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LM3670MFX-ADJ Datasheet(PDF) 2 Page - Texas Instruments

No. de Pieza. LM3670MFX-ADJ
Descripción  LM3670 Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
Descarga  25 Pages
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Fabricante  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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LM3670MFX-ADJ Datasheet(HTML) 2 Page - Texas Instruments

 
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VIN
1
GND
2
EN
3
FB
4
SW
5
1
2
5
4
3
VIN
SW
FB
EN
GND
L1: 4.7 µH or 10 µH
[A]
VOUT
COUT: 10 µF
CIN: 4.7 µF
LM3670
VIN
2.5V to 5.5V
C1
C2
R1
R2
LM3670
SNVS250E – NOVEMBER 2004 – REVISED FEBRUARY 2013
www.ti.com
DESCRIPTION (CONTINUED)
The LM3670 is available in a SOT-23-5 package. A high switching frequency - 1 MHz (typ) - allows use of tiny
surface-mount components. Only three external surface-mount components, an inductor and two ceramic
capacitors, are required.
Typical Application (continued)
A.
See Table 3
Figure 2. Adjustable Output Voltage
Connection Diagram
Figure 3. SOT-23-5 Package (Top View)
PIN DESCRIPTIONS
Pin #
Name
Description
1
VIN
Power supply input. Connect to the input filter capacitor (Figure 1).
2
GND
Ground pin.
3
EN
Enable input.
4
FB
Feedback analog input. Connect to the output filter capacitor (Figure 1).
5
SW
Switching node connection to the internal PFET switch and NFET synchronous rectifier. Connect to an
inductor with a saturation current rating that exceeds the 750 mA max. Switch Peak Current Limit
specification.
2
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Copyright © 2004–2013, Texas Instruments Incorporated
Product Folder Links: LM3670


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