NGA SERIES
Non-Isolated Wide Input DC/DC Converters
SELECTION GUIDE
1
Nominal
Input Voltage
Mechanical
Dimensions
Output
Current
Nominal
Input Current
@ Full Load
Power
Consumption @
Shutdown
Nominal
Efficiency
Output
Voltage
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
Order Code
NGA10S15018S
NGA10S15025S
NGA10S15033S
NGA10S15050S
NGA10S15050S
2
(V)
15
15
15
15
15
15
15
15
15
(V)
1.8
2.5
3.3
5.0
5.0
1.8
2.5
3.3
5.0
5.0
A
0
0
0
0
0
0
0
0
0
0
mA
mW
%
2.0 847 280 160 0.5 4.8 16.1 89 81
2.0 1142 380 210 0.5
2.0 1478 480 269 0.5
2.0 1493 705 388 1.0
2.0 1493 705 388 1.0
2.0 847 280 160 0.5
2.0 1142 380 210 0.5
2.0 1478 480 269 0.5
2.0 1493 705 388 1.0
2.0 1493 705 388 1.0
4.8 16.1 92
4.8 16.1 94
4.8 16.1 95
4.8 16.1 95
4.8 16.1 89
4.8 16.1 92
4.8 16.1 94
4.8 16.1 95
4.8 16.1 95
85
88
92
92
81
85
88
92
92
1
1
1
1
1
2
2
2
2
2
NGA10S15018D
FEATURES
■
Industry Standard Footprint
■
Short Circuit Protection
■
Efficiency to 95%
■
Wide Input Range
■
1.8V, 2.5V, 3.3V & 5V Output
■
Operating Temperature Range
–40°C to 85°C
■
SMD Construction
■
Optional Shutdown & Trim Pins
(NGA10S15050SE Version)
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 85°C
without the need for external heatsinking
while the synchronus rectification design
yields excellent efficiencies up to 95%.
NGA10S15025D
NGA10S15033D
NGA10S15050D
NGA10S15050D
2
15
INPUT CHARACTERISTICS
1
Parameter
Conditions
MIN
TYP
MAX
Units
Continuous operation
4.75
Voltage Range 1.8,2.5 & 3.3V output types
Continuous operation NGA10S15050S
7.0
Continuous operation NGA10S15050SE Variable
3
1.8V output types
Reflected Ripple 2.5V output types
Current
3.3V output types
5.0V output types
15
15
15
29
49
48
99
28
28
28
VDC
mA p-p
OUTPUT CHARACTERISTICS
1
Parameter
Conditions
MIN
TYP
MAX
Units
Rated Power
Voltage Set
Point Accuracy
Line Regulation
T
A
= –40°C to 85°C
±1.5
0.2
1.5
40
10
±5.0
0.5
2.0
70
W
%
%/%
%
mVp-p
Low line to high line,
with external input/output capacitors,
refer to test circuit
10% load to 100% load,
Load Regulation with external input/output capacitors,
refer to test circuit
BW = DC to 20MHz
Ripple & Noise With external input/output capacitors,
refer to test circuit
ABSOLUTE MAXIMUM RATINGS
Short circuit protection
Internal power dissipation
Lead temperature 1.5mm from case for 10 seconds
Input Voltage V
IN
Minimum load
Output Trim Control
Shutdown Control
Continuous
1.1W
300°C
28V
0%
0V to +5V relative to 0V
–0.3V to +28V relative to 0V
ENVIRONMENTAL
1
Parameter
Conditions
MIN
TYP
MAX
Units
Operation
Storage
PCB Temperature above Ambient
– 40
– 50
40
85
125
°C
°C
°C
www.cdpoweronline.com
1 Specifications typical at T
A
=25°C, nominal input voltage and rated output current unless otherwise specified.
2 If optional V
ADJ
and SD pin are required (as indicated in the mechanical dimensions diagram) suffix the part
number with an E when ordering, i.e. NGA10S1505SE & NGA10S1505DE.
3. Supply voltage should exceed output voltage by 1.45V.
NGA SERIES
Non-Isolated Wide Input DC/DC Converters
MECHANICAL DIMENSIONS - 1
3(5) Pin SIP Package Style
0.825
(20.96)
0.220(5.60)
Recommended Footprint Details
0.049(2.54)
0.045(1.15)
Ø
0.846
(21.49)
0.846
(21.49)
Ø 0.004(0.10)
0.100 (2.54)
5* 4
0.312
(7.92)
0.146±0.020
(3.70±0.50)
3
2
1
*
0.020±0.002
(0.50±0.05)
0.149(3.78)
0.100(2.54)
All pins on a 0.1(2.54) pitch
and within 0.01(0.25) of true position.
