LT3482EUD Ver la hoja de datos (PDF) - Linear Technology
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LT3482EUD Datasheet PDF : 12 Pages
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LT3482
TYPICAL APPLICATIO S
5V to 85V APD Bias Power Supply
VIN
5V
OFF ON
L1
10µH
C2
0.1µF
C1
SW
PUMP
1µF
VIN
MONIN
fSET LT3482
SHDN
CTRL
GND
VOUT2
VOUT1
FB
C4
0.47µF
C5
0.47µF
MON
APD 85V
AT 2.5mA
C7
R3
10nF
10k
C3
0.1µF
C1: MURATA X7R GRM21BR71C105KA01B
C2: AVX 06035C104KAT2A
C3, C6: AVX 08051C104KAT2A
C4, C5: MURATA X7R GRM31MR71H474KA01B
C7: MURATA GRM2167U1H103JA01B
L1: COILCRAFT ME3220-103KL OR EQUIVALENT
C6
R1
0.1µF 1M
R2
14k
3482 TA02a
Efficiency
60
50
40
30
20
10
0
0 0.5
1 1.5 2 2.5
IMONIN (mA)
3 3.5
3482 TA02b
3.3V to 70V APD Bias Power Supply with Fast Current Monitor Response
Efficiency
VIN
3.3V
OFF ON
10
L1
6.8µH
C2
0.1µF
C1
SW
PUMP
1µF
VIN
MONIN
fSET LT3482
SHDN
VOUT2
CTRL
GND
VOUT1
FB
C4
0.47µF
C5
0.47µF
R1
100Ω
C6
R2
0.1µF 1M
C3
0.1µF
MON
R4
10k
APD
70V
AT 2mA
C1: MURATA X7R GRM21BR71C105KA01B
C2: AVX 06035C104KAT2A
C3, C6: AVX 08051C104KAT2A
C4, C5: MURATA X7R GRM31MR71H474KA01B
L1: COILCRAFT ME3220-682ML OR EQUIVALENT
R3
16.5k
3482 TA03a
APD Input Load for Current Monitor
Step Response Measurement
2 APD
NODE A
10k
5V
0V
2k 2mA
0mA
60
50
40
30
20
10
0
0 0.5
1
1.5
IMONIN (mA)
2
2.5
3482 TA03b
Current Monitor Step Response
VMON
2V/DIV
REF GND
VNODE A
20V/DIV
REF GND
500ns/DIV
3482 TA03c
3482fa
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