NKA0512DC Murata Power Solutions Inc, NKA0512DC Datasheet - Page 4

• Manufacturer Part Number: NKA0512DC
• Description: DC/DC Converters & Regulators 1W 5V to +/-12V Dual Output
• Manufacturer: Murata Power Solutions Inc
• Series: NKAr

Specifications of NKA0512DC

• Output Power: 0.5 W
• Input Voltage Range: 4.5 V to 5.5 V
• Input Voltage (nominal): 5 V
• Number Of Outputs: 2
• Output Voltage (channel 1): +/- 12 V
• Output Current (channel 1): 0.042 A
• Output Voltage (channel 2): 12 V
• Isolation Voltage: 3 KV
• Package / Case Size: DIP
• Output Voltage: +/- 12 V
• Product: Isolated
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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.
NKA0505SEC
NKA0303SC
NKA0305SC
NKA0309SC
NKA0312SC
NKA0315SC
NKA0503SC
NKA0505SC
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
22.13
25.04
1.35
3.35
9.30
0.80
2.32
2.03
ms
SUPPLY
NKA0509SC
NKA0512SC
NKA0515SC
NKA1205SC
NKA1209SC
NKA1212SC
NKA1215SC
DC/DC Converter
Input
+
-
Output
+
-
Start-up time
C1 C2 C3
14.63
28.38
14.39
8.01
2.11
7.62
9.08
ms
R LOAD
R1
T1
Isolated Sub-Miniature 1W Dual Output DC/DC Converters
Technical enquiries email: [e-mail], tel: [phone]
R2
OSCILLOSCOPE
Y INPUT
Typical Start-Up Wave Form
2010-07-08 KDC_NKA.J01 Page 4 of 7
NKA Series