MAX5035AUSA+T Maxim Integrated Products, MAX5035AUSA+T Datasheet - Page 13

• Manufacturer Part Number: MAX5035AUSA+T
• Description: IC DC-DC CONV HI EFF 8-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX5035AUSA+T

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 3.3V
• Current - Output: 1A
• Frequency - Switching: 125kHz
• Voltage - Input: 7.5 ~ 76 V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Power - Output: 471mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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)
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)
1A, 76V, High-Efficiency MAXPower
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
Step-Down DC-DC Converter
= 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 heatsinking.
C
OUT
V
OUT
13