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LM3475MF Datasheet

  • LM3475MF

  • Hysteretic PFET Buck Controller

  • 14頁

  • NSC

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LM3475 Hysteretic PFET Buck Controller
October 2004
LM3475
Hysteretic PFET Buck Controller
General Description
The LM3475 is a hysteretic P-FET buck controller designed
to support a wide range of high efficiency applications in a
very small SOT23-5 package. The hysteretic control scheme
has several advantages, including simple system design
with no external compensation, stable operation with a wide
range of components, and extremely fast transient re-
sponse. Hysteretic control also provides high efficiency op-
eration, even at light loads. The PFET architecture allows for
low component count as well as 100% duty cycle and ultra-
low dropout operation.
Features
n
n
n
n
n
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n
Easy to use control methodology
0.8V to V
IN
adjustable output range
High Efficiency (90% typical)
鹵
0.9% (
鹵
1.5% over temp) feedback voltage
100% duty cycle capable
Maximum operating frequency up to 2MHz
Internal Soft-Start
Enable pin
SOT23-5 package
Applications
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TFT Monitor
Auto PC
Vehicle Security
Navigation Systems
Notebook Standby Supply
Battery Powered Portable Applications
Distributed Power Systems
Typical Application Circuit
20070101
漏 2004 National Semiconductor Corporation
DS200701
www.national.com

LM3475MF 產(chǎn)品屬性

  • National Semiconductor (TI)

  • 2.7 V to 10 V

  • 0.8 V to 10 V

  • 5 A

  • 1

  • + 125 C

  • SMD/SMT

  • SOT-23

  • - 40 C

  • Reel

  • 1000

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