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MAX797C/D Datenblatt(PDF) 28 Page - Maxim Integrated Products

Teilenummer MAX797C/D
Bauteilbeschribung  Step-Down Controllers with Synchronous Rectifier for CPU Power
PDF  32 Pages
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Hersteller  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX797C/D Datenblatt(HTML) 28 Page - Maxim Integrated Products

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Step-Down Controllers with
Synchronous Rectifier for CPU Power
28
______________________________________________________________________________________
MAX797
CSL
CSH
SS
VL
SYNC
REF
GND
V+
Q1
FB
191k
49.9k
+12V AT 2A
BST
DH
LX
PGND
SKIP
SHDN
VIN
4.75V TO 6V
C2
150
μF
C3
150
μF
0.33
μF
0.01
Ω
0.01
μF
C1
220
μF
D1
4.7
μF
L1
5
μH
L1 = 2x SUMIDA CDRH125-100 IN PARALLEL
D1 = MOTOROLA MBR640
Q1 = MOTOROLA MTD20N03HDL
C1 = SANYO OS-CON 220
μF, 10V
C2, C3 = SANYO OS-CON 150
μF, 16V
Figure 16. 5V-to-12V PWM Boost Converter
MAX797
CSL
CSH
VL
SYNC
REF
GND
V+
Q1
T1
Q2
FB
200k
200k
OUTPUT
+5V AT 500mA
BST
CMPSH-3A
DH
LX
DL
PGND
SKIP
HI EFF
LOW IQ
SHDN
INPUT
3V TO 6.5V
4.7
μF
0.33
μF
33m
Ω
220
μF 220μF
100
μF
Q1, Q2 = Si9410DY
T1 = COILTRONIX CTX 10-4
10
μH PRIMARY, 1:1
START-UP SUPPLY VOLTAGE = 3.5V TYP
Figure 17. 90% Efficient, Low-Voltage PWM Flyback Converter (4 Cells to 5V)
____________________________________________Application Circuits (continued)



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