LT3465 datasheet(5/16 Pages) LINER

Part #	LT3465

Description	1.2MHz/2.4MHz White LED Drivers with Built-in Schottky in ThinSOT

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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5 / 16 page

LT3465/LT3465A

5

3465afa

PI FU CTIO S

VOUT (Pin 1): Output Pin. Connect to output capacitor and

LEDs. Minimize trace between this pin and output capaci-

tor to reduce EMI.

GND (Pin 2): Ground Pin. Connect directly to local ground

plane.

FB (Pin 3): Feedback Pin. Reference voltage is 200mV.

Connect LEDs and a resistor at this pin. LED current is

determined by the resistance and CTRL pin voltage:

CTRL (Pin 4): Dimming Control and Shutdown Pin. Ground

this pin to shut down the device. When VCTRL is greater

than about 1.8V, full-scale LED current is generated.

When VCTRL is less than 1V, LED current is reduced.

Floating this pin places the device in shutdown mode.

VIN (Pin 5): Input Supply Pin. Must be locally bypassed

with a 1

µF X5R or X7R type ceramic capacitor.

SW (Pin 6): Switch Pin. Connect inductor here.

I

R

mV

n

mV

LED

FB

=

⎛

⎝⎜

⎞

⎠⎟

1

200

26

1

200

26

•–

•

exp

p

•

VmV

mV

CTRL

()

⎛

⎝⎜

⎞

⎠⎟

+

⎛

⎝

⎜

⎞

⎠

⎟

⎛

⎝

⎜

526

1

⎜⎜

⎜

⎞

⎠

⎟

>

for V

mV

CTRL

150

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