Delta Electronics Power Supply Series DNM04 User Manual

FEATURES  
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High efficiency: 96% @ 5.0Vin, 3.3V/10A out  
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Small size and low profile: (SIP)  
50.8x 13.4x 8.5 mm (2.00” x 0.53” x 0.33”)  
Signle-in-line (SIP) packaging  
Standard footprint  
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Voltage and resistor-based trim  
Pre-bias startup  
Output voltage tracking  
No minimum load required  
Output voltage programmable from  
0.75Vdc to 3.3Vdc via external resistor  
Fixed frequency operation  
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Input UVLO, output OTP, OCP  
Remote ON/OFF  
Remote sense  
ISO 9001, TL 9000, ISO 14001, QS9000,  
OHSAS18001 certified manufacturing facility  
UL/cUL 60950 (US & Canada) Recognized,  
and TUV (EN60950) Certified  
CE mark meets 73/23/EEC and 93/68/EEC  
directives  
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Delphi DNM, Non-Isolated Point of Load  
DC/DC Power Modules: 2.8-5.5Vin, 0.75-3.3V/10A out  
OPTIONS  
The Delphi Series DNM04, 2.8-5.5V input, single output, non-isolated  
Point of Load DC/DC converters are the latest offering from a world  
leader in power system and technology and manufacturing -- Delta  
Electronics, Inc. The DNM04 series provides a programmable output  
voltage from 0.75V to 3.3V using an external resistor. The DNM series  
has flexible and programmable tracking and sequencing features to  
enable a variety of startup voltages as well as sequencing and tracking  
between power modules. This product family is available in a surface  
mount or SIP package and provides up to 10A of current in an industry  
standard footprint. With creative design technology and optimization of  
component placement, these converters possess outstanding electrical  
and thermal performance and extremely high reliability under highly  
stressful operating conditions.  
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Negative On/Off logic  
Tracking feature  
SIP package  
APPLICATIONS  
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Telecom / DataCom  
Distributed power architectures  
Servers and workstations  
LAN / WAN applications  
Data processing applications  
DATASHEET  
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ELECTRICAL CHARACTERISTICS CURVES  
100  
100  
95  
90  
85  
80  
75  
95  
90  
Vin=4.5V  
Vin=3.0V  
85  
Vin=5.0V  
Vin=5.0V  
Vin=5.5V  
Vin=5.5V  
80  
75  
1
2
3
4
5
6
7
8
9
10  
1
2
3
4
5
6
7
8
9
10  
OUTPUR CURRENT(A)  
OUTPUR CURRENT(A)  
Figure 1: Converter efficiency vs. output current (3.3V out)  
Figure 2: Converter efficiency vs. output current (2.5V out)  
100  
95  
95  
90  
85  
90  
Vin=2.8V  
80  
Vin=2.8V  
85  
80  
75  
Vin=5.0V  
Vin=5.5V  
75  
Vin=5.0V  
Vin=5.5V  
70  
65  
1
2
3
4
5
6
7
8
9
10  
1
2
3
4
5
6
7
8
9
10  
OUTPUR CURRENT(A)  
OUTPUR CURRENT  
(A)  
Figure 3: Converter efficiency vs. output current (1.8V out)  
Figure 4: Converter efficiency vs. output current (1.5V out)  
95  
90  
85  
95  
90  
85  
80  
80  
Vin=2.8V  
Vin=2.8V  
75  
75  
Vin=5.0V  
Vin=5.0V  
70  
Vin=5.5V  
Vin=5.5V  
70  
65  
65  
60  
1
2
3
4
5
6
7
8
9
10  
1
2
3
4
5
6
7
8
9
10  
OUTPUR CURRENT(A)  
OUTPUR CURRENT(A)  
Figure 5: Converter efficiency vs. output current (1.2V out)  
Figure 6: Converter efficiency vs. output current (0.75V out)  
