LM3464 Datasheet, PDF (3/33 Pages) National Semiconductor (TI) – 4 Channel LED Driver Evaluation Board

LM3464, LM3464A
www.ti.com
Pin
Name
19
DR1
20
SE4
21
GD4
22
PGND
23
GD3
24
SE3
25
GD2
26
SE2
27
GD1
28
SE1
EP
EP
SNVS652F – APRIL 2010 – REVISED MAY 2013
PIN DESCRIPTIONS (continued)
Description
Channel 1 drain sense input
Channel 4 sense input
Channel 4 gate driver output
Power Ground
Channel 3 gate driver output
Channel 3 sense input
Channel 2 gate driver output
Channel 2 sense input
Channel 1 gate driver output
Channel 1 sense input
Thermal Pad (Power Ground)
Application Information
This pin senses the drain voltage of the external MOSFET of channel 1 to
facilitate DHC operation and fault detection.
Connect to an external sense resistor to define the Channel 4 LED current.
Connect to the gate of external NMOS to control the channel 4 LED current.
Ground for power circuitry. Reference point for all stated voltages. Must be
externally connected to EP and AGND
Connect to the gate of external NMOS to control the channel 3 LED current.
Connect to an external sense resistor to define the Channel 3 LED current.
Connect to the gate of external NMOS to control the channel 2 LED current.
Connect to an external sense resistor to define the Channel 2 LED current.
Connect to the gate of external NMOS to control the channel 1 LED current.
Connect to an external sense resistor to define the Channel 1 LED current.
Used to dissipate heat from the package during operation. Must be electrically
connected to PGND external to the package.
Copyright © 2010–2013, Texas Instruments Incorporated
Product Folder Links: LM3464 LM3464A
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