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LT1737IGN Scheda tecnica(PDF) 28 Page - Linear Technology

Il numero della parte LT1737IGN
Spiegazioni elettronici  High Power Isolated Flyback Controller
PDF  28 Pages
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Produttore elettronici  LINER [Linear Technology]
Homepage  http://www.linear.com
Logo LINER - Linear Technology

LT1737IGN Scheda tecnica(HTML) 28 Page - Linear Technology

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LT1737
1737f
TYPICAL APPLICATIO S
VC
R1
0.025
Ω
M1
IRLZ34S
L1
15
µH
R2
2.7
Ω
5%
R10
51
Ω
5%
1737 F18
R7
100k
5%
R6
24k
5%
C6
47pF
50V
NPO
6
8
7
3
910
15
16
2
1
2
8
3
14
13
12
4
5
11
1
C5
4.7nF
50V
X7R
R5
33k
5%
R11
22k
5%
R12
24k
5%
C1: SANYO OS-CON (20SV150M)
C2A-B: TOKIN Y5V (IE226ZY5U-C505)
C3: SANYO POSCAP (16TPC33M)
D1: MOTOROLA 40V, 6A SCHOTTKY DIODE
R13
20k
5%
R4
3.01k
1%
R3
26.1k
1%
R8
160k
5%
R9
33k
5%
C4
1
µF
25V
Z5U
C1
150
µF
20V
VIN
L2
15
µH
C10
470pF
50V
X7R
C9
47pF
50V
NPO
C7
47pF
50V
NPO
OUT
U2
LT1121
ADJ
INP
GND
D1
MBRD640CT
+
C3
33
µF
16V
×4
C2A
22
µF
25V
C2B
22
µF
25V
+
R14
750
Ω
5%
VOUT = 12V
C8
0.1
µF
25V
Z5U
L1, L2: COILTRONICS UP4B-150 INDUCTOR
M1: INT’L RECTIFIER IRLZ34S 60V, 0.05
Ω LOGIC LEVEL N-CH MOSFET
R1: IRC 4
× 0.1Ω, 1W (LR2512)
PGND
ISENSE
GATE
FB
VCC
UVLO
3VOUT
SGND
RCMPC
ROCMP
MINENAB
LT1737
ENDLY
SFST
OSCAP
tON
Figure 18. 8V-16V to 12V Nonisolated Converter
0.01
60
70
80
90
0.1
1
10
1737 F19
50
40
30
20
ILOAD (A)
VIN = 8V
VIN = 16V
VIN = 12V
Figure 19. Efficiency vs ILOAD
PART NUMBER
DESCRIPTION
COMMENTS
LT1424-5
Isolated Flyback Switching Regulator
VIN = 3V to 20V, IQ = 7mA
LT1424-9
Isolated Flyback Switching Regulator
VIN = 3V to 20V, IQ = 7mA
LT1425
Isolated Flyback Switching Regulator
General Purpose with External Application Resistor
LT1533
Ultralow Noise 1A Switching Regulator
VIN = 2.7V to 23V, Reduced EMI and Switching Harmonics
LT1725
General Purpose Isolated Flyback Controller
Suitable for Telecom or Offline Input Voltage
LT1738
Ultra Low Noise DC/DC Controller
Reduced EMI and Switching Harmonics
RELATED PARTS
©LINEAR TECHNOLOGY CORPORATION 2000
LT/TP 0302 2K • PRINTED IN THE USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 q FAX: (408) 434-0507 q www.linear.com



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