LT1932 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT1932' PDF : 16 Pages View PDF
LT1932
TYPICAL APPLICATIO S
VIN
1.8V TO 3V
2-Cell Driver for Four White LEDs
L1
4.7µH
D1
C1
4.7µF
PWM
DIMMING
CONTROL
6
1
VIN
SW
LT1932
5
SHDN
3
LED
RSET
GND
15mA
4
2
RSET
1.50k
C1: TAIYO YUDEN JMK212BJ475
C2: TAIYO YUDEN EMK212BJ105
D1: ZETEX ZHCS400
L1: MURATA LQH3C4R7M24
(408) 573-4150
(408) 573-4150
(631) 543-7100
(814) 237-1431
C2
1µF
1932 TA07a
VIN
2V TO 3V
2-Cell Driver for Five White LEDs
L1
4.7µH
D1
C1
4.7µF
PWM
DIMMING
CONTROL
6
1
VIN
SW
LT1932
5
SHDN
3
LED
RSET
GND
4
2
RSET
1.50k
C1: TAIYO YUDEN JMK212BJ475
C2: TAIYO YUDEN TMK316BJ105
D1: ZETEX ZHCS400
L1: MURATA LQH3C4R7M24
15mA
(408) 573-4150
(408) 573-4150
(631) 543-7100
(814) 237-1431
C2
1µF
1932 TA05a
Efficiency
85
80
VIN = 3V
75
VIN = 1.8V
70
65
60
55
0
5
10
15
20
LED CURRENT (mA)
1932 TA07b
Efficiency
85
80
75
VIN = 3V
70
VIN = 2V
65
60
55
0
5
10
15
20
LED CURRENT (mA)
1932 TA05b
1932f
12
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