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ELECTRICAL CHARACTERISTICS CURVES  
Figure 7: Output ripple & noise at 3.3Vin, 2.5V/10A out  
Figure 8: Output ripple & noise at 3.3Vin, 1.8V/10A out  
Figure 9: Output ripple & noise at 5Vin, 3.3V/10A out  
Figure 10: Output ripple & noise at 5Vin, 1.8V/10A out  
Figure 11: Turn on delay time at 3.3Vin, 2.5V/10A out  
Figure 12: Turn on delay time at 3.3Vin, 1.8V/10A out  
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ELECTRICAL CHARACTERISTICS CURVES  
Figure 13: Turn on delay time at 5Vin, 3.3V/10A out  
Figure 14: Turn on delay time at 5Vin, 1.8V/10A out  
Figure 15: Turn on delay time at remote turn on 5Vin, 3.3V/16A out  
Figure 16: Turn on delay time at remote turn on 3.3Vin, 2.5V/16A  
out  
Figure 17: Turn on delay time at remote turn on with external  
Figure 18: Turn on delay time at remote turn on with external  
capacitors (Co= 5000 µF) 5Vin, 3.3V/16A out  
capacitors (Co= 5000 µF) 3.3Vin, 2.5V/16A out  
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ELECTRICAL CHARACTERISTICS CURVES  
Figure 19: Typical transient response to step load change at  
2.5A/μS from 100% to 50% of Io, max at 5Vin, 3.3Vout  
(Cout = 1uF ceramic, 10μF tantalum)  
Figure 20: Typical transient response to step load change at  
2.5A/μS from 50% to 100% of Io, max at 5Vin, 3.3Vout  
(Cout =1uF ceramic, 10μF tantalum)  
Figure 21: Typical transient response to step load change at  
2.5A/μS from 100% to 50% of Io, max at 5Vin, 1.8Vout  
(Cout =1uF ceramic, 10μF tantalum)  
Figure 22: Typical transient response to step load change at  
2.5A/μS from 50% to 100% of Io, max at 5Vin, 1.8Vout  
(Cout = 1uF ceramic, 10μF tantalum)  
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ELECTRICAL CHARACTERISTICS CURVES  
Figure 23: Typical transient response to step load change at  
2.5A/μS from 100% to 50% of Io, max at 3.3Vin,  
2.5Vout (Cout =1uF ceramic, 10μF tantalum)  
Figure 24: Typical transient response to step load change at  
2.5A/μS from 50% to 100% of Io, max at 3.3Vin,  
2.5Vout (Cout =1uF ceramic, 10μF tantalum)  
Figure 25: Typical transient response to step load change at  
2.5A/μS from 100% to 50% of Io, max at 3.3Vin,  
1.8Vout (Cout =1uF ceramic, 10μF tantalum)  
Figure 26: Typical transient response to step load change at  
2.5A/μS from 50% to 100% of Io, max at 3.3Vin,  
1.8Vout (Cout = 1uF ceramic, 10μF tantalum)  
Figure 27: Output short circuit current 5Vin, 0.75Vout  
Figure 28:Turn on with Prebias 5Vin, 3.3V/0A out, Vbias =1.0Vdc  
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TEST CONFIGURATIONS  
DESIGN CONSIDERATIONS  
TO OSCILLOSCOPE  
Input Source Impedance  
L
V
I(+)  
To maintain low noise and ripple at the input voltage, it is  
critical to use low ESR capacitors at the input to the  
module. Figure 32 shows the input ripple voltage (mVp-p)  
for various output models using 200 µF(2 x100uF) low  
ESR tantalum capacitor (KEMET p/n: T491D107M016AS,  
AVX p/n: TAJD107M106R, or equivalent) in parallel with  
47 µF ceramic capacitor (TDK p/n:C5750X7R1C476M or  
equivalent). Figure 33 shows much lower input voltage  
ripple when input capacitance is increased to 400 µF (4 x  
100 µF) tantalum capacitors in parallel with 94 µF (2 x 47  
µF) ceramic capacitor.  
100uF  
2
Tantalum  
BATTERY  
V
I(-)  
Note: Input reflected-ripple current is measured with a  
simulated source inductance. Current is measured at  
the input of the module.  
