MAX5033DASA-T Maxim Integrated Products, MAX5033DASA-T Datasheet - Page 12

• Manufacturer Part Number: MAX5033DASA-T
• Description: DC/DC Switching Converters 500mA 76V MAXPower Step-Down
• Manufacturer: Maxim Integrated Products

500mA, 76V, High-Efficiency, MAXPower
Step-Down DC-DC Converter
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
Figure 2. Fixed Output Voltages
Table 2. Typical External Components Selection (Circuit of Figure 2)
12
7.5 to 76
7.5 to 76
15 to 76
V
______________________________________________________________________________________
IN
(V)
V
OUT
3.3
12
5
(V)
V
R1
R2
IN
I
OUT
0.5
0.5
0.5
C
(A)
IN
ON/OFF
C
C
C
R1 = 1MΩ ±1%, 0805
R2 = 384kΩ ±1%, 0805
D1 = 50SQ100, IR
L1 = 150µH, Coilcraft Inc., DO5022P-154
C
C
C
R1 = 1MΩ ±1%, 0805
R2 = 384kΩ ±1%, 0805
D1 = 50SQ100, IR
L1 = 220µH, Coilcraft Inc., DO5022P-224
C
C
C
R1 = 1MΩ ±1%, 0805
R2 = 384kΩ ±1%, 0805
D1 = 50SQ100, IR
L1 = 330µH, Coilcraft Inc., DO5022P-334
V
SGND
IN
OUT
BST
IN
OUT
BST
IN
OUT
BST
IN
MAX5033
= 47µF, Panasonic, EEVFK2A470Q
= 47µF, Panasonic, EEVFK2A470Q
= 47µF, Panasonic, EEVFK2A470Q
= 0.1µF, 0805
= 0.1µF, 0805
= 0.1µF, 0805
= 47µF, Vishay Sprague, 594D476X_016C2T
= 33µF, Vishay Sprague, 594D336X_016C2T
= 15µF, Vishay Sprague, 594D156X_025C2T
GND
BST
VD
LX
FB
device. Also, place BST and VD bypass capacitors
very close to the device. Use the PCB copper plane
connecting to V
0.1µF
0.1µF
EXTERNAL COMPONENTS
D1
L1
IN
and LX for heatsinking.
Application Circuit
C
OUT
V
OUT