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LM3414SDX Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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LM3414SDX Datasheet(HTML) 3 Page - National Semiconductor (TI) |
3 / 20 page Pin Descriptions Pin(s) Name Description Application Information 1 VCC Internal Regulator Output Pin This pin should be bypassed to ground by a ceramic capacitor with a minimum value of 1µF. 2 PGND Power Ground Pin Ground for power circuitry. Reference point for all stated voltages. Must be externally connected to EP and GND. 3 IADJ Average Output Current Adjustment Pin Connect resistor R IADJ from this pin to ground to adjust the average output current. 4 GND Analog Ground Pin Analog ground connection for internal circuitry, must be connected to PGND external to the package. 5 FS Switching Frequency Setting Pin Connect resistor R FS from this pin to ground to set the switching frequency. 6 DIM PWM Dimming Control Pin Apply logic level PWM signal to this pin controls the intend brightness of the LED string. 7 LX Drain of N-MOSFET Switch Connect this pin to the output inductor and anode of the schottky diode. 8 VIN Input Voltage Pin The input voltage should be in the range of 4.5V to 42V (LM3414) or 4.5V to 65V (LM3414HV). EP EP Thermal Pad (Power Ground) Used to dissipate heat from the package during operation. Must be electrically connected to PGND external to the package. 3 www.national.com |
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