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LM3671TL-3.3 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de pieza LM3671TL-3.3
Descripción Electrónicos  2MHz, 600mA Step-Down DC-DC Converter
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM3671TL-3.3 Datasheet(HTML) 3 Page - National Semiconductor (TI)

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20108462
FIGURE 5. 6-Pin LLP Package Number LCA06B (2mm x 2mm x 0.6mm)
Pin Descriptions (SOT23-5)
Pin #
Name
Description
1
V
IN
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 Micro SMD)
Pin #
Name
Description
A1
V
IN
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 LLP)
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
V
IN
Power supply input. Connect to the input filter capacitor ().
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.
3
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