Datasheet
10
LT1932
V
IN
SW
D1
15mA
1932 TA03a
L1
4.7µH
V
IN
1V TO 1.5V
LT1932
SHDN
C1, C2: TAIYO YUDEN JMK212BJ475 (408) 573-4150
D1: ZETEX ZHCS400 (631) 543-7100
L1: MURATA LQH3C4R7M24 (814) 237-1431
61
4
R
SET
1.50k
2.5V PWM
DIMMING
CONTROL
C1
4.7µF
C2
4.7µF
24.9k
2
35
LED
R
SET
GND
Single Cell Driver for One White LED
V
IN
SW
D1
15mA
1932 TA04a
L1
4.7µH
V
IN
1V TO 1.5V
LT1932
SHDN
C1: TAIYO YUDEN JMK212BJ475 (408) 573-4150
C2: TAIYO YUDEN LMK212BJ225 (408) 573-4150
D1: ZETEX ZHCS400 (631) 543-7100
L1: MURATA LQH3C4R7M24 (814) 237-1431
61
4
R
SET
1.50k
2.5V PWM
DIMMING
CONTROL
C1
4.7µF
C2
2.2µF
24.9k
2
35
LED
R
SET
GND
Single Cell Driver for Two White LEDs
Efficiency
Efficiency
LED CURRENT (mA)
0
50
EFFICIENCY (%)
55
60
65
70
75
80
510152.5 7.5 12.5
1932 TA03b
V
IN
= 1.5V
V
IN
= 1.1V
LED CURRENT (mA)
0
55
50
EFFICIENCY (%)
60
65
70
75
80
510152.5 7.5 12.5
1932 TA04b
V
IN
= 1.5V
V
IN
= 1.1V
TYPICAL APPLICATIO S
U