0.1
(2.54)
0.014±0.020
(0.35±0.05)
PIN CONNECTIONS
Pin Number
Weight: 4.0g
Unless otherwise stated all dimensions in inches(mm) ±0.01(0.25).
* Optional pins available on NGA10S15050SE only.
1*
SD
2
V
IN
3
GND
4
V
OUT
5*
V
ADJ
MECHANICAL DIMENSIONS - 2
3(5) Pin DIP Package Style
0.825 (20.96)
0.400
(10.16)
6
7
0.222±0.020
(5.65±0.50)
7
6
Recommended Footprint Details
0.400
(10.16)
0.846
(21.49)
0.846
±0.002
(21.49
±0.50)
0.753
(19.14)
0.753
(19.14)
5* 4
0.312
(7.92)
3
2 1
*
0.1
(2.54)
0.020±0.002
(0.50±0.05)
0.010±0.002
(0.25±0.05)
1 2
*
3 4
5*
0.100(2.54)
0.049(2.54)
Ø
0.045(1.15)
Ø 0.004(0.10)
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)
0.267(6.77)MAX
Weight: 4.0g
Unless otherwise stated all dimensions in inches(mm) ±0.01(0.25).
* Optional pins available on NGA10S15050DE only.
PIN CONNECTIONS
Pin Number
1*
SD
2
V
IN
3
4
5*
V
ADJ
6
NC
7
NC
GND V
OUT
NGA SERIES
Non-Isolated Wide Input DC/DC Converters
TERMINOLOGY
TRANSIENT RESPONSE
Time for V
OUT
to be within 1% of V
NOM
V
25% +V
OUT
75%
where: V
NOM
=
OUT
2
GENERAL CHARACTERISTICS
1
Parameter
Conditions
MIN
TYP
MAX
Units
Switching Frequency
50% load change, 1.8V output types
Transient Response
MAX Over-Shoot
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
Transient Response
MAX Under-Shoot
50% load change, 2.5V output types
50% load change, 3.3V output types
50% load change, 5.0V output types
Under Voltage
Lock Out
Start Delay
ESD
1.8, 2.5 & 3.3V output types
5.0V output types
V
IN
MIN to V
IN
MAX
400VDC from 100pF capacitor
via 1500Ω resistance
270
300
90(160)
84(145)
83(130)
75(40)
64(160)
86(145)
84(120)
74(80)
4.0
5.0
100
330
kHz
OVER-SHOOT/UNDER-SHOOT
MAX deviation from final steady state output.
mV(µs)
START DELAY
Typical rise time (ms) after control pin
high with valid input.
mV(µs)
MEAN TIME TO FAILURE (MTTF)
2
Part No
25°C
85°C
Units
V
ms
NGA10S15018
NGA10S15025
NGA10S15033
NGA10S15050
1464
1463
1463
1461
512
512
512
512
KHrs
Meets MIL-STD-833E
method 3015.7
APPLICATION NOTES
EXTERNAL CAPACITANCE
External capacitors are necessary in order to
guarantee stability and full
parametric performance over the full line and
load range. All parts have
been tested and characterised using the
following values and test circuit.
Value
C
IN
100µF, 50V
1
contacts. To enable the device output the
shutdown pin should be left floating or taken
no less than +1.5V to MAX (+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 the 0V in order to avoid the risk of
A resistor (R
D
) between the trim pin and the
output pin will adjust the output voltage
between +5V to +1.8V.
1 = (22(1.028V
O
–1))
–1
–0.011
R
D
V
IN
V
OUT
R
D
NGA
V
ADJ
C
OUT
100µF, 10V
OFF
NGA
SD
BC182 or equiv
10nF
(optional)
ON
0V
A resistor (R
U
) between the trim pin and the
0V pin will adjust the device output from
+5V to +5.5V.
1 = (1.02V
O
)–1
91
R
U
V
IN
0.0455
TEST
CIRCUIT
V
IN
+
C
IN
NGA
+
V
OUT
C
OUT
TTL
1KΩ
injecting noise into the device circuit.
GND
GND
VOLTAGE TRIMMING
The trimming (adjust) input on the device
allows output voltage adjustment to within
±5%
2
of the desired V
OUT
using a resistor
with a value determined by the following
equations.
When open circuit, the output will be +5V.
NGA
V
ADJ
R
U
V
OUT
SHUTDOWN
When the shutdown pin is shorted to the 0V,
the device’s output will be disabled. To
shutdown the device the pin should be taken
below 0.8V using either an open collector
pull down or by using isolated relay
SD
0V
1 Specifications typical at T
A
=25°C, nominal input voltage and rated output current unless otherwise specified.
2 Accuracy of adjustment is subject to tolerance of resistors and initial output accuracy.
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 NGA.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
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
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