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O
BSOLETE
SELECTION GUIDE
Nominal Input
Voltage
Output
Voltage
Order Code
V
V
NGA Series
Package Style
V
W
%
%/%
%
mVp-p
ºC
Non-Isol
Non-Isola
d W
Non-Isolated Wide Input DC/DC Converters
Output
Nominal Input
Power Consumption Nominal
Current
Current at Full Load
at Shutdown
Efficiency
Min. Full Min. Nom. Max. Min. Nom. Max. Min. Max.
Load Load V
IN
V
IN
V
IN
V
IN
V
IN
V
IN
V
IN
V
IN
A
mA
mW
%
FEATURES
RoHS compliant
Efficiency to 95%
Industry standard footprint
Short circuit protection
Wide input range
1.8V, 2.5V, 3.3V & 5V Output
Operating temperature range -40ºC to 85ºC
SMD construction
Optional shutdown & trim pins
(NGA10S15050SEC & NGA10S15050DEC)
NGA10S15018SC
15
1.8
0
2.0
847 280 160
0.5
4.8 16.1 89
81 SIP
NGA10S15018DC
15
1.8
0
2.0
847 280 160
0.5
4.8 16.1 89
81 DIP
NGA10S15025SC
15
2.5
0
2.0 1142 380 210
0.5
4.8 16.1 92
85 SIP
NGA10S15025DC
15
2.5
0
2.0 1142 380 210
0.5
4.8 16.1 92
85 DIP
NGA10S15033SC
15
3.3
0
2.0 1478 480 269
0.5
4.8 16.1 94
88 SIP
NGA10S15033DC
15
3.3
0
2.0 1478 480 269
0.5
4.8 16.1 94
88 DIP
NGA10S15050SC
15
5.0
0
2.0 1493 705 388
1.0
4.8 16.1 95
92 SIP
NGA10S15050DC
15
5.0
0
2.0 1493 705 388
1.0
4.8 16.1 95
92 DIP
1
NGA10S15050SEC
15
5.0
0
2.0 1493 705 388
1.0
4.8 16.1 95
92 SIP
1
NGA10S15050DEC
15
5.0
0
2.0 1493 705 388
1.0
4.8 16.1 95
92 DIP
RECOMMENDED ALTERNATIVES:
Order Code
Recommended Alternative
Order Code
Recommended Alternative
Click to
78SRH-3.3/2-C
NGA10S15018SC
OKR-T/3-W12-C
NGA10S15033DC
Click to
download the
NGA10S15018DC
OKR-T/3-W12-C
78SR-5/2-C
download the
NGA10S15050SC
78SR data
OKR data
NGA10S15025SC
OKR-T/3-W12-C
NGA10S15050DC
78SRH-5/2-C
sheet »
sheet »
NGA10S15025DC
OKR-T/3-W12-C
NGA10S15050SEC
OKR-T/3-W12-C
OKR data
sheet »
78SR data sheet »
NGA10S15050DEC
NGA10S15033SC
78SR-3.3/2-C
OKR-T/3-W12-C
Note: Also see OKI-78SR series for ≤1.5A models. Click here for the data sheet »
INPUT CHARACTERISTICS
Parameter
Voltage range
Conditions
Continuous operation, 1.8V, 2.5V & 3.3V
output types
Continuous operation NGA10S15050SC
Continuous operation NGA10S15050SEC
1.8V output types
2.5V output types
3.3V output types
5.0V output types
Min.
4.75
7.0
Variable
2
Typ.
15
15
15
29
49
48
99
Max.
28
28
28
Units
DESCRIPTION
The NGA series is a range of low profile DC/DC
converters offering a single regulated output over
a wide input voltage range. All parts deliver the full
output power up to 85ºC without the need for exter-
nal heatsinking while the synchronus rectification
design yields excellent efficiencies up to 95%.
Reflected ripple current
mA p-p
OUTPUT CHARACTERISTICS
Parameter
Rated power
Voltage set point accuracy
Line regulation
Load regulation
Ripple and noise
Conditions
T
A
=-40ºC to 85ºC
Min.
Typ.
±1.5
Max.
10
±5.0
0.5
2.0
70
Units
Low line to high line, with external input/
output capacitors, refer to test circuit
10% load to 100% load, with external input/
output capacitors, refer to test circuit
BW=DC to 20MHz, with external input/output
capacitors, refer to test circuit
0.2
1.5
40
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Min.
-40
-55
40
Typ.
Max.
85
125
Units
Operation
Storage
PCB temperature above ambient
1. If optional V
ADJ
and SD pin are required (as indicated in the mechanical dimensions diagram) include an E in the part number when
ordering, i.e. NGA10S1505SEC & NGA10S1505DEC.
2. Supply voltage should exceed output voltage by 1.45V.
All specifications typical at T
A
=25°C, nominal input voltage and rated output current unless otherwise specified.
For full details go to
www.murata-ps.com/rohs
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Technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232
2013-01-24 KDC_NGAC.F03
Page 1 of 6
NGA Series
Non-Isolated Wide Input DC/DC Converters
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
Input voltage V
IN
Minimum load
Output trim control
Shutdown control
Continuous
300ºC
1.1W
28V
0%
OV to +5V relative to COMMON
-0.3V to +28V relative to COMMON
GENERAL CHARACTERISTICS
Parameter
Switching frequency
Transient response Max.
over-shoot
50% load change, 1.8V output types
50% load change, 2.5V output types
50% load change, 3.3V output types
50% load change, 5.0V output types
50% load change, 1.8V output types
50% load change, 2.5V output types
50% load change, 3.3V output types
50% load change, 5.0V output types
1.8V, 2.5V & 3.3V output types
5.0V output types
V
IN
Min. to V
IN
Max.