Figure 29: Input reflected-ripple test setup  
COPPER STRIP  
The input capacitance should be able to handle an AC  
ripple current of at least:  
Vo  
Resistive  
Load  
1uF  
10uF  
tantalum ceramic  
SCOPE  
Vout  
Vin  
Vout  
Vin  
Irms = Iout  
1−  
Arms  
GND  
350  
300  
250  
200  
150  
100  
50  
Note: Use a 10μF tantalum and 1μF capacitor. Scope  
measurement should be made using a BNC cable.  
Figure 30: Peak-peak output noise and startup transient  
measurement test setup.  
5.0Vin  
3.3Vin  
CONTACT AND  
DISTRIBUTION LOSSES  
0
Vo  
V
I
0
1
2
3
4
II  
Io  
Vo  
Vin  
LOAD  
SUPPLY  
Output Voltage (Vdc)  
GND  
Figure 32: Input voltage ripple for various output models, IO =  
10 A (CIN = 2×100 µF tantalum // 47 µF ceramic)  
CONTACT RESISTANCE  
200  
150  
100  
Figure 31: Output voltage and efficiency measurement test  
setup  
Note: All measurements are taken at the module  
terminals. When the module is not soldered (via  
socket), place Kelvin connections at module  
terminals to avoid measurement errors due to  
contact resistance.  
50  
0
5.0Vin  
3.3Vin  
Vo× Io  
Vi × Ii  
η = (  
)×100 %  
0
1
2
3
4
Output Voltage (Vdc)  
Figure 33: Input voltage ripple for various output models, IO =  
10 A (CIN = 4×100 µF tantalum // 2×47 µF ceramic)  
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DESIGN CONSIDERATIONS (CON.)  
FEATURES DESCRIPTIONS  
The power module should be connected to a low  
ac-impedance input source. Highly inductive source  
impedances can affect the stability of the module. An  
input capacitance must be placed close to the modules  
input pins to filter ripple current and ensure module  
stability in the presence of inductive traces that supply  
the input voltage to the module.  
Remote On/Off  
The DNM/DNL series power modules have an On/Off  
pin for remote On/Off operation. Both positive and  
negative On/Off logic options are available in the  
DNM/DNL series power modules.  
For positive logic module, connect an open collector  
(NPN) transistor or open drain (N channel) MOSFET  
between the On/Off pin and the GND pin (see figure 34).  
Positive logic On/Off signal turns the module ON during  
the logic high and turns the module OFF during the logic  
low. When the positive On/Off function is not used, leave  
the pin floating or tie to Vin (module will be On).  
Safety Considerations  
For safety-agency approval the power module must be  
installed in compliance with the spacing and separation  
requirements of the end-use safety agency standards.  
For the converter output to be considered meeting the  
requirements of safety extra-low voltage (SELV), the  
input must meet SELV requirements. The power  
module has extra-low voltage (ELV) outputs when all  
inputs are ELV.  
For negative logic module, the On/Off pin is pulled high  
with an external pull-up 5kresistor (see figure 35).  
Negative logic On/Off signal turns the module OFF  
during logic high and turns the module ON during logic  
low. If the negative On/Off function is not used, leave the  
pin floating or tie to GND. (module will be On)  
The input to these units is to be provided with a  
maximum 15A time-delay fuse in the ungrounded lead.  
Vin  
Vo  
ION/OFF  
RL  
On/Off  
GND  
Figure 34: Positive remote On/Off implementation  
Vo  
Vin  
Rpull-up  
ION/OFF  
RL  
On/Off  
GND  
Figure 35: Negative remote On/Off implementation  
Over-Current Protection  
To provide protection in an output over load fault  
condition, the unit is equipped with internal over-current  
protection. When the over-current protection is  
triggered, the unit enters hiccup mode. The units  
operate normally once the fault condition is removed.  
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Vtrim= 0.7 0.1698×  
(
Vo 0.7525  
)
FEATURES DESCRIPTIONS (CON.)  
