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LT3496
TYPICAL APPLICATIONS
Triple Boost 100mA × 10 LED Driver
PV IN
12V
L1
10μH
D1
C1
2.2μF
L2
10μH
D2
L3
10μH
D3
C2
1μF
1
CAP1
C3
1μF
1
CAP2
C4
1μF
1
CAP3
LED1
LED2
LED3
TG1
M1
TG2
M2
TG3
M3
825k
825k
825k
10 LEDs
100mA
OVP1
20k
10 LEDs
100mA
OVP2
20k
10 LEDs
100mA
OVP3
20k
SW1
CAP1, CAP2, CAP3
SW2
SW3
TG1, TG2, TG3
OVP1, OVP2, OVP3
V IN
3V
C5
1μF
PWM1, PWM2, PWM3
SHDN
LED1, LED2, LED3
V IN
PWM1, PWM2, PWM3
SHDN
LT3496
GND
VC1, VC2, VC3
V REF
f ADJ
CTRL1, CTRL2, CTRL3
10k
470pF
C1: MURATA GRM31MR71C225KA35
C2-C5: MURATA GRM31MR71H105KA88
D1-D3: DIODES DFLS160
L1-L3: TAIYO YUDEN NP04SZB 100M
M1-M3: ZETEX ZXMP6A13F
3000:1 PWM Dimming at 120Hz
95
Efficiency vs PWM Duty Cycle
CTRL = 2V
3496 TA03a
PWM
5V/DIV
I L
0.5A/DIV
I LED
0.1A/DIV
90
85
80
75
70
65
60
55
0.5μs/DIV
3496 TA03b
50
0
20
40
60
80
100
PWM DUTY CYCLE (%)
3496 TA03d
3496ff
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