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LM3673 데이터시트(PDF) 3 Page - Texas Instruments

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부품명 LM3673
상세설명  2-MHz, 350-mA Step-Down DC-DC Converter
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제조업체  TI [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI - Texas Instruments

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A3
A1
C1
A3
C3
EN
FB
SW
GND
VIN
EN
GND
SW
FB
B2
VIN
A1
C3
C1
B2
LM3673
www.ti.com
SNVS434L – JULY 2006 – REVISED OCTOBER 2015
5 Voltage Options
ORDERABLE NUMBER(1)(2)
VOLTAGE OPTION
LM3673TL-ADJ/NOPB
ADJ
LM3673TLX-ADJ/NOPB
LM3673TL-1.2/NOPB
1.2
LM3673TLX-1.2/NOPB
LM3673TL-1.5/NOPB
1.5
LM3673TLX-1.5/NOPB
LM3673TL-1.8/NOPB
1.8
LM3673TLX-1.8/NOPB
(1)
For the most current package and ordering information, see the Package Option Addendum at the end
of this document, or see the TI web site at www.ti.com.
(2)
Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
6 Pin Configuration and Functions
YZR Package
5-Pin DSBGA
Top (Left) and Bottom (Right) Views
Pin Functions
PIN
I/O
DESCRIPTION
NUMBER
NAME
A1
VIN
Power
Power supply input. Connect to the input filter capacitor (Figure 17).
A3
GND
Ground
Ground pin
B2
SW
Analog
Switching node connection to the internal PFET switch and NFET synchronous rectifier.
Enable pin. The device is in shutdown mode when voltage to this pin is < 0.4 V and enabled
C1
EN
Input
when > 1 V. Do not leave this pin floating.
Feedback analog input. Connect directly to the output filter capacitor for fixed voltage versions.
C3
FB
Analog
For adjustable version external resistor dividers are required (Figure 18). The internal resistor
dividers are disabled for the adjustable version.
Copyright © 2006–2015, Texas Instruments Incorporated
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