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LM3414 Datasheet(PDF) 3 Page - Texas Instruments |
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LM3414 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 30 page VIN LX DIM FS PGND IADJ GND VCC 2 3 4 1 7 6 5 8 EP VIN LX DIM FS PGND IADJ GND VCC 1 2 3 4 8 7 6 5 EP LM3414, LM3414HV www.ti.com SNVS678F – JUNE 2010 – REVISED NOVEMBER 2015 5 Pin Configuration and Functions DDA Package NGQ Package 8-Pin SOIC 8-Pin WSON Top View Top View Pin Functions PIN I/O DESCRIPTION NAME NO. Internal Regulator Output Pin. This pin should be bypassed to ground by a ceramic capacitor VCC 1 O with a minimum value of 1 µF. Power Ground Pin. Ground for power circuitry. Reference point for all stated voltages. Must PGND 2 — be externally connected to EP and GND. Average Output Current Adjustment Pin. Connect resistor RIADJ from this pin to ground to IADJ 3 I adjust the average output current. Analog Ground Pin. Analog ground connection for internal circuitry, must be connected to GND 4 — PGND external to the package. Switching Frequency Setting Pin. Connect resistor RFS from this pin to ground to set the FS 5 I switching frequency. PWM Dimming Control Pin. Apply logic level PWM signal to this pin controls the intend DIM 6 I brightness of the LED string. Drain of N-MOSFET Switch. Connect this pin to the output inductor and anode of the LX 7 O schottky diode. Input Voltage Pin. The input voltage should be in the range of 4.5 V to 42 V (LM3414) or 4.5 VIN 8 I V to 65 V (LM3414HV). Thermal Pad (Power Ground). Used to dissipate heat from the package during operation. EP EP — Must be electrically connected to PGND external to the package. Copyright © 2010–2015, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM3414 LM3414HV |
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