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LT1937 Datasheet(PDF) 9 Page - Linear Technology

Part # LT1937
Description  White LED Step-Up Converter in SC70 and ThinSOT
PDF  12 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1937 Datasheet(HTML) 9 Page - Linear Technology

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9
LT1937
1937f
TYPICAL APPLICATIO S
Li-Ion to Two White LEDs
Two LED Efficiency
VIN
SW
LT1937
L
22
µH
COUT
1
µF
CIN
1
µF
CIN: TAIYO YUDEN JMK107BJ105
COUT: AVX 0603ZD105
D: CENTRAL CMDSH2-3
L: MURATA LQH3C220
1937 TA05a
VIN
3V TO 5V
SHDN
R1
2
Ω
5k
90k
FB
D
VDC
DIMMING
GND
LED CURRENT (mA)
0
78
80
82
40
1937 TA05a
76
74
70
10
20
30
72
86
84
VIN = 3.6V
VIN = 3V
VIN
SW
LT1937
L
22
µH
COUT
0.22
µF
CIN
1
µF
CIN: TAIYO YUDEN JMK107BJ105
COUT: AVX 0603YD224
D: CENTRAL CMDSH-3
L: MURATA LQH3C220
1937 TA01a
VIN
3V TO 5V
SHDN
R1
4
Ω
5k
90k
FB
D
VDC
DIMMING
GND
LED CURRENT (mA)
0
60
65
70
75
80
85
90
VIN = 3V
510
15
20
1937 TA01b
VIN = 3.6V
Li-Ion to Three White LEDs
Three LED Efficiency



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