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LM3671TLX-2.5 Scheda tecnica(PDF) 3 Page - National Semiconductor (TI) |
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LM3671TLX-2.5 Scheda tecnica(HTML) 3 Page - National Semiconductor (TI) |
3 / 24 page 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 www.national.com |
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