MAX5035 Maxim, MAX5035 Datasheet - Page 12

• Manufacturer Part Number: MAX5035
• Description: 1A / 76V / High-Efficiency MAXPower Step-Down DC-DC Converter
• Manufacturer: Maxim

ground configuration). A ground plane is required.
Minimize lead lengths to reduce stray capacitance,
trace resistance, and radiated noise. In particular,
place the Schottky rectifier diode right next to the
1A, 76V, High-Efficiency MAXPower
Step-Down DC-DC Converter
Figure 2. Fixed Output Voltages
Table 2. Typical External Components Selection (Circuit of Figure 2)
12
______________________________________________________________________________________
7.5 to 76
7.5 to 76
7.5 to 76
7.5 to 76
15 to 76
V
IN
(V)
V
V
OUT
IN
3.3
3.3
12
5
5
R1
R2
(V)
C
I
IN
OUT
0.5
0.5
1
1
1
(A)
ON/OFF
V
SGND
IN
MAX5035
C
C
C
R1 = 1MΩ ±1%, 0805
R2 = 384kΩ ±1%, 0805
D1 = 50SQ100, IR
L1 = 100µH, Coilcraft Inc., DO5022P-104
C
C
C
R1 = 1MΩ ±1%, 0805
R2 = 384kΩ ±1%, 0805
D1 = 50SQ100, IR
L1 = 100µH, Coilcraft Inc., DO5022P-104
C
C
C
R1 = 1MΩ ±1%, 0805
R2 = 139kΩ ±1%, 0805
D1 = 50SQ100, IR
L1 = 220µH, Coilcraft Inc., DO5022P-224
GND
IN
OUT
BST
IN
OUT
BST
IN
OUT
BST
= 68µF, Panasonic, EEVFK2A680Q
= 68µF, Panasonic, EEVFK2A680Q
= 68µF, Panasonic, EEVFK2A680Q
= 0.1µF, 0805
= 0.1µF, 0805
= 0.1µF, 0805
BST
= 68µF, Vishay Sprague, 594D686X_010C2T
= 68µF, Vishay Sprague, 594D68X_010C2T
= 15µF, Vishay Sprague, 594D156X0025C2T
VD
LX
FB
device. Also, place BST and VD bypass capacitors
very close to the device. Use the PC board copper
plane connecting to V
0.1µF
0.1µF
D1
EXTERNAL COMPONENTS
L1
IN
Application Circuits
and LX for heat sinking.
C
OUT
V
OUT