LT3492 LINER [Linear Technology], LT3492 Datasheet - Page 16

• Manufacturer Part Number: LT3492
• Description: Triple Output LED Driver with 3000:1 PWM Dimming
• Manufacturer: LINER [Linear Technology]

LT3492
TYPICAL APPLICATIONS
16
3000:1 PWM Dimming at 100Hz for CH1 (Buck Mode)
0.5A/DIV
0.5A/DIV
5V/DIV
PWM
I
LED
I
L
10V TO 16V
V
IN
Triple LED Driver Driving LED Strings in Buck, Boost and Buck-Boost Modes
1μs/DIV
ISP1-3
ISN1-3
V
PWM1-3
SHDN
IN
TG1
3000:1 PWM Dimming at 100Hz for CH3 (Buck-Boost Mode)
2 LEDs
C1
3.3μF
3
C1: MURATA GRM55DR71H335KA0193
C2: MURATA GRM21BR71H474KA88
C3, C5: MURATA GRM31MR71H105KA88
C4: MURATA GRM21BR71H104KA01B
D1: DIODES DFLS130
D2, D3: ROHM RB160M-60
6.8μH
0.1A/DIV
0.5A/DIV
L1
5V/DIV
SW1
PWM
I
3492 TA05b
LED
M1
330mΩ
I
L
0.3A
0.47μF
ISP1
ISN1
C2
D1
SW2
10 LEDs
TG2
1μF
C3
22μH
1μs/DIV
L2
LT3492
GND
M2
1Ω
D2
0.1A
ISP2
ISN2
L1: TDK VLF5014AT-6R8MR99
L2: TDK VLF5014AT-229MR62
L3: TDK VLF5014AT-330MR50
M1: ZETEX ZXMP3A13F
M2, M3 ZETEX ZXMP6A13F
3000:1 PWM Dimming at 100Hz for CH2 (Boost Mode)
0.1A/DIV
0.5A/DIV
825k
20k
5V/DIV
PWM
OVP2
I
3492 TA05d
LED
33μH
I
L
L3
SW3
TG3
4 LEDs
ISN3
ISP3
D3
0.1μF
C4
M3
1Ω
CTRL1-3
0.1A
OVP2-3
1μs/DIV
V
TG1-3
V
3.9M
IN
FADJ
OVP1
V
C1-3
REF
C5
1μF
100k
150k
49.9k
1.3MHz
OVP3
3492 TA05c
18.2k
3492 TA05
2.2nF
3492f