LT3003EMSE-TRPBF 查看數據表（PDF） - Linear Technology
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LT3003EMSE-TRPBF Datasheet PDF : 16 Pages
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LT3003
TYPICAL APPLICATIONS
330mA Boost LT3003 with the LT3477
VIN
8V TO 16V
L1
4.7µH
D1
C1
1µF
13 14
25V
ISP1 ISN1
1
10 VIN
9 IADJ1
IADJ2
16 17
SW SW 6
FBN
18
NC
19
NC
20
NC
3
SHDN LT3477
11
ISP2
PWM
D2
1N4148W
7
FBP
8
5 VREF
VC
12
ISN2
R3
2 6.81k
RT
GND GND SS
Q1
2N7002
C2
22nF
15 21 4
C3
0.033µF
C1, C3: TAIYO YUDEN TMK212BJ105MG-BR
C4: MURATA GRM32ER71H475KA88L
D1: DIODES INC. DFLS140
L1: SUMIDA CDRH5D16-4R7
R5
1.15M
1%
R6
45.3k
1%
VOUT
C4
4.7µF
50V
R4
0.3Ω
1%
ILED
110mA PER STRING
6 to 8
LEDs PER STRING
3
LED1
6
PWM
2
LED2
1
LED3
4
VMAX
VOUT VIN
4V
7
5
OT1
LT3003
VIN
C3
1µF
25V
8
OT2
9
SHDN
GND
VEE
11
10
3003 TA03a
PWM Dimming
1000
ILED = 110mA PER STRING
NUMBER OF LEDS = 8 × 3 = 24
100
10
1
0.1
1
10
100
1000
PWM DIMMING RATIO
10000
3003 TA03b
Efficiency
100
95
ILED = 110mA PER STRING
NUMBER OF LEDS = 8 × 3 = 24
90
85
80
75
70
65
60
55
50
8 9 10 11 12 13 14 15 16
VIN (V)
3003 TA03b
3003fa
11
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