Datasheet

LT3496
14
3496ff
3000:1 PWM Dimming at 120Hz
PWM
5V/DIV
I
L
0.5A/DIV
I
LED
0.1A/DIV
0.5µs/DIV
3496 TA03b
typical applications
Triple Boost 100mA × 10 LED Driver
Efficiency vs PWM Duty Cycle
10 LEDs
C2
1µF
C3
1µF
C4
1µF
PV
IN
12V
100mA
825k
20k
OVP1
LED1
TG1
1Ω
470pF
3496 TA03a
L1
10µH
L2
10µH
L3
10µH
CAP1
D1 D2 D3
M1 M2 M3
SW1 SW2
LT3496
GND
SW3
TG1, TG2, TG3
OVP1, OVP2, OVP3
VC1, VC2, VC3
V
REF
f
ADJ
CTRL1, CTRL2, CTRL3
CAP1, CAP2, CAP3
LED1, LED2, LED3
V
IN
PWM1, PWM2, PWM3
SHDN
PWM1, PWM2, PWM3
SHDN
V
IN
3V
C1: MURATA GRM31MR71C225KA35
C2-C5: MURATA GRM31MR71H105KA88
D1-D3: DIODES DFLS160
L1-L3: TAIYO YUDEN NP04SZB 100M
M1-M3: ZETEX ZXMP6A13F
C5
1µF
10 LEDs
100mA
825k
20k
OVP2
LED2
TG2
1Ω
CAP2
10 LEDs
100mA
825k
20k
OVP3
10k
LED3
TG3
1Ω
CAP3
C1
2.2µF
PWM DUTY CYCLE (%)
0
50
EFFICIENCY (%)
55
65
70
75
40
80
100
95
3496 TA03d
60
20 60
80
85
90
CTRL = 2V