2A-NXT&2B-NXT
Series
2 Watt FIXED INPUT, ISOLATED Dual &Single SMD Output DC-DC CONVERTER
SELECTION GUIDE
Part
Number
SMD
2B0503NXT
Input
Voltage
(VDC)
5
9
12
15
24
5
9
12
15
24
5
9
12
15
24
5
9
12
15
24
5
9
12
15
24
5
9
12
15
24
5
9
12
15
24
5
9
12
15
24
5
9
12
15
24
5
9
12
15
24
5
9
12
15
24
Outpu
Voltage
(VDC)
3.3
3.3
3.3
3.3
3.3
5
5
5
5
5
9
9
9
9
9
12
12
12
12
12
15
15
15
15
15
24
24
24
24
24
±5
±5
±5
±5
±5
±9
±9
±9
±9
±9
±12
±12
±12
±12
±12
±15
±15
±15
±15
±15
±24
±24
±24
±24
±24
Output
Current
(mA)
606
606
606
606
606
400
400
400
400
400
222
222
222
222
222
167
167
167
167
167
133
133
133
133
133
83
83
83
83
83
±200
±200
±200
±200
±200
±111
±111
±111
±111
±111
±83
±83
±83
±83
±83
±66
±66
±66
±66
±66
±42
±42
±42
±42
±42
Efficiency
(%)
70-75
70-75
70-75
70-75
70-75
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
80-85
70-75
70-75
70-75
70-75
70-75
75-78
75-78
75-78
75-78
75-78
75-83
75-83
75-83
75-83
75-83
75-85
75-85
75-85
75-85
75-85
78-85
78-85
78-85
78-85
78-85
FEATURES
◆
◆
◆
◆
◆
2B0903NXT
2B1203NXT
2B1503NXT
2B2403NXT
2B0505NXT
2B0905NXT
2B1205NXT
2B1505NXT
2B2405NXT
2B0509NXT
2B0909NXT
2B1209NXT
2B1509NXT
2B2409NXT
2B0512NXT
2B0912NXT
2B1212NXT
2B1512NXT
2B2412NXT
2B0515NXT
2B0915NXT
2B1215NXT
2B1515NXT
2B2415NXT
2B0524NXT
2B0924NXT
1kVDC Isolation
Internal SMD Construction
UL94V-0 Package Material
Toroidal Magnetics
Efficiency to 85%
MODEL SELECTION
2A 05 05 N X T
①Product
Series
③Output
Voltage
⑤Fixed
Input
①
②
③
④
⑤
⑥
②Input
Voltage
④No
Pin
⑥SMD
Package
APPLICATIONS
2B1224NXT
2B1524NXT
2B2424NXT
2A0505NXT
2A0905NXT
2A1205NXT
2A1505NXT
2A2405NXT
2A0509NXT
2A0909NXT
2A1209NXT
2A1509NXT
2A2409NXT
2A0512NXT
2A0912NXT
2A1212NXT
2A1512NXT
2A2412NXT
2A0515NXT
2A0915NXT
2A1215NXT
2A1515NXT
2A2415NXT
2A0524NXT
2A0924NXT
2A1224NXT
2A1524NXT
2A2424NXT
Compared to standard 2 Watt packages,
space savings of 80% respectively 77% are
achieved by these 2A-NXT&2B-NXT SMD
Miniature DC/DC Converters. They have been
specifically designed for applications where
board space is at a premium,since these 2
Watt converters have only a slightly larger foot
print than conventional 1 Watt converters.
At efficiencies up to 80%, external cooling is
not needed, as the full output power is
available over the operating temperature
range -40°C to +85°C. All converters have an
I/O-Isolation of 1kVDC, allowing making them
suitable for many applications.
MICRODC R ESERVES THE COPYRIGHT
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 1 of 4
2A-NXT&2B-NXT
Series
Specifications (Core Operating Area)
Input Voltage Range
Output Voltage Accuracy
Line Voltage Regulation
Load Voltage Regulation
(10% to 100% full load)
Output Ripple and Noise (20MHz limited)
Operating Frequency
Efficiency at Full Load
No Load Power Consumption
Isolation Voltage
Rated Working Voltage
Isolation Capacitance
Isolation Resistance
Short Circuit Protection
Operating Temperature Range (free air convection)
Storage Temperature Range
Reflow Temperature
Relative Humidity
Package Weight
MTBF (+25℃)
(+85℃)
ROHS compliant (for more details see Application Notes)
MSL Level 1
B-NXT types
A-NXT types
B-NXT typ.
A-NXT typ.
(tested for 1 second)
(long term isolation)
3.3V output types
5V output type
9V, 12V, 15V, 24V output types
±10
±5
1.2%/1% of Vin max.
20% max.
15% max.
10% max.
150mVp-p max.
20kHz min. / 50kHz typ. / 85kHz max.
70% min. / 80% typ.
124mW min. / 186mW typ. / 250mW max.
159mW min. / 192mW typ. / 240mW max.
1000VDC min.
see Application Notes
40pF min. / 115pF max.
10 GΩ min.
1 Second
-40℃ to +85℃ (see Graph)
-55℃ to +125℃
245℃ (30 sec) max.
95% RH
2.1g
2.5g
886 x 10
3
hours
128 x 10
3
hours
}
Detailed Information see
Application Notes chapter "MTBF"
using MIL-HDBK 217F
using MIL-HDBK 217F
Typical Characteristics
AXX05NXT
AXX12NXT
AXX15NXT
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 2 of 4
2A-NXT&2B-NXT
Series
Typical Characteristics
BXX05NXT
BXX09NXT
BXX12NXT
BXX15NXT
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 3 of 4
2A-NXT&2B-NXT
Series
Derating-Graph(Ambient Temperature)
Package Style and Pinning (mm)
RoHS COMPLIANT INFORMATION
Microdc Professional Power Module,Inc.
Tel:0086-20-86000646 E-mail:tech@microdc.cn
Website:http://www.microdc.cn
Microdc Professional Power module,Inc.makes no representation that
the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or
future patent rights. Specifications are subject to change without notice.
©2010
Microdc Professional Power Module, Inc. Guangzhou
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300°C
for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte
Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this series are
backward compatible with Sn/Pb soldering systems.
REACH COMPLIANT INFORMATION
This series has proven that this product does not contain harmful chemicals, it also has harmful chemical
substances through the registration, inspection and approval.
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 4 of 4
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