LT1932 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT1932' PDF : 16 Pages View PDF
LT1932
TYPICAL APPLICATIO S
VIN
2.7V TO 4.2V
Li-Ion Driver for Four White LEDs
L1
6.8µH
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: PANASONIC ELJEA6R8
(408) 573-4150
(408) 573-4150
(631) 543-7100
(714) 373-7334
C2
1µF
1932 TA10a
VIN
2.7V TO 4.2V
Li-Ion 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 TA11a
Efficiency
85
80
VIN = 4.2V
75
VIN = 2.7V
70
65
60
55
0
5
10
15
20
LED CURRENT (mA)
1932 TA10b
Efficiency
85
80
VIN = 4.2V
75
VIN = 2.7V
70
65
60
55
0
5
10
15
20
LED CURRENT (mA)
1932 TA11b
1932f
14
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