For example, to program the output voltage of a DNL  
module to 3.3 Vdc, Vtrim is calculated as follows  
Over-Temperature Protection  
The over-temperature protection consists of circuitry that  
provides protection from thermal damage. If the  
temperature exceeds the over-temperature threshold the  
module will shut down. The module will try to restart after  
shutdown. If the over-temperature condition still exists  
during restart, the module will shut down again. This  
restart trial will continue until the temperature is within  
specification  
Vtrim = 0.7 0.1698×  
(
3.3 0.7525 = 0.267V  
)
Vo  
RLoad  
TRIM  
Rtrim  
GND  
Remote Sense  
Figure 37: Circuit configuration for programming output voltage  
using an external resistor  
The DNM/DNL provide Vo remote sensing to achieve  
proper regulation at the load points and reduce effects of  
distribution losses on output line. In the event of an open  
remote sense line, the module shall maintain local sense  
regulation through an internal resistor. The module shall  
correct for a total of 0.5V of loss. The remote sense line  
impedance shall be < 10Ω.  
Vo  
Vtrim  
RLoad  
TRIM  
GND  
+
_
Distribution Losses  
Distribution Losses  
Vo  
Vin  
Figure 38: Circuit Configuration for programming output voltage  
using external voltage source  
Sense  
RL  
Table 1 provides Rtrim values required for some common  
output voltages, while Table 2 provides value of external  
voltage source, Vtrim, for the same common output  
voltages. By using a 1% tolerance trim resistor, set point  
tolerance of ±2% can be achieved as specified in the  
electrical specification.  
GND  
Distribution  
Distribution  
Figure 36: Effective circuit configuration for remote sense  
operation  
Output Voltage Programming  
Table 1  
The output voltage of the DNM/DNL can be programmed  
to any voltage between 0.75Vdc and 3.3Vdc by  
connecting one resistor (shown as Rtrim in Figure 37)  
between the TRIM and GND pins of the module. Without  
this external resistor, the output voltage of the module is  
0.7525 Vdc. To calculate the value of the resistor Rtrim  
for a particular output voltage Vo, please use the  
following equation:  
Vo(V)  
0.7525  
1.2  
Rtrim(K)  
Open  
41.97  
23.08  
15.00  
6.95  
1.5  
1.8  
2.5  
3.3  
3.16  
21070  
Rtrim =  
5110 Ω  
Table 2  
Vo 0.7525  
For example, to program the output voltage of the DNL  
Vo(V)  
0.7525  
1.2  
Vtrim(V)  
Open  
module to 1.8Vdc, Rtrim is calculated as follows:  
21070  
0.624  
0.573  
0.522  
0.403  
0.267  
Rtrim =  
5110 Ω = 15KΩ  
1.8 0.7525  
1.5  
DNL can also be programmed by apply a voltage  
between the TRIM and GND pins (Figure 38). The  
following equation can be used to determine the value of  
Vtrim needed for a desired output voltage Vo:  
1.8  
2.5  
3.3  
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FEATURE DESCRIPTIONS (CON.)  
The output voltage tracking feature (Figure 40 to Figure  
42) is achieved according to the different external  
connections. If the tracking feature is not used, the  
TRACK pin of the module can be left unconnected or  
tied to Vin.  
The amount of power delivered by the module is the  
voltage at the output terminals multiplied by the output  
current. When using the trim feature, the output voltage  
of the module can be increased, which at the same  
output current would increase the power output of the  
module. Care should be taken to ensure that the  
maximum output power of the module must not exceed  
the maximum rated power (Vo.set x Io.max P max).  
For proper voltage tracking, input voltage of the tracking  
power module must be applied in advance, and the  
remote on/off pin has to be in turn-on status. (Negative  
logic: Tied to GND or unconnected. Positive logic: Tied  
to Vin or unconnected)  
Voltage Margining  
Output voltage margining can be implemented in the  
DNL modules by connecting a resistor, R margin-up, from  
the Trim pin to the ground pin for margining-up the  
output voltage and by connecting a resistor, Rmargin-down,  
from the Trim pin to the output pin for margining-down.  
Figure 39 shows the circuit configuration for output  
voltage margining. If unused, leave the trim pin  
unconnected. A calculation tool is available from the  
evaluation procedure which computes the values of R  
margin-up and Rmargin-down for a specific output voltage and  
margin percentage.  
