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NTA SERIES
Isolated 1W Dual Output SM DC/DC Converters
SELECTION GUIDE
FEATURES
■Wide Temperature Performance at
Full 1Watt Load, -40°C to 85°C
■Lead Frame Technology
■Maximum Reflow Temperature 280°C
■Dual Isolated Output
■1kVDC Isolation
■Efficiency to 78%
■Power Density 1.36W/cm3
■5V & 12V Input
■5V, 9V, 12V and 15V Output
■Footprint Over Pins 1.64cm2
■UL 94V-0 Package Material
■No Heatsink Required
■Internal SMD Construction
■Toroidal Magnetics
■Plastic Encapsulated
■MTTF up to 2.1 Million Hours
■Custom Solutions Available
■Multi Layer Ceramic Capacitors
■Lead Free Compatible
DESCRIPTION
The NTA series of miniature surface mounted
DC/DC Converters employ leadframe
technology and transfer moulding techniques
to bring all of the benefits of IC style
packaging to hybrid circuitry. The devices are
fully compatible with CECC00802 to 280°C
which allows them to be placed and reflowed
with IC’s, thus reducing time and cost in
production. Co-planarity of the lead positions
is based upon IEC 191-6:1990. The devices
are suitable for all applications where high
volume production is envisaged.
Nominal Input
Input Output Output Current at Isolation
Voltage Voltage Current Rated Load Efficiency Capacitance MTTF1
Order Code5(V) (V) (mA) (mA) (%) (pF) kHrs
NTA0303M 3.3 3.3 ±163 402 75 29 1005
NTA0305M 3.3 5.0 ±100 388 78 30 399
NTA0309M 3.3 9.0 ±55 405 75 34 827
NTA0312M 3.3 12 ±42 390 77 40 375
NTA0315M 3.3 15 ±33 392 77 42 206
NTA0503M 53.3±163 259 77 31 964
NTA0505M 55±100 290 69 33 1697
NTA0505ME 55±100 251 80 42 367
NTA0509M 59±55267 75 38 682
NTA0512M 512±42260 77 44 343
NTA0515M 515±33256 78 43 188
NTA1205M 12 5 ±100 121 69 50 559
NTA1209M 12 9 ±55 113 74 72 375
NTA1212M 12 12 ±42 111 75 89 243
NTA1215M 12 15 ±33 110 76 100 154
When operated with additional external load capacitance the rise time of the input voltage will determine the
maximum external capacitance value for guaranteed start up. The slower the rise time of the input voltage the
greater the maximum value of the additional external capacitance for reliable start up.
1Calculated using MIL-HDBK-217F with nominal input voltage at full load.
2See derating curve.
312V input types have typically 3% less load regulation change.
4Supply voltage must be discontinued at the end of the short circuit duration.
5If components are required in tape and reel format suffix order code with -R, e.g. NTA0505M-R
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
Parameter Conditions MIN TYP MAX Units
Continuous operation, 3V input types 2.97 3.3 3.63
Voltage Range Continuous operation, 5V input types 4.5 5 5.5 V
Continuous operation, 12V input types 10.8 12 13.2
Reflected Ripple Current 41 50 mA p-p
Short circuit duration41second
Internal power dissipation 700mW
Lead temperature 1.5mm from case for 10 seconds 300°C
Input Voltage VIN , NTA03 types 5.5V
Input Voltage VIN , NTA05 types 7V
Input voltage VIN , NTA12 types 15V
INPUT CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
Parameter Conditions MIN TYP MAX Units
Rated Power2TA= -40°C to 85°C 1.0 W
Voltage Set Point
Accuracy See tolerance envelope
Line regulation High VIN to low VIN 1.0 1.2 %/%
10% load to rated load, 0303M & 0503M 10 15
10% load to rated load, 5V output types 10 12
10% load to rated load, 0309M 9.0 10
Load Regulation310% load to rated load, 0509M & 1209M 6.5 8.0 %
10% load to rated load, 0312M & 0315M 11 14
10% load to rated load, 0512M & 1212M 6.0 8.5
10% load to rated load, 0515M & 1215M 6.0 7.0
BW=DC to 20MHz, 3.3V output types,
NTA0305 & NTA0505ME 40 80
BW=DC to 20MHz, all other 5V output types 50 100
Ripple and Noise BW=DC to 20MHz, 9V output types 35 80 mV p-p
BW=DC to 20MHz, 12V output types 50 110
BW=DC to 20MHz, 15V output types 65 110
OUTPUT CHARACTERISTICS
C&D Technologies (NCL) Ltd
Tanners Drive, Blakelands North
Milton Keynes MK14 5BU, England
Tel: +44 (0)1908 615232
Fax:+44 (0)1908 617545
email: info@cdtechno-ncl.com
www.cdpoweronline.com
C&D Technologies Inc.
