MAX770CSA View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX770CSA
Maxim Integrated
MAX770CSA Datasheet PDF : 20 Pages
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5V/12V/15V or Adjustable, High-Efficiency,
Low IQ, Step-Up DC-DC Controllers
3
1 V12
V+
14 V15
C2
0.1µF
VIN
2 V5
SGND 10
C1 L1
R4
63.4k
(1%)
8 REF MAX773
100k
C3
LBO 4
0.1µF
22µH
D1
1N5817
VOUT
= 12V
5 LBI
Si9410DY
EXTH 13
N
R3
10k
(1%)
7 SHDN
EXTL 12
CS 11
C4
6 FB
GND
RSENSE
9
VTRIP (V)
MIN NOMINAL MAX
10.6 11.0 11.4
( ) R4 = R3 VTRIP -1
VREF
VREF = 1.5V
Figure 3a. 12V Preset Output, Bootstrapped, N-Channel
Power MOSFET
VIN = 5V
C1
47µF
10
4
8
C3
0.1µF
5
C2
0.1µF
3
V+ EXTH
SGND
LBO
EXTL
REF MAX773
CS
V15
LBI
V12
L1
150µH
13 910Ω
12
11
14
RSENSE
0.4Ω
1
D1 VOUT = 24V
1N5818 @ 30mA
ZTX694B
C4
150µF
7
SHDN
V5 2
FB 6
R2
GND
R1
510k
34k
9
( ) R2 = (R1) VOUT -1
VREF
VREF = 1.5V
Figure 3b. 24V Output, Non-Bootstrapped, NPN Power
Transistor
VIN = 5V
C1
C2
0.1µF
10 SGND
4 LBO
3
V+
EXTH 13
EXTL 12
8 REF
C3
0.1µF
MAX773
CS 11
L1
22µH
D1
1N5817 VOUT = 15V
N
Si9410DY
C4
RSENSE
7 SHDN
6 FB
5 LBI
V15 14
V12 1
V5 2
GND
9
Figure 3c. 15V Preset Output, Non-Bootstrapped N-Channel
Power MOSFET
VIN
C1
4 LBO
3
V+
EXTH 13
EXTL 12
8 REF
CS 11
C3
0.1µF
MAX773
5 LBI
V15 14
7 SHDN
V12 1
V5 2
10 SGND
FB 6
GND
9
L1
20µH
C2
0.1µF
VOUT = 16V
D1
1N5817
N
Si9410DY C4
RSENSE
R2
133k
R1
13.7k
( ) R2 = (R1) VOUT -1
VREF
VREF = 1.5V
Figure 3d. 16V Output, Bootstrapped, N-Channel
Power MOSFET
______________________________________________________________________________________ 11
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