PS1  
PS2  
PS1  
PS2  
Figure 40: Sequential  
Vo  
Vin  
PS1  
PS2  
PS1  
PS2  
Rmargin-down  
Q1  
Trim  
GND  
On/Off  
Rmargin-up  
Q2  
Rtrim  
Figure 41: Simultaneous  
Figure 39: Circuit configuration for output voltage margining  
PS1  
PS1  
PS2  
Voltage Tracking  
-V△  
PS2  
The DNM family was designed for applications that have  
output voltage tracking requirements during power-up  
and power-down. The devices have a TRACK pin to  
implement three types of tracking method: sequential  
start-up, simultaneous and ratio-metric. TRACK  
simplifies the task of supply voltage tracking in a power  
system by enabling modules to track each other, or any  
external voltage, during power-up and power-down.  
Figure 42: Ratio-metric  
By connecting multiple modules together, customers can  
get multiple modules to track their output voltages to the  
voltage applied on the TRACK pin.  
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FEATURE DESCRIPTIONS (CON.)  
Sequential Start-up  
Ratio-Metric  
Ratio–metric (Figure 42) is implemented by placing the  
voltage divider on the TRACK pin that comprises R1 and  
R2, to create a proportional voltage with VoPS1 to the Track  
pin of PS2.  
Sequential start-up (Figure 40) is implemented by placing  
an On/Off control circuit between VoPS1 and the On/Off pin  
of PS2.  
For Ratio-Metric applications that need the outputs of PS1  
and PS2 reach the regulation set point at the same time.  
PS1  
PS2  
Vin  
Vin  
The following equation can be used to calculate the value  
of R1 and R2.  
VoPS1  
VoPS2  
R3  
On/Off  
The suggested value of R2 is 10k.  
R1  
Q1  
C1  
On/Off  
R2  
VO,PS 2  
R2  
=
VO,PS1 R1 + R2  
PS1  
PS2  
Vin  
Vin  
Simultaneous  
VoPS1  
VoPS2  
R1  
Simultaneous tracking (Figure 41) is implemented by  
using the TRACK pin. The objective is to minimize the  
voltage difference between the power supply outputs  
during power up and down.  
TRACK  
On/Off  
R2  
On/Off  
The high for positive logic  
The low for negative logic  
The simultaneous tracking can be accomplished by  
connecting VoPS1 to the TRACK pin of PS2. Please note  
the voltage apply to TRACK pin needs to always higher  
than the VoPS2 set point voltage.  
PS2  
PS1  
Vin  
Vin  
VoPS1  
VoPS2  
TRACK  
On/Off  
On/Off  
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THERMAL CONSIDERATIONS  
Thermal management is an important part of the system  
design. To ensure proper, reliable operation, sufficient  
cooling of the power module is needed over the entire  
temperature range of the module. Convection cooling is  
usually the dominant mode of heat transfer.  
Hence, the choice of equipment to characterize the  
thermal performance of the power module is a wind  
tunnel.  
Thermal Testing Setup  
Delta’s DC/DC power modules are characterized in  
heated vertical wind tunnels that simulate the thermal  
environments encountered in most electronics  
equipment. This type of equipment commonly uses  
vertically mounted circuit cards in cabinet racks in which  
the power modules are mounted.  
The following figure shows the wind tunnel  
characterization setup. The power module is mounted  
on a test PWB and is vertically positioned within the  
wind tunnel. The height of this fan duct is constantly kept  
at 25.4mm (1’’).  
Thermal Derating  
Heat can be removed by increasing airflow over the  
module. To enhance system reliability, the power  
module should always be operated below the maximum  
operating temperature. If the temperature exceeds the  
maximum module temperature, reliability of the unit may  
be affected.  
PWB  
FACING PWB  
MODULE  
AIR VELOCITY  
AND AMBIENT  
TEMPERATURE  
MEASURED BELOW  
THE MODULE  
50.8 (2.0”)  
AIR FLOW  
12.7 (0.5”)  
25.4 (1.0”)  
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)  
Figure 43: Wind tunnel test setup  
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DNM04S0A0R10(Standard) Output Current vs. Ambient Temperature and Air Velocity  
THERMAL CURVES  
Output Current(A)  
@ Vin = 3.3V, Vo = 2.5V (Either Orientation)  
12  
10  
8
Natural  
Convection  
6
4
2
0
60  
65  
70  
75  
80  
85  
Ambient Temperature ()  
Figure 44: Temperature measurement location  
* The allowed maximum hot spot temperature is defined at 125℃  
Figure 47: DNM04S0A0R10 (Standard) Output current vs.  
