MAX1771 Maxim, MAX1771 Datasheet - Page 15

• Manufacturer Part Number: MAX1771
• Description: 12V or Adjustable / High-Efficiency / Low IQ / Step-Up DC-DC Controller
• Manufacturer: Maxim

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Figure 7. -48V Input to 5V Output at 300mA, Without a Transformer
Figure 8. 2V Input to 24V Output LCD Bias
0.1 F
C5
3
4
5
7
FB
GND
SHDN
REF
______________________________________________________________________________________
MAX1771
3.3V OR 5V
10 F
100V
AGND
C6
BATTERY
INPUT
2V TO 12V
SUPPLY
ON
EXT
CS
V+
LOGIC
220 H–680 H
1
8
2
6
OFF
12V or Adjustable, High-Efficiency,
D03340
Low I
2
-48V
0.1 F
L1
4
0.1 F
SHDN
1
3
MAX1771
REF
MMBT8099LT1
Q1
MTD6N10
R1
0.15
5
V+
MBRS1100T3
Q2
2
GND
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EXTL
6, 7
D1
Q
5.1k
CS
R9
FB 3
R5
1k
, Step-Up DC-DC Controller
1
8
R
SENSE
0.2
22 H
R6
200k
L1
C8
1 F
CMPSH-3
N
MMFT3055ELT1
D3
1N5817
D2
CMPZ5240/
MMBZ5240BL
200
R7
10k
10k
R3
2.2 F
20V
C4
Adj. = 12V TO 24V
R2
150k
(AS SHOWN)
MMBT8599LT1
OUTPUT
C7
220pF
47 F
Q3
R2
47k
1%
R4
100k
R3
16k
1%
C1
220 F
10V
C2
220 F
10V
300mA
+5V
C3
0.33 F
15