical Application Circuit
20012301
600 kHz Operation
May 2004
© 2004 National Semiconductor Corporation
DS200123
www.national.com


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