400VDC from 100pF capacitor via 1500Ω resistance
Conditions
Min.
270
Typ.
Max.
Units
Transient response Max.
under-shoot
Under voltage lock out
Start delay
ESD
300
330
kHz
90 (160)
84 (145)
mV (μs)
83 (130)
75 (40)
64 (160)
86 (145)
mV (μs)
84 (120)
74 (80)
4.0
V
5.0
100
ms
Meets MIL-STD-833F method 3015.7
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2013-01-24 KDC_NGAC.F03
Page 2 of 6
NGA Series
Non-Isolated Wide Input DC/DC Converters
APPLICATION NOTES
External Capacitance
External capacitors are necessary in order to guarantee stability and full paramet-
ric performance over the full line and load range. All parts have been tested and
characterised using the following values and test circuit.
Test Circuit
Value
C
IN
100μF, 50V
C
OUT
100μF, 10V
Voltage trimming
The trimming (adjust) input on the device allows output voltage adjustment to
within ±5%
1
of the desired V
OUT
using a resistor with a value determined by the
following equations.
When open circuit, the output will be +5V.
A resistor (R
D
) between the trim pin and the output pin will adjust the output volt-
age between +5V to +1.8V.
1
= (22 [1.028V
O
-1])
-1
-0.011
R
D
Shutdown
When the shutdown pin is shorted to Common, the device’s output will be dis-
abled. To shutdown the device the pin should be taken below 0.8V using either an
open collector pull down or by using isolated delay contacts. To enable the device
output the shutdown pin should be left floating or taken no lower than +1.5V to a
maximum of (+28V).
If the shutdown pin is to be connected to a long wire, it is recommended that a
capacitor (10nF) decouples the shutdown pin to Common in order to avoid the risk
of injecting noise into the device circuit.
A resistor (R
U
) between the trim pin and the Common pin will adjust the device
output from +5V to +5.5V.
1
=
(1.02V
O
)-1 -0.0455
R
U
91
(
)
All specifications typical at T
A
=25°C, nominal input voltage and rated output current unless otherwise specified.
1. Accuracy of adjustment is subject to tolerance of resistors and initial output accuracy.
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2013-01-24 KDC_NGAC.F03
Page 3 of 6
NGA Series
Non-Isolated Wide Input DC/DC Converters
MEAN TIME TO FAILURE (MTTF)
1
Part number
NGA10S15018
NGA10S15025
NGA10S15033
NGA10S15050
25ºC
1464
1463
1463
1461
Units
KHrs
TERMINOLOGY
Transient Response
Time for V
OUT
to be within 1% of V
NOM
where:
V
OUT
25% + V
OUT
75%
V
NOM
=
2
Over-Shoot/Under-Shoot
Max. deviation from final steady state output.
Start Delay
Typical rise time (ms) after control pin high
with valid input.
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS - SIP PACKAGE
0.846
(21.49)
RECOMMENDED FOOTPRINT
NGA10S15050SEC
0.312
(7.92)
5*
4
3
0.1 (2.54)
0.825 (20.96)
XYYWW
2
1*
All dimensions in inches ±0.01 (mm ±0.25mm).
All pins on a 0.1 (2.54) pitch and within ±0.01 (0.25) of true position.
0.014±0.002
(0.35±0.05)
0.149
(3.78)
0.220 (5.60)
PIN CONNECTIONS
Pin
1*
2
3
4
5*
Function
SD
+V
IN
COMMON
+V
OUT
V
ADJ
1*
2
3
4 5*
0.878
(22.29)
0.020±0.002
(0.50±0.05)
0.146±0.020
(3.70±0.50)
All dimensions in inches ±0.01 (mm ±0.25mm).
All pins on a 0.1 (2.54) pitch and within ±0.01 (0.25) of true position.
Weight: 4.0g
* Optional pins available on NGA10S15050SEC only
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
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2013-01-24 KDC_NGAC.F03
Page 4 of 6
NGA Series
Non-Isolated Wide Input DC/DC Converters
PACKAGE SPECIFICATIONS (continued)
MECHANICAL DIMENSIONS - DIP PACKAGE
0.874±0.020 (22.19±0.50)
0.846 (21.49)
RECOMMENDED FOOTPRINT
6
5*
4
3
2
0.825 (20.96)
7
1*
0.267 (6.77) MAX
0.222±0.020
(5.65±0.50 )
0.010±0.002
(0.25±0.05)
0.753 (19.14)
0.020±0.002 (0.50±0.05)
All dimensions in inches ±0.01 (mm ±0.25mm).
All pins on a 0.1 (2.54) pitch and within 0.01 (0.25) of true position.
0.161±0.020
(4.10±0.50)
PIN CONNECTIONS
Pin
1*
2
3
4
5*
6
7
Function
SD
+V
IN
COMMON
+V
OUT
V
ADJ
NC
NC
NGA10S15050DC
0.213 (5.41)
1*
2
7
0.400
(10.16)
6
XYYWW
3
4
5*
0.100 (2.54)
All dimensions in inches ±0.01 (mm ±0.25mm) except where stated otherwise.
All pins on a 0.1 (2.54) pitch and within 0.01 (0.25) of true position.
Weight: 4.0g
* Optional pins available on NGA10S15050DEC only
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300ºC for 10 seconds. The pin
termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin with Nickel Preplate and Tin on the DIP types.
Both types in this series are backward compatible with Sn/Pb soldering systems.
For further information, please visit www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232
2013-01-24 KDC_NGAC.F03
Page 5 of 6
