LS50-3.3 TDK Corporation, LS50-3.3 Datasheet - Page 3
![POWER SUPPLY 3.3V 10A SGL OUTPUT](/photos/8/80/88080/ls50-3_3_sml.jpg)
LS50-3.3
Manufacturer Part Number
LS50-3.3
Description
POWER SUPPLY 3.3V 10A SGL OUTPUT
Manufacturer
TDK Corporation
Series
LSr
Type
Industrialr
Datasheets
1.LS25-12.pdf
(2 pages)
2.LS50-12.pdf
(13 pages)
3.LS50-12.pdf
(2 pages)
4.LS50-12.pdf
(1 pages)
Specifications of LS50-3.3
Power Supply Type
Switching (Closed Frame)
Voltage - Output
3.3V
Number Of Outputs
1
Power (watts)
50W
Applications
Commercial
Voltage - Input
88 ~ 264VAC
Mounting Type
Chassis Mount
1st Output
3.3 VDC @ 10A
Size / Dimension
3.9" L x 3.8" W x 1.4" H (99.1mm x 96.5mm x 35.6mm)
Power (watts) - Rated
33W
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
10A
Power Rating
33W
Input Voltage
88V AC To 264V AC
Length
99.06mm
Width
96.52mm
Brand/series
LS Series
Configuration
Enclosed
Current, Output
10.0
Frequency, Input
47-63 Hz
Height
1.4 Inch
Line Regulation
20 mV
Load Regulation
40 mV
Operation
Switching
Output
3.3 VDC @ 10 A
Power, Output
33 W
Primary Type
AC-DC
Ripple, Rejection
80 mV
Temperature, Operating
–25 to 70 degree C
Temperature, Storage
–40 to 85 degree C
Voltage, Adjustment Range
3.00-3.60
Voltage, Input
88 to 264/125 to 373 VAC/VDC
Voltage, Output
3.3 VDC
Weight
12.5 Ozs.
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
3rd Output
-
2nd Output
-
4th Output
-
Lead Free Status / Rohs Status
RoHS Compliant part
Other names
285-1821
LS503
LS503.3
LS503
LS503.3
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LS50-3.3
Manufacturer:
TDK-LAMBDA
Quantity:
617
3. Explanation of Functions and Precautions
3-1. Input Voltage Range
Input voltage range is single phase 88 ~ 264VAC (47 ~ 63Hz) or 125 ~ 373VDC for LS25 ~ LS100.
For LS150, selectable switch 115/230VAC will decide the input voltage range as mentioned in the table below.
Input voltage which is out of specification, may damage the unit. For cases where conformance to various
safety specs(UL,CSA,EN) are required, input voltage range will be 100~240VAC (50/60Hz ).
Note : LS series able to withstand Input Surge of 300VAC for 5 seconds.
LS150 – Selectable voltage range
Selected Range
115
230
3-2. Output Voltage Range
V.ADJ trimmer is for output voltage adjustment within the range of specifications. Turning the trimmer clockwise will
increase the output voltage. Note over voltage protection ( OVP ) function may trigger if the output voltage is increased
excessively.
3-3. Inrush Current
Power Thermistor is built in to protect the circuit from high Inrush Current. Please select suitable input switch and fuse
rating in case of re-input the power at high temperature.
3-4. Over Voltage Protection (OVP)
The OVP function will shutdown the output except for LS25. The input need to be removed for a few minutes, and then
re-input for recovery of the output. OVP setting is fixed and cannot be adjusted externally.
Note : For LS25, OVP function will cause the output into ”hiccup” mode and damage the unit.
3-5. Over Current Protection (OCP)
OCP function operates when the output current exceeds OCP specifications. The output will automatically recover when
the overload condition is removed. Do not operate overload or dead short conditions for more than 30 seconds, which
could result in damage. There is no possibility of fire or burning.
3-6. Output Ripple & Noise
Ripple & noise are measured at 20MHz by using a 300mm twisted pair of load wires terminated with a 0.1uF film ca-
pacitor & 47uF electrolytic capacitor. When load lines are longer, ripple becomes larger. The output ripple cannot be
measured accurately if the probe ground lead of oscilloscope is too long. At low temperature, large ripple & noise may
also be observed due to large ESR of the internal Electrolytic Capacitors especially at -25degC. Output voltage rise may
not be smooth during initial turn on at low temperature.
Applicable Input Voltage Range in VAC
88 ~ 132
176 ~ 264
2
Applicable Input Voltage Range in VDC
NA
248 ~ 373
LS
INSTRUCTION MANUAL
TDK-Lambda
25-150
Series