LT3465/LT3465A
PI FU CTIO S
V OUT (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 V CTRL is greater
than about 1.8V, full-scale LED current is generated.
When V CTRL is less than 1V, LED current is reduced.
Floating this pin places the device in shutdown mode.
V IN (Pin 5): Input Supply Pin. Must be locally bypassed
with a 1 μ F X5R or X7R type ceramic capacitor.
SW (Pin 6): Switch Pin. Connect inductor here.
? 200 mV ?
? 26 mV ? ?
? ? exp ?
? 200 mV – 26 mV ? 1 n ?
? V CTRL ( ) ?
R FB ?
?
?
? 5 mV ? 26 mV ? ?
? expp ?
+ 1 ? ? for V CTRL > 150 mV
I LED =
1
?
? ?
? ?
mV
? ?
? ?
? ?
? ?
? ?
3465afa
5
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