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LT3791 Datasheet(PDF) 5 Page - Linear Technology

Part # LT3791
Description  Four-Switch Buck-Boost LED Driver Controller
PDF  8 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3791 Datasheet(HTML) 5 Page - Linear Technology

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5
dc1666af
DEMO MANUAL DC1666A
Quick start proceDure
Figure 2. DC1666A Efficiency with 25V LEDs at 2A
Figure 3. DC1666A 100Hz 50:1 PWM Dimming
Waveforms at 12VIN and 25VLED at 2A
INPUT VOLTAGE (V)
0
80
84
88
92
10
20
30
40
3791 TA02b
50
96
100
82
86
90
94
98
60
BUCK
BOOST
BUCK-BOOST
PWM
5V/DIV
IL1
2A/DIV
ILED
2A/DIV
50µs/DIV
3791 TA02c
Figure 4. DC1666A CTRL LED Current Foldback at Low VIN with UVLO Falling and Rising and OVLO
INPUT VOLTAGE (V)
UVLO
(FALLING)
TURN-ON
(RISING)
3
0
4
5
6
7
DC1666A F04
8
1.0
2.0
0.5
1.5
9
10 50
55
60
TURN-ON
(FALLING)
OVLO
(RISING)



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