LS75-3.3 TDK Corporation, LS75-3.3 Datasheet - Page 12

• Manufacturer Part Number: LS75-3.3
• Description: POWER SUPPLY 3.3V 15A SGL OUTPUT
• Manufacturer: TDK Corporation
• Series: LSr

Specifications of LS75-3.3

• Power Supply Type: Switching (Closed Frame)
• Voltage - Output: 3.3V
• Number Of Outputs: 1
• Power (watts): 75W
• Applications: Commercial
• Voltage - Input: 88 ~ 264VAC
• Mounting Type: Chassis Mount
• 1st Output: 3.3 VDC @ 15A
• Size / Dimension: 5.1" L x 3.8" W x 1.5" H (129.5mm x 96.5mm x 38.1mm)
• Power (watts) - Rated: 49.5W
• Operating Temperature: -25°C ~ 70°C
• Efficiency: 75%
• Approvals: CE, EN, IEC, UL
• Power Supply Output Type: Fixed
• No. Of Outputs: 1
• Output Voltage: 3.3V
• Output Current: 15A
• Power Rating: 49.5W
• Input Voltage: 88V AC To 264V AC
• Length: 129.54mm
• Width: 96.52mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 285-1828; LS753; LS753.3

5-2 Mounting Method
1)
2)
3)
6. Wiring Method
This is convection cooling type power supply. In consideration of the heat radiation and safety, please keep a dis-
tance of more than 15mm between the power supply and the peripheral parts. When lining up multiple units, please
make sure to place them 15mm or more apart from each other.
Maximum allowable penetration of mounting screws into the power-supply is 5mm except LS25 (4mm).
Recommended torque for mounting screws of LS25 ~ LS150 (M3 screw) : 0.49 N⋅m (5.0 kgf⋅cm).
The input and output load wires shall be separated and twisted to improve noise immunity.
Both wires must be as thick and short as possible to make lower impedance.
Noise can be reduced by connecting a film capacitor with 0.1uF capacitance across the load terminals.
For safety and EMI considerations, connect the FG terminal of LS series to mounting set ground terminal.
The recommended wire type :
Note 1 : When using separate loads, it is recommended to use 2 pieces of 0.8mm thick crimp-type terminal.
Note 2 : For recommended wire diameter, refer to wire maker recommended allowable current and voltage
MODEL
LS35 ~ LS150
LS25
drop. For higher output current model like 3.3V & 5V, bigger diameter wire is recommended.
Recommended
AWG16-22
AWG14-22
Wire
M3.0 Screws
0.49 N⋅m (5.0 kgf⋅cm)
M3.5 Screws
1.0 N⋅m (9.8 kgf⋅cm) ~
1.4 N⋅m (13.7 kgf⋅cm)
Recommended torque
11
Recommended crimp-type terminal
(MAX)
6.0mm
6.8mm
D
LS
INSTRUCTION MANUAL
TDK-Lambda
25-150
0.8mm
0.8mm
(MAX)
t
Series
Mounting
2 pieces
2 pieces
(MAX)
Pieces