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參數(shù)資料
| 型號： | LX1745 |
| 廠商： | Microsemi Corporation |
| 元件分類： | LED驅(qū)動器 |
| 英文描述： | Triple Output Boost ? LED Driver / LCD Bias |
| 中文描述： | 三路輸出升壓？ LED驅(qū)動器/ LCD偏置 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 439K |
| 代理商： | LX1745 |
LX1745
P
RODUCTION
D
ATASHEET
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 12
W
M
.
C
Triple Output Boost – LED Driver / LCD Bias
I N T E G R A T E D P R O D U C T S
Copyright
2000
Rev. 1.1a, 2004-02-06
EVALUATION BOARD
Table 3: Jumper Position Assignments
Jumper
Position
Function
JU1
JU2
JU3
N/A
N/A
N/A
Remove the factory installed jumper and insert a 4~6cm wire loop
(optional) to observe the inductor current waveform using a current
probe.
JU4
N/A
Remove jumper to test open-circuit over-voltage protection implemented
with R1 and R2
Note: All pins are referenced to ground.
Table 4: Factory Installed Component List
Part Description
CAPACITOR, 4.7
μ
F, 1210, 6.3V
CAPACITOR, 4.7
μ
F, 1210, 35V
CAPACITOR, 1000pF, 0805, 35V
CAPACITOR, (SPARE), See Note 1
Ref
C1
C2, C5, C6
C3, C7, C8
C4, C11
C9, C10, C12,
C13
CCR1, CR2,
LED1, LED2,
LED3, LED4
L1, L2, L3
INDUCTOR, 47
μ
H, 480mA, SMT
Q1
FDV303N MOSFET, 30V, SOT-23
R1, R5
RESISTOR, 1M, 1/16W, 0805
R2, R6, R8
RESISTOR, 75K, 1/16W, 0805
R3
RESISTOR, 15, 1/16W, 0805
R4
RESISTOR, 4.02K, 1/16W, 0805
R7
RESISTOR, 1.25M, 1/16W, 0805
R9, R10, R11
RESISTOR, 10K, 1/16W, 0805
R12, R13
RESISTOR, 100K, 1/16W, 0805
U1
Microsemi LX1745CPW BOOST CONTROLLER
CAPACITOR, 1
μ
F, 0805, 35V
Microsemi UPWLEDxx, LED, Optomite
Notes
1.
Use these locations to insert additional input and/or output capacitance.
A
P
P
L
I
C
A
T
I
O
N
S
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