LM3674_15 Datasheet, PDF (3/26 Pages) Texas Instruments – LM3674 2-MHz, 600-mA Step-Down DC-DC Converter in SOT-23

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5 Pin Configuration and Functions
DBV Package
5-Pin SOT-23
Top View
SW
FB
5
4
LM3674
SNVS405G – DECEMBER 2005 – REVISED APRIL 2015
VIN
GND
EN
1
2
3
Note: The actual physical placement of the package marking will vary from part to part.
PIN
NAME NUMBER
EN
3
FB
4
GND
2
SW
5
V_IN
1
Pin Functions
TYPE
DESCRIPTION
Digital
Analog
Ground
Analog
Power
Enable input. The device is in shutdown mode when voltage to this pin is < 0.4 V and enable when > 1
V. Do not leave this pin floating.
Feedback analog input. Connect to the output filter capacitor, C_OUT, for fixed voltage versions. For
adjustable version, external resistor dividers are required (R₁ and R₂). The internal resistor dividers are
disabled for the adjustable version.
Ground pin
Switching node connection to the internal PFET switch and NFET synchronous rectifier.
Power supply input. Connect to the input filter capacitor, C_IN.
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