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LM3671MF-ADJ Scheda tecnica(PDF) 1 Page - Texas Instruments

Il numero della parte LM3671MF-ADJ
Spiegazioni elettronici  LM3671, LM3671Q 2MHz, 600mA Step-Down DC-DC Converter
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo TI1 - Texas Instruments

LM3671MF-ADJ Scheda tecnica(HTML) 1 Page - Texas Instruments

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1
2
5
4
3
VIN
SW
FB
EN
GND
L1: 2.2 PH
VOUT
COUT
10 PF
CIN
4.7 PF
LM3671
VIN
2.7V to 5.5V
LM3671
LM3671Q
www.ti.com
SNVS294P – NOVEMBER 2004 – REVISED MAY 2013
LM3671, LM3671Q 2MHz, 600mA Step-Down DC-DC Converter
Check for Samples: LM3671, LM3671Q
1
FEATURES
APPLICATIONS
2
16 µA Typical Quiescent Current
Mobile Phones
600 mA Maximum Load Capability
PDAs
2 MHz PWM Fixed Switching Frequency (typ.)
MP3 Players
Automatic PFM/PWM Mode Switching
W-LAN
Internal Synchronous Rectification for High
Portable Instruments
Efficiency
Digital Still Cameras
Internal Soft start
Portable Hard Disk Drives
0.01 µA Typical Shutdown Current
Automotive
Operates from a Single Li-Ion Cell Battery
DESCRIPTION
Only Three Tiny Surface-Mount External
The
LM3671
step-down
DC-DC
converter
is
Components Required (One Inductor, Two
optimized for powering low voltage circuits from a
Ceramic Capacitors)
single Li-Ion cell battery and input voltage rails from
Current Overload and Thermal Shutdown
2.7V to 5.5V. It provides up to 600 mA load current,
Protection
over the entire input voltage range. There are several
Available in Fixed Output Voltages and
different fixed voltage output options available as well
Adjustable Version
as an adjustable output voltage version range from
1.1V to 3.3V.
LM3671Q is an Automotive Grade Product that
is AEC-Q100 Grade 1 Qualified
The device offers superior features and performance
for mobile phones and similar portable systems.
SOT-23, 5-Bump DSBGA and 6-Pin USON
Automatic intelligent switching between PWM low-
Packages
noise and PFM low-current mode offers improved
system control. During PWM mode, the device
operates at a fixed-frequency of 2 MHz (typ.).
Hysteretic PFM mode extends the battery life by
reducing the quiescent current to 16 µA (typ.) during
light
load
and
standby
operation.
Internal
synchronous rectification provides high efficiency
during PWM mode operation. In shutdown mode, the
device turns off and reduces battery consumption to
0.01 µA (typ.).
TYPICAL APPLICATION CIRCUITS
Figure 1. Typical Application Circuit
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2004–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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