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LM3674MF-1.5 데이터시트(PDF) 1 Page - Texas Instruments

부품명 LM3674MF-1.5
상세설명  LM3674 2MHz, 600mA Step-Down DC-DC Converter in SOT-23
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제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI1 - Texas Instruments

LM3674MF-1.5 데이터시트(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
LM3674
VIN
2.7V to 5.5V
LM3674
www.ti.com
SNVS405F – DECEMBER 2005 – REVISED MAY 2013
LM3674 2MHz, 600mA Step-Down DC-DC Converter in SOT-23
Check for Samples: LM3674
1
FEATURES
DESCRIPTION
The
LM3674
step-down
DC-DC
converter
is
2
600mA Max Load Current
optimized for powering low voltage circuits from a
Input Voltage Range from 2.7V to 5.5V
single Li-Ion cell battery and input voltage rails from
Available in Fixed and Adjustable Output
2.7V to 5.5V. It provides up to 600mA load current,
Voltages Ranging from 1.0V to 3.3V
over the entire input voltage range. There are several
fixed output voltages and adjustable output voltage
Operates from a Single Li-Ion Cell Battery
versions.
Internal Synchronous Rectification for High
The device offers superior features and performance
Efficiency
for mobile phones and similar portable systems.
Internal Soft Start
During PWM mode, the device operates at a fixed-
0.01 µA Typical Shutdown Current
frequency of 2 MHz (typ). Internal synchronous
rectification provides high efficiency during Pulse
2 MHz PWM Fixed Switching Frequency (typ)
Width
Modulation
(PWM)
mode
operation.
In
5-Pin SOT-23 Package
shutdown mode, the device turns off and reduces
Current Overload Protection and Thermal
battery consumption to 0.01 µA (typ).
Shutdown Protection
The LM3674 is available in a 5-pin SOT-23 package
in leaded (PB) and lead-free (NO PB) versions. A
APPLICATIONS
high switching frequency of 2 MHz (typ) allows use of
Mobile Phones
only three tiny external surface-mount components,
an inductor and two ceramic capacitors.
PDAs
MP3 Players
Portable Instruments
W-LAN
Digital Still Cameras
Portable Hard Disk Drives
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 © 2005–2013, 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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