Connectors and Test Pins

30127102

FIGURE 2. Typical Connection Diagram

Evaluation Board Quick Setup Procedures

Terminal Designation

Description

VIN

Power supply positive (+ve) connection

PGND

Power supply negative (-ve) connection

AGND

LM3464 analog signal ground

LED1

Output Channel 1 (Connect to cathode of LED string 1)

LED2

Output Channel 2 (Connect to cathode of LED string 2)

LED3

Output Channel 3 (Connect to cathode of LED string 3)

LED4

Output Channel 4 (Connect to cathode of LED string 4)

EN

LM3464 enable pin (pull down to disable)

VFB

Connect to voltage feedback node of primary power supply for DHC

FAULTb

Acknowledgement signal for arising of ‘FAULT’

DIM

PWM dimming signal input (TTL signal compatible)

SYNC

Synchronization signal for cascade operation

THM+

Connect to NTC thermal sensor for thermal foldback control

THM-

Connect to NTC thermal sensor for thermal foldback control

VLEDFB

Connected to LM3464 VLedFB pin

OUTP

Connected to LM3464 OutP pin

VCC

LM3464 internal voltage regulator output

VDHC

Connected to LM3464 VDHC pin

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