Datasheet

LT3497
15
3497f
TYPICAL APPLICATIONS
Li-Ion to 2/2 White LEDs
Conversion Effi ciency
SW1 V
IN
LT3497
GND
SW2
L2
10µH
R
SENSE2
10Ω
C1, C2: TAIYO YUDEN GMK212BJ105KG
C3: TAIYO YUDEN LMK212BJ105MG
L1, L2: MURATA LQH32CN100K53
R
SENSE1
10Ω
C3
1µF
C1
1µF
C2
1µF
3497 TA12a
V
IN
3V TO 5V
L1
10µH
CAP1 CAP2
LED1 LED2
CTRL1
SHUTDOWN
AND DIMMING
CONTROL 1
SHUTDOWN
AND DIMMING
CONTROL 2
CTRL2
OFF ON
OFF ON
Li-Ion to 2/2 White LEDs
Conversion Effi ciency
SW1 V
IN
LT3497
GND
SW2
L2
10µH
R
SENSE1
10Ω
R
SENSE2
10Ω
C3
1µF
C2
1µF
C1, C2: TAIYO YUDEN GMK212BJ105KG
C3: TAIYO YUDEN LMK212BJ105MG
L1, L2: MURATA LQH32CN100K53
C1
1µF
3497TA13a
3V TO 5V
L1
10µH
CAP1 CAP2
LED1 LED2
CTRL1 CTRL2
SHUTDOWN
AND DIMMING
CONTROL 1
SHUTDOWN
AND DIMMING
CONTROL 2
OFF ON
OFF ON
LED CURRENT (mA)
0
40
EFFICIENCY (%)
45
50
55
60
65
70
5101520
3497 TA12b
V
IN
= 3.6V
2/2 LEDs
LED CURRENT (mA)
0
EFFICIENCY (%)
60
65
70
20
3497 TA13b
55
50
40
5
10
15
45
80
V
IN
= 3.6V
2/2LEDs
75