3400 E Britannia Drive, Tucson,
Arizona 85706, USA
Tel: +1 (800) 547-2537
Fax: +1 (520) 741-4598
email: sales@cdtechno.com
NTA SERIES
Isolated 1W Dual Output SM DC/DC Converters
C&D Technologies (NCL) Limited reserve the right to alter or improve the
specification, internal design or manufacturing process at any time, without
notice. Please check with your supplier or visit our web site to ensure that
you have the current and complete specification for your product before use.
© C&D Technologies (NCL) Limited 2004 NDC NTA.4
No part of this publication may be copied, transmitted or stored in a
retrieval system or reproduced in any way including, but not limited to,
photography, photocopy, magnetic or other recording means, without prior
written permission from C&D Technologies (NCL) Limited.
Instructions for use are available from www.cdpoweronline.com
ISOLATION CHARACTERISTICS
GENERAL CHARACTERISTICS
TEMPERATURE CHARACTERISTICS
PERFORMANCE CHARACTERISTICS
Parameter Conditions MIN TYP MAX Units
Isolation Test Voltage Flash tested for 1 second 1000 VDC
Resistance Viso=1000VDC 10 GΩ
Parameter Conditions MIN TYP MAX Units
0312M, 0315M 100
Switching Frequency 0303M, 0305M, 0503M, 0505ME 110 kHz
All other variants 115
Parameter Conditions MIN TYP MAX Units
Specification All output types -40 85 °C
Storage -55 125 °C
0305M, 0505ME, 0312M, 0315M
19
Case Temperature 0303M, 0309M, 0503M 25 °C
above ambient 0505M, 1205M 46
All other variants 35
Cooling Free air convection
temperature derating graph
2.0
1.5
1.0
0.5
0
Output Power (W)
Tolerance Envelope - 3.3V output types
+10%
+5%
V nominal +2.5%
-2.5%
-7.5%
Output Voltage
10 50 100
Output Load Current (%)
Tolerance Envelope - all other types
+10%
+5%
V nominal +2.5%
-2.5%
-7.5%
Output Voltage
10 50 100
Output Load Current (%) -40 0 50 100 150
Ambient Temperature (°C)
85°C
Safe Operating Area
MECHANICAL DIMENSIONS
All dimensions in inches (mm) ±0.01(0.25). All pins on a 0.10(2.54) pitch.
0.600(15.24)
0.400
(10.16)
0.441
0.409
(11.20)
(10.40)
0.260
(0.234) 6.60
(5.95)
0.026(0.65)
0.022(0.55)
0.012(0.30)
0.008(0.20)
0.074
(1.875) MAX
DETAIL A
DETAIL A
0.059(1.50)
0.047(1.20)
0.303
(7.70)
0.100(2.54)
0.083(2.10)
0.020(0.5)
REFERENCE
PLANE
±5.00°
0.010(0.25)
0.004(0.10)
(0.110)2.79MAX
1357
12
9
10141618
0.004(0.1) S
0.008(0.2)M
PS
P
10 PINS
SEATING PLANE
S
NTA0505M
XYYWW
(0.250)
0.230 (6.35)
5.85
PIN
1GND
3V
IN
5NA
70V
9-V
10 NA
12 +V
14 NA
16 NA
18 NA
Weight:1.53g
