NDL SERIES
Isolated 2W Wide Input Single Output DC-DC Converters
SELECTION GUIDE
Nominal Rated
Input
Output
Voltage Voltage
Output Current
1
Min Load
3
Full Load
Input
Current
2
Full Load
MTTF
4
Order Code
NDL0505S
NDL0509S
NDL0512S
NDL0515S
NDL1205S
NDL1209S
NDL1212S
NDL1215S
NDL2405S
NDL2409S
NDL2412S
NDL2415S
NDL4805S
NDL4809S
NDL4812S
NDL4815S
FEATURES
s
2:1 Wide Range Voltage Input
s
Continuous Short Circuit Protection
with Current Foldback
s
Operating Temperature Range
–40°C to 85°C
s
0.5% Regulation
s
1kVDC Isolation
s
Efficiency to 83%
s
5V, 12V, 24V & 48V Nominal Input
s
5V, 9V, 12V & 15V Output
s
Power Density 0.9W/cm
s
External Control
s
No Electrolytic Capacitors
s
Low Noise
s
Fully Encapsulated
DESCRIPTION
The NDL series is a range of high
performance miniature DC-DC converters
having regulated outputs over the wide
temperature range of –40°C to 85°C. The
input voltage range is 2:1 with the output
power at 2 watts and the input to output
isolation is 1kVDC. Continuous short circuit
protection, external control and extremely
small SIP packaging provide state of the art
functionality. The use of ceramic capacitors
and a ceramic substrate, with a tough chip
and wire bonded MOSFET power transistor
die and SMD construction, provide genuine
high reliability. Nominal input voltages of
5,12,24 and 48V with output voltages of
5,9,12 and 15V are available as standard
with custom parts on request. The plastic case
is rated to UL 94V-0 with encapsulant to UL
94V-1. Connection pins are phosphor bronze
with a 60/40 tin lead solder dipped finish.
3
(V)
5
5
5
5
12
12
12
12
24
24
24
24
48
48
48
48
(V)
5
9
12
15
5
9
12
15
5
9
12
15
5
9
12
15
(mA)
100
55
42
33
100
55
42
33
100
55
42
33
100
55
42
33
(mA)
400
222
167
134
400
222
167
134
400
222
167
134
400
222
167
134
(mA)
606
558
559
549
228
211
208
206
112
102
100
100
57
52
51
51
MIN
(%)
66
71
71
73
73
79
80
81
74
81
81
83
73
80
81
82
TYP
(pF)
26
27
26
27
39
38
47
47
37
40
51
58
39
40
53
65
MAX
kHrs
2015
1998
1980
1965
1994
1981
1961
1947
1722
1711
1696
1685
1719
1709
1694
1683
Units
INPUT CHARACTERISTICS
Parameter
Conditions
Voltage Range
Reflected
Ripple
Current
All NDL05 Types
All NDL12 Types
All NDL24 Types
All NDL48 Types
All NDL05 types when
All NDL12 types when
All NDL24 types when
All NDL48 types when
Conditions
5
4.5
9
18
36
100µF at input
100µF at input
10µF at input
10µF at input
5
12
24
48
300
140
TYP
9
18
36
72
250
150
380
170
MAX
VDC
mA p-p
OUTPUT CHARACTERISTICS
Parameter
Units
All NDL 05/12 types with external
input/output capacitors
All NDL 24/48 types with external
input/output capacitors
All NDL 05/12 types, Low line to high line,
With external input/output capacitors
Line Regulation
All NDL 24/48 types, Low line to high line,
With external input/output capacitors
All NDL 05/12 types, Minimum load to rated load,
With external input/output capacitors
Load Regulation
All NDL 24/48 types, Minimum load to rated load,
With external input/output capacitors
B/W=20Hz to 300kHz
Ripple
With external input/output capacitors
All NDL 05 types, B/W=DC to 100MHz
With external input/output capacitors
All NDL 12 types, B/W=DC to 100MHz
Noise
With external input/output capacitors
All NDL 24/48 types, B/W=DC to 100MHz
With external input/output capacitors
Shutdown Power V
IN
nominal
Voltage Set
Point Accuracy
±1
±2
0.05
0.04
0.2
0.2
5
20
110
50
±5
±5
0.5
0.4
0.75
0.75
10
35
170
100
2.8
mW
mV p-p
%
mV rms
%
%
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection
Lead temperature 1.5mm from case for 10 seconds
Control pin input current
Input voltage 05 types
Input voltage 12 types
Input voltage 24 types
Input voltage 48 types
continuous
300°C
10mA
10V
20V
40V
80V
www.dc-dc.com
1 Refer to power derating graph for operation of 5V input types at 4.5 to 6V.
2 Measured at full load with external input/output capacitors, refer to recommended test circuit.
3 A lower load condition is entirely safe but higher levels of output ripple will be experienced.
4 Calculated using MIL-HDBK-217F with nominal input voltage at full load.
5 Refer to recommended test circuit for external input/output capacitors.
All specifications typical at T
A
=25°C, nominal input voltage and rated output current unless otherwise specified.
NDL SERIES
Isolated 2W Wide Input Single Output DC-DC Converters
ISOLATION CHARACTERISTICS
Parameter
Conditions
MIN
TYP
MAX
Units
CTRL (PIN 3)
1000
1
VDC
GΩ
Provides an on/off function. The converter
is on when CTRL is not connected or high
impedance (Z). The CTRL pin will turn the
converter off as indicated in general
characteristics.
Isolation Test Voltage
Resistance
Flash tested for 1 second
Viso=1000VDC
GENERAL CHARACTERISTICS
Parameter
Conditions
MIN
TYP
MAX
Units
Swiching Frequency
Control Pin (CTRL)
Input Current
MAX rated load to MIN rated load 100
Control voltage applied via 1k0 resistor,
output voltage must reduce to 0V
600
4.0
6.0
kHz
mA
CS (PIN 8)
Additional capacitance, up to 100uF can be
added from CS to pin 7. A low ESR
capacitor if fitted will precede the output filter
inductor and will improve ripple and noise.
ENVIRONMENTAL
Parameter
Conditions
MIN
TYP
MAX
Units
Operation
Storage
Cooling
-40
-50
Free air convection
85
130
°C
°C
RECOMMENDED TEST CIRCUIT
V
IN
+V
OUT
100µF, 25V
Philips Part No.
13556101
OV
NDL05 POWER DERATING CURVE
2.5
2.0
1.75
1.5
1.0
0.5
0
4.5 5
C
IN
NDL
C
OUT
GND
5V & 12V:
C
IN
100µF, 25V Philips Part No.13556101
24V & 48V:
C
IN
10µF, 200V Philips Part No.15162109
6
7
Input Voltage (V)
8
9
MECHANICAL DIMENSIONS
21.80
9.20
3.20
2.01±0.50
0.30 max
0.20 min
NDL4805S
11.10
PIN
1 GND
2
V
IN
3
CTRL
5*
IC
6 +V
OUT
7
0V
8
C
S
Weight: 5.0g
XYYWW
1 2
4.60
3.60
3
2.54
5
6
7
8
0.55
0.45
*Pin 5 is internally connected and must have no external connection
All dimensions in mm XX.XX ±0.25mm. All pins on a 2.54mm pitch and
within ±0.25mm of true position.
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 2002
NDC NDL.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.dc-dc.com
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: http://www.dc-dc.com
C&D Technologies (NCL), Inc.
3400 E Britannia Drive, Tucson,
Arizona 85706, USA
Tel: +1 (800) 547-2537
Fax: +1 (520) 741-4598
email: sales@cdtechno.com
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