LT1932 查看數據表（PDF） - Linear Technology
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LT1932 Datasheet PDF : 16 Pages
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LT1932
TYPICAL APPLICATIO S
Single Cell Driver for One White LED
VIN
1V TO 1.5V
L1
4.7µH
D1
C1
4.7µF
2.5V PWM
DIMMING
CONTROL
6
1
VIN
SW
LT1932
5
SHDN
3
LED
RSET
GND
24.9k 4
2
RSET
1.50k
15mA
C1, C2: TAIYO YUDEN JMK212BJ475 (408) 573-4150
D1: ZETEX ZHCS400
(631) 543-7100
L1: MURATA LQH3C4R7M24
(814) 237-1431
C2
4.7µF
1932 TA03a
VIN
1V TO 1.5V
Single Cell Driver for Two White LEDs
L1
4.7µH
D1
C1
4.7µF
2.5V PWM
DIMMING
CONTROL
6
1
VIN
SW
LT1932
5
SHDN
3
LED
RSET
GND
15mA
24.9k 4
2
RSET
1.50k
C1: TAIYO YUDEN JMK212BJ475
C2: TAIYO YUDEN LMK212BJ225
D1: ZETEX ZHCS400
L1: MURATA LQH3C4R7M24
(408) 573-4150
(408) 573-4150
(631) 543-7100
(814) 237-1431
C2
2.2µF
1932 TA04a
Efficiency
80
75
VIN = 1.5V
70
VIN = 1.1V
65
60
55
50
0
2.5 5 7.5 10 12.5 15
LED CURRENT (mA)
1932 TA03b
Efficiency
80
75
VIN = 1.5V
70
VIN = 1.1V
65
60
55
50
0
2.5 5 7.5 10 12.5 15
LED CURRENT (mA)
1932 TA04b
1932f
10
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