NKE0503SC Murata Power Solutions Inc, NKE0503SC Datasheet - Page 4

• Manufacturer Part Number: NKE0503SC
• Description: CONV DC/DC 1W 5VIN 3.3V SIP SGL
• Manufacturer: Murata Power Solutions Inc
• Series: NKEr
• Type: Isolatedr

Specifications of NKE0503SC

• Number Of Outputs: 1
• Output: 3.3V
• Power (watts): 1W
• Mounting Type: Through Hole
• Voltage - Input: 4.5 ~ 5.5V
• Package / Case: 4-SIP Module
• 1st Output: 3.3 VDC @ 303mA
• Size / Dimension: 0.45" L x 0.24" W x 0.29" H (11.4mm x 6.1mm x 7.4mm)
• Power (watts) - Rated: 1W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 74%
• Approvals: cUL, UL
• Output Power: 1 W
• Input Voltage Range: 4.5 V to 5.5 V
• Input Voltage (nominal): 5 V
• Output Voltage (channel 1): 3.3 V
• Output Current (channel 1): 303 mA
• Isolation Voltage: 3 KV
• Package / Case Size: SIP
• Output Voltage: 3.3 V
• Product: Isolated
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 811-1432-5

APPLICATION NOTES
www.murata-ps.com
Minimum load
The minimum load to meet datasheet specifi cation is 10% of the full rated load across the specifi ed input voltage range. Lower than 10% minimum loading will result in
an increase in output voltage, which may rise to typically double the specifi ed output voltage if the output load falls to less than 5%.
Capacitive loading and start up
Typical start up times for this series, with a typical input voltage rise time of 2.2μs and output capacitance of 10μF, are shown in the table below. The product
series will start into a capacitance of 47μF with an increased start time, however, the maximum recommended output capacitance is 10μF.
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test confi guration.
Differential Mode Noise Test Schematic
C1
C2
C3
R1
R2
T1
RLOAD
Measured values are multiplied by 10 to obtain the specifi ed values.
NKE0505SEC
NKE0303SC
NKE0305SC
NKE0309SC
NKE0503SC
NKE0505SC
NKE0509SC
1μF X7R m ultilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter
10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC/DC converter with an ESR of less
than 100mΩ at 100 kHz
100nF multilayer ceramic capacitor, general purpose
450Ω resistor, carbon fi lm, ±1% tolerance
50Ω BNC termination
3T of the coax cable through a ferrite toroid
Resistive load to the maximum power rating of the DC/DC converter. Connections should be made via twisted wires
Start-up time
1306
5250
1075
3140
544
496
894
μs
SUPPLY
NKE0512SC
NKE0515SC
NKE1205SC
NKE1209SC
NKE1212SC
NKE1215SC
DC/DC Converter
Input
+
-
Output
+
-
C1 C2 C3
Start-up time
5040
9940
1671
2835
5295
8475
R LOAD
μs
R1
T1
Isolated Sub-Miniature 1W Single Output DC/DC Converters
Technical enquiries email: [e-mail], tel: [phone]
R2
OSCILLOSCOPE
Y INPUT
Typical Start-Up Wave Form
2010-07-14 KDC_NKE.K01 Page 4 of 7
NKE Series