MAX668 Maxim, MAX668 Datasheet - Page 17
MAX668
Manufacturer Part Number
MAX668
Description
1.8V to 28V Input / PWM Step-Up Controllers in MAX
Manufacturer
Maxim
Datasheet
1.MAX668.pdf
(18 pages)
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TRANSISTOR COUNT: 1861
Figure 7. Isolated +5V to +5V at 400mA Power Supply
T1: COILTRONICS CTX03-14232
V
IN
= +5V
220 F
10V
______________________________________________________________________________________
Chip Information
1 F
0.22 F
SHDN
FB
REF
0.068 F
1.8V to 28V Input, PWM Step-Up
MAX668
FREQ
LDO
100k
10k
GND
V
CC
PGND
EXT
CS+
610
2:1
T1
MOC211
IRF7603
0.1
TLV431
510
MBR0540L
Controllers in µMAX
0.1 F
MBR0540L
47 H
R3
100k
1%
R2
301k
1%
220 F
10V
+5V @ 400mA
+5V RETURN
17
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