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LTC3637 Datasheet(PDF) 21 Page - Linear Technology

Part # LTC3637
Description  76V, 1A Step-Down Regulator
PDF  26 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3637 Datasheet(HTML) 21 Page - Linear Technology

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LTC3637
21
3637fa
For more information www.linear.com/LTC3637
TYPICAL APPLICATIONS
24.5V to 76V Input to 24V Output with 350mA Input Current Limit
24.5V to 76V Input to 24V Output with 350mA Input Current Limit
Maximum Input and Load Current vs Input Voltage
Maximum Input and Load Current vs Input Voltage
4V to 64V Input to –12V Output Positive-to-Negative Regulator
Maximum Load Current vs Input Voltage
VFB
SW
L1
4.7µH
VIN
RUN
ISET
FBO
OVLO
COUT
22µF
R1
200k
D1
CIN
2.2µF
CIN: KEMET C1210C225M1RAC
COUT: AVX 1210YC226MAT
D1: AVX SD3220S100S5R0
L1: COOPER BUSSMANN DR7-4R7-R
VOUT
–12V
VIN
4V TO 63V
3637 TA03a
SS
VPRG1
VPRG2
GND
LTC3637
R2
147k
INPUT VOLTAGE (V)
0
0
200
400
600
800
1000
10
20
30
40
3637 TA03b
50
60
VOUT = –12V
MAXIMUM LOAD CURRENT ≈
VIN
VIN+|VOUT |
•
IPEAK
2
VFB
OVLO
SW
L1
22µH
VIN
RUN
ISET
COUT
10µF
CIN
1µF
R1
200k
D1
CIN: TAIYO YUDEN HMK325B7105MN
COUT: TDK C3225X7R1H106M
D1: DIODES INC. SBR3U100LP
L1: WÜRTH 7447714220
VOUT
24V
VIN
24.5V TO 76V
3637 TA04a
FBO
SS
VPRG1
VPRG2
GND
LTC3637
R2
53.6k
R3
806k
R4
11.5k
INPUT VOLTAGE (V)
25
600
800
1000
65
3637 TA04b
400
200
500
700
900
300
100
0
35
45
55
75
MAXIMUM
OUTPUT CURRENT
MAXIMUM
INPUT CURRENT
INPUT CURRENT LIMIT ≈ VOUT •
R4
R3
+R4
MAXIMUM LOAD CURRENT ≈
VIN
2
•
R4
R3
+R4



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