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LM3414SDX Datasheet(PDF) 2 Page - Texas Instruments |
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LM3414SDX Datasheet(HTML) 2 Page - Texas Instruments |
2 / 25 page VIN LX DIM FS PGND IADJ GND VCC 1 2 3 4 8 7 6 5 EP Top View 8-Lead Plastic SOIC-8 Package Number DDA VIN LX DIM FS PGND IADJ GND VCC Top View 8-Lead Plastic WSON-8 Package Number NGQ 2 3 4 1 7 6 5 8 EP LM3414, LM3414HV SNVS678E – JUNE 2010 – REVISED MAY 2013 www.ti.com Connection Diagram PIN DESCRIPTIONS Pin 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 Connect resistor RIADJ from this pin to ground to adjust the average output current. Adjustment Pin 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 RFS 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. These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Absolute Maximum Ratings (LM3414) (1) VIN to GND -0.3V to 42V VIN to GND (Transient) 45V (500 ms) LX to PGND -0.3V to 42V LX to PGND (Transient) -3V(2 ns) to 45V (500 ms) FS, IADJ to GND -0.3V to 5V DIM to GND -0.3V to 6V ESD Rating. Human Body Model(2) 2kV Storage Temp. Range -65°C to 125°C Soldering Information Lead Temperature (Soldering 10s) 260°C Infrared/Convection Reflow (20sec) 235°C (1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device is intended to be functional. For ensured specifications and test conditions, see the Electrical Characteristics. (2) The human body model is a 100pF capacitor discharged through a 1.5 k Ω resistor into each pin. 2 Submit Documentation Feedback Copyright © 2010–2013, Texas Instruments Incorporated Product Folder Links: LM3414 LM3414HV |
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