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LT3909 Datasheet(PDF) 4 Page - Linear Technology

Part # LT3909
Description  2-String 횞 50mA, 2MHz Step-Up LED Driver
PDF  8 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3909 Datasheet(HTML) 4 Page - Linear Technology

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4
dc2176af
DEMO MANUAL DC2176A
Quick start proceDure
Figure 3. Total Output Current ILED1 + ILED2 vs Input Voltage VIN with VLED1 = VLED2 = 35V. UVLO Occurs
at VIN = 5V Input Falling with 0.9V of Hysteresis
Figure 4. LED Current When Brightness is Reduced to a 1/20,000 Ratio by PWM Dimming at 100Hz
VIN (V)
0
5
90
70
50
80
60
40
30
20
10
0
25
15
35
DC2176a F03
40
20
10
30
VLED1 = VLED2 = 35V
DC2176a F04
500ns/DIV
VOUT
20V/DIV
ILED1
20mA/DIV
ILED2
20mA/DIV
VPWM
2V/DIV
VIN = 12V
VLED1 = VLED2 = 35V
ILED1 = ILED2 = 40mA



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