ambient temperature and air velocity@Vin=3.3V,  
Vo=2.5V(Either Orientation)  
DNM04S0A0R10(Standard) Output Current vs. Ambient Temperature and Air Velocity  
Output Current(A)  
@ Vin = 5V, Vo = 3.3V (Either Orientation)  
12  
10  
DNM04S0A0R10(Standard) Output Current vs. Ambient Temperature and Air Velocity  
Output Current(A)  
@ Vin = 3.3V, Vo = 0.75V (Either Orientation)  
12  
Natural  
10  
Convection  
Natural  
Convection  
8
6
4
2
0
8
6
4
2
0
60  
65  
70  
75  
80  
85  
Ambient Temperature ()  
60  
65  
70  
75  
80  
85  
Ambient Temperature ()  
Figure 45: DNM04S0A0R10 (Standard) Output current vs.  
ambient temperature and air velocity@Vin=5V, Vo=3.3V(Either  
Orientation)  
Figure 48: DNM04S0A0R10 (Standard) Output current vs.  
ambient temperature and air velocity@ Vin=3.3V,  
Vo=0.75V(Either Orientation)  
DNM04S0A0R10(Standard) Output Current vs. Ambient Temperature and Air Velocity  
Output Current(A)  
@ Vin = 5.0V, Vo = 0.75V (Either Orientation)  
12  
10  
Natural  
Convection  
8
6
4
2
0
60  
65  
70  
75  
80  
85  
Ambient Temperature ()  
Figure 46: DNM04S0A0R10(Standard) Output current vs.  
ambient temperature and air velocity@Vin=5V, Vo=0.75V(Either  
Orientation)  
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MECHANICAL DRAWING  
SMD PACKAGE (OPTIONAL)  
SIP PACKAGE  
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PART NUMBERING SYSTEM  
DNM  
04  
S
0A0  
R
10  
P
F
D
Product  
Series  
Numbers of  
Outputs  
Output  
Voltage  
Package  
Type  
Output On/Off logic  
Current  
Input Voltage  
Option Code  
F- RoHS 6/6  
(Lead Free)  
DNL - 16A  
DNM - 10A  
DNS - 6A  
04 - 2.8~5.5V  
10 - 8.3~14V  
S - Single  
0A0 -  
R - SIP  
10 - 10A  
N- negative  
P- positive  
D - Standard Function  
Programmable S - SMD  
MODEL LIST  
Efficiency  
5.0Vin, 100% load  
Model Name  
Packaging  
Input Voltage  
Output Voltage Output Current  
DNM04S0A0R10PFD  
DNM04S0A0R10NFD  
DNM04S0A0S10PFD  
DNM04S0A0S10NFD  
SIP  
SIP  
2.8 ~ 5.5Vdc  
2.8 ~ 5.5Vdc  
2.8 ~ 5.5Vdc  
2.8 ~ 5.5Vdc  
0.75 V~ 3.3Vdc  
0.75 V~ 3.3Vdc  
0.75 V~ 3.3Vdc  
0.75 V~ 3.3Vdc  
10A  
10A  
10A  
10A  
96.0% (3.3V)  
96.0% (3.3V)  
96.0% (3.3V)  
96.0% (3.3V)  
SMD  
SMD  
USA:  
Telephone:  
East Coast: (888) 335 8201  
West Coast: (888) 335 8208  
Fax: (978) 656 3964  
Asia & the rest of world:  
Telephone: +886 3 4526107 ext 6220  
Fax: +886 3 4513485  
Europe:  
Phone: +41 31 998 53 11  
Fax: +41 31 998 53 53  
WARRANTY  
Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available upon  
request from Delta.  
Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by Delta  
for its use, nor for any infringements of patents or other rights of third parties, which may result from its use. No license  
is granted by implication or otherwise under any patent or patent rights of Delta. Delta reserves the right to revise these  
specifications at any time, without notice.  
DS_DNM04SIP10_07162008D  
16  
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