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FAN5343 Arkusz danych(PDF) 3 Page - Fairchild Semiconductor |
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FAN5343 Arkusz danych(HTML) 3 Page - Fairchild Semiconductor |
3 / 11 page © 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN5343 • Rev. 1.0.4 3 Pin Configuration P1 GND 4 3 2 1 5 6 GND SW FB VOUT VIN EN Figure 3. UMLP6 Package (Top View) Pin Definitions Pin # Name Description 1 VOUT Boost Output Voltage . Output of the boost regulator. Connect the LEDs to this pin. Connect COUT to GND. 2 VIN Input Voltage . Connect to power source and decouple with CIN to GND. 3 EN Enable Brightness Control . Program dimming levels by driving this pin with digital pulses. 4 FB Voltage Feedback . The boost regulator regulates this pin to 0.25V to control the LED string current. Tie this pin to a current setting resistor (RSET) between GND and the cathode of the LED string. 5 SW Switching Node . Tie inductor L1 from the VIN to SW pin. 6 GND Ground . Tie directly to a GND plane. |
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