LS75-3.3 TDK Corporation, LS75-3.3 Datasheet - Page 6

• 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. Mounting Directions
5-1. Output Derating according to the Mounting Directions
Recommended standard mounting is Method ( A ). Method ( B ), ( C ) and ( D ) are also possible. Refer to the Output
Derating below. Please do not use installation Method ( E ), where the PCB will be on the topside and heat will be
trapped inside the unit.
In the following derating curve, the maximum output current is denoted as 100%.
`
(A) Output Derating versus Ambient Temperature (Convection Cooling)
LS25-3.3
120
100
Load (%)
80
60
40
20
50
0
-25
0
Output Derating Vs Ambient Temperature
25
Ambient Temperature (
40
5
50
o
C)
65 70
75
LS
INSTRUCTION MANUAL
TDK-Lambda
25-150
100
Series
Mounting
A & D
Mounting
B & C