http://www.www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf




Murata Manufacturing Electronic Components Datasheet

NCS1S1203SC Datasheet

Isolated 1W 4:1 Input Single Output DC/DC Converters

No Preview Available !

NCS1S1203SC pdf
www.murata-ps.com
FEATURES
„UL 60950 recognised
„4:1 Wide range voltage input
„Operating temperature range -40°C to
105°C with derating
„1kVDC Isolation “Hi Pot Test”
„3.3V, 5V & 12V outputs
„No electrolytic capacitors
„Continuous short circuit protection
PRODUCT OVERVIEW
The NCS1 series of DC/DC converters offers a
single output voltage from input voltage ranges
of 4.5-18V and 9-36V. The NCS1 is housed in an
industry standard package with a standard pinout.
Applications include telecommunications, battery
powered systems, process control and distributed
power systems.
NCS1 Series
Isolated 1W 4:1 Input Single Output DC/DC Converters
SELECTION GUIDE
Order Code
Input
Voltage
Output
Voltage
Output
Current
Efficiency
5V or 24V Input.
Nom.
VV
Min. Typ.
mA % %
NCS1S1203SC 12 3.3 303 73 77
NCS1S1205SC 12
5 200 76 79
NCS1S1212SC 12 12 83 75 78
NCS1S2403SC 24 3.3 303 76 78.5
NCS1S2405SC 24
5 200 79 82
NCS1S2412SC 24 12 83 80 83
Efficiency
12V Input.
Min. Typ.
%%
71 75
74 77
75 79
73 76
77 80
77 80
Ripple and Noise
Typ.
mVp/p
24
25
40
35
27
28
Max.
mVp/p
70
50
120
70
50
120
pF
24
30
35
28
42
42
MTTF1
kHrs
1020
915
1130
1217
1022
943
INPUT CHARACTERISTICS
Parameter
Conditions
Voltage range
12V input types
24V input types
Input current
NCS1S12XX
NCS1S24XX
Input reflected ripple
current
NCS1S12XX
NCS1S24XX
5V input voltage
12V input voltage
12V input voltage
24V input voltage
Min. Typ. Max. Units
4.5 12 18
9 24 36
V
0.26
0.1
A
0.1
0.05
5 30
mA p-p
5 15
OUTPUT CHARACTERISTICS
Parameter
Conditions
Min. Typ. Max. Units
Rated power
All output types
1W
Minimal load to meet datasheet specification
10 %
Voltage set point accuracy All output types
±1 ±2 %
Line regulation
Low line to high line
±0.5 %
Load regulation
All output types
0.5 %
Transient response
Peak deviation (12.5-37.5% & 37.5-12.5% swing)
Settling time
(within 5% Vout Nom.)
5 %Vout
2 ms
ISOLATION CHARACTERISTICS
Parameter
Conditions
Isolation test voltage
Flash tested for 1 second
Resistance
Viso = 1kVDC
Min. Typ. Max. Units
1000 VDC
1 GΩ
GENERAL CHARACTERISTICS
Parameter
Conditions
Min. Typ. Max. Units
Switching frequency
100 400 kHz
Control pin input
Module on, pin unconnected or open collector floating
Module off
0.8 V
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
1 Calculated using MIL-HDBK-217 FN2, parts stress method with nominal input voltage at full load.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
All enquiries: www.murata-ps.com/support
KDC_NCS1.D01 Page 1 of 8


Murata Manufacturing Electronic Components Datasheet

NCS1S1203SC Datasheet

Isolated 1W 4:1 Input Single Output DC/DC Converters

No Preview Available !

NCS1S1203SC pdf
NCS1 Series
Isolated 1W 4:1 Input Single Output DC/DC Converters
TEMPERATURE CHARACTERISTICS
Parameter
Operation
Storage
Case temperature rise above ambient
Conditions
100% Load, Nom VIN, Still Air
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection (for SELV input voltages)
Control pin input voltage
Lead temperature 1.0mm from case for 10 seconds (to JEDEC JESD22-B106 ISS C)
Input voltage, NCS1 12V input types
Input voltage, NCS1 24V input types
APPLICATION NOTES
Maximum Output Capacitance
Maximum output capacitance should not exceed:
Output Voltage
V
3.3
5
12
Maximum Load Capacitance
μF
470
470
220
Min. Typ. Max. Units
-40 105
-50 125 °C
15 22
Continuous
18V Max
260°C
25V
40V
Start-up times
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 the maximum output capacitance with increased start times.
Part No.
NCS1S1203SC
NCS1S1205SC
NCS1S1212SC
NCS1S2403SC
NCS1S2405SC
NCS1S2412SC
Start-up times
ms
6
9
20
12
7
12
Control Pin
The NCS1 converters have a shutdown feature which enables the user to put the converter into a low power state. The control pin connects directly to the base of an internal
transistor, and the switch off mechanism for the NCS1 works by forward biasing this NPN transistor. If the pin is left open (high impedance), the converter will be ON (there is
no allowed low state for this pin), but once a control voltage is applied with sufficient drive current, the converter will be switched OFF. A suitable application circuit is shown
below.
V
IN
V
C
OV
-V
IN
R
1
NCS1
D
1 CTRL
R
2
Q1
D (e.g. 1N4003) is required to provide high impedence when the signal is
1
low. From the NCS1 specification, the drive current to operate this function is
recommended to be 3mA, and hence the value of R can be derived as follows:
1
V -V -V
R=
1
CD
I
Q
C
Assuming V =5V, V =0.7V and V =1V:
CD
Q
R=
1
5
- 0.7 - 1.0
3 x 10-3
=
1100Ω
www.murata-ps.com
All enquiries: www.murata-ps.com/support
KDC_NCS1.D01 Page 2 of 8


Part Number NCS1S1203SC
Description Isolated 1W 4:1 Input Single Output DC/DC Converters
Maker Murata
Total Page 8 Pages
PDF Download
NCS1S1203SC pdf
Download PDF File
NCS1S1203SC pdf
View for Mobile






Related Datasheet

1 NCS1S1203SC Isolated 1W 4:1 Input Single Output DC/DC Converters Murata
Murata
NCS1S1203SC pdf




Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

site map

webmaste! click here

contact us

Buy Components