LT1937 데이터 시트보기 (PDF) - Linear Technology
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LT1937 Datasheet PDF : 12 Pages
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LT1937
TYPICAL APPLICATIO S
Li-Ion to Five White LEDs
VIN
3V TO 5V
L
22µH
D
CIN
1µF
VDC
DIMMING
VIN
SW
LT1937
SHDN
FB
GND
90k
5k
R1
4Ω
CIN: TAIYO YUDEN JMK107BJ105
COUT: TAIYO YUDEN GMK212BJ224
D: CENTRAL CMDSH-3
L: MURATA LQH3C220
COUT
0.22µF
1937 TA03a
Five LED Efficiency
85
80
VIN = 3V
75
VIN = 3.6V
70
65
0
2
4
6 8 10 12
LOAD CURRENT (mA)
1937 TA03b
5V to Seven White LEDs
VIN
5V
CIN
1µF
L
22µH
D
VDC
DIMMING
VIN
SW
LT1937
SHDN
FB
GND
90k
5k
R1
4Ω
CIN: TAIYO YUDEN JMK107BJ105
COUT: TAIYO YUDEN GMK212BJ224
D: CENTRAL CMDSH-3
L: MURATA LQH3C220
COUT
0.22µF
1937 TA04a
Seven LED Efficiency
85
80
75
70
65
0
5
10
LOAD CURRENT (mA)
15
1937 TA04b
1937f
10
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