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LM3671MFX-1.5 Fiches technique(PDF) 3 Page - Texas Instruments

No de pièce LM3671MFX-1.5
Description  LM3671, LM3671Q 2MHz, 600mA Step-Down DC-DC Converter
Download  39 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

LM3671MFX-1.5 Fiches technique(HTML) 3 Page - Texas Instruments

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1
3
4
6
En
Pgnd
Vin
2
5
Sw
Sgnd
Fb
TOP VIEW
LM3671
LM3671Q
www.ti.com
SNVS294P – NOVEMBER 2004 – REVISED MAY 2013
Figure 5. 6-Pin USON Package
See Package Number NKH0006B (2 mm x 2 mm x 0.6 mm)
PIN DESCRIPTIONS (SOT-23)
Pin #
Name
Description
1
VIN
Power supply input. Connect to the input filter capacitor (Figure 1).
2
GND
Ground pin.
3
EN
Enable pin. The device is in shutdown mode when voltage to this pin is <0.4V and enabled
when >1.0V. Do not leave this pin floating.
4
FB
Feedback analog input. Connect directly to the output filter capacitor for fixed voltage
versions. For adjustable version external resistor dividers are required (Figure 2). The
internal resistor dividers are disabled for the adjustable version.
5
SW
Switching node connection to the internal PFET switch and NFET synchronous rectifier.
PIN DESCRIPTIONS (5-Bump DSBGA)
Pin #
Name
Description
A1
VIN
Power supply input. Connect to the input filter capacitor (Figure 1).
A3
GND
Ground pin.
C1
EN
Enable pin. The device is in shutdown mode when voltage to this pin is <0.4V and enabled
when >1.0V. Do not leave this pin floating.
C3
FB
Feedback analog input. Connect directly to the output filter capacitor for fixed voltage
versions. For adjustable version external resistor dividers are required (Figure 2). The
internal resistor dividers are disabled for the adjustable version.
B2
SW
Switching node connection to the internal PFET switch and NFET synchronous rectifier.
PIN DESCRIPTIONS (6-Pin USON)
Pin #
Name
Description
1
EN
Enable pin. The device is in shutdown mode when voltage to this pin is <0.4V and enabled
when >1.0V. Do not leave this pin floating.
2
Pgnd
Ground pin.
3
VIN
Power supply input. Connect to the input filter capacitor (Figure 1).
4
SW
Switching node connection to the internal PFET switch and NFET synchronous rectifier.
5
Sgnd
Singnal ground (feedback ground).
6
FB
Feedback analog input. Connect directly to the output filter capacitor for fixed voltage
versions. For adjustable version external resistor dividers are required (Figure 2). The
internal resistor dividers are disabled for the adjustable version.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Copyright © 2004–2013, Texas Instruments Incorporated
Submit Documentation Feedback
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Product Folder Links: LM3671 LM3671Q


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