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LM3414HVMRX Fiches technique(PDF) 3 Page - Texas Instruments

No de pièce LM3414HVMRX
Description  Common Anode-Capable Constant Current Buck LED Driver
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
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LM3414HVMRX Fiches technique(HTML) 3 Page - Texas Instruments

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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
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Product Folder Links: LM3414 LM3414HV


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