www.murata-ps.com
PWR1726AC
1.5 Watt Unregulated DC/DC Converter
DESCRIPTION
FEATURES
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8000v Isolation Test Voltage
No External Parts Required
Remote On/Off
Low-Barrier Capacitance
RoHS Compliant
Synchronizable
APPLICATIONS
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Biomedical Data Acquisition
Industrial Process Equipment
Data Acquisition
Test Equipment
Portable Equipment
The PWR1726AC is a single-channel, bipolar output DC/DC/
converter designed for those applications where high-isolation
voltage and low-barrier capacitance are critical for system reliability
and integrity.
Calculated mean-time-to-failure (MTTF) is in excess of 100
years at an ambient temperature of +25°C and at rated output
power. The performance of the PWR1726AC is not derated over its
entire specified temperature range of -25°C to +85°C.
Synchronization of the PWR1726AC may be accomplished
simply by connecting the Sync-In pin of one unit to the Sync-In pin
of another unit. Up to 8 converters may be synchronized in this
manner.
The PWR1726AC provides a plus and minus output voltage
that is approximately equal to the magnitude of the input voltage.
The unit operates over an input voltage range of 7VDC to 16VDC.
Each PWR1726AC isolation barrier is tested per the method
set forth by UL544, VDE750, and CSA C22.2.
ISO9001
For full details go to
www.murata-ps.com/rohs
CERTIFIED
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TDC_PWR1726AC.F04
Page 1 of 3
PWR1726AC
1.5 Watt Unregulated DC/DC Converter
COMMON SPECIFICATIONS
Specifications typical at T
A
= +25°C, V
IN
= 15VDC, I
LOAD
= ±50mA and in free-running mode unless otherwise noted.
PARAMETER
INPUT
Rated Voltage
Voltage Range
Input Current
CONDITIONS
MIN
TYP
12
7
I
LOAD
= 0
I
LOAD
= Rated Load
Short Circuit
I
LOAD
= Rated Load
30
145
115
15
16
165
MAX
UNITS
V
DC
V
DC
mA
mA
mA
mAp-p
Ripple Current
ISOLATION
Voltage Rated Continuous
AC, 60Hz
DC
Test Voltage
Resistance
Capacitance
Leakage Current
OUTPUT
Rated Voltage
Voltage Range
Rated Current
Current Range
Line Regulation
Load Regulation
Ripple Voltage
60sec, 60Hz
3500
5000
8000
10
10
1
±15
±14.25
±16.0
0
0
1.16
0.3
15
50
±16.5
±50
±15.75
±18.0
±90
180
V
ISO
= 240VAC, 60Hz
I
LOAD
= Rated Load
I
LOAD
Rated Load
I
LOAD
= OmA
Balanced Loads
Balanced Loads
Single Ended
7VDC < V
IN
< 18VDC
No Load < I
OUT
< ±50mA
BW = DC to 10MHz
I
LOAD
= 0
I
LOAD
= Rated Load
2
Vrms
V
DC
Vpk
G
pF
µA
V
DC
V
DC
V
DC
mA
mA
mA
mV/mV
%/mA
mVp-p
mVp-p
(referenced to common)
GENERAL
MTTF
Calculated per
MIL - HDBK - 217 Rev. E
Ground, Benign 25° C
Switching Frequency
TEMPERATURE
Specification
Operation
Storage
-25
-40
-55
1.2
120
+25
+85
+100
+110
MHr
kHz
°C
°C
°C
NOTE: Other input and output voltages may be available upon request. Please consult the factory.
MECHANICAL
TOP VIEW
SIDE VIEW
0.405±0.010"
(10.29)
NOTES:
All dimensions are in inches
(millimeters).
GRID: 0.100 inches (2.54 mil-
limeters)
PIN PLACEMENT TOLERANCE:
±0.015"
To ensure proper operation,
the remote on/off pin should be
connected to +Vin when the unit
is on.
MATERIAL: Units are encapsulated
in a low thermal resistance molding
compound which has excellent
chemical resistance, wide operating
temperature range, and good electri-
cal properties under high humidity
environments. The encapsulant
and outer shell of the unit have
UL94V-0 ratings.
Lead material
is brass; lead finish is matte Sn
(100 microinches minimum) over
Ni (40-80 microinches)
1.125±0.015"
(28.58±0.38)
PWR1726AC
0.032±.003"
(.81±.05)
0.075"
(1.904)
1.650±.015"
(41.91±0.38)
1
1.300"
(32.99)
4 1 5 16
0.100"
(2.538)
0.130"
(3.30)
MIN
1
14
15
16
18
30
32
PIN CONNECTIONS
-Vout
-Vin
Sync-In
+Vin
REMOTE ON/OFF
COMMON
+Vout
32
0.075"
(1.904)
30
1.200"
(30.46)
18
0.200"
(5.08)
BOTTOM VIEW
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TDC_PWR1726AC.F04
Page 2 of 3
0.900"
(22.84)
0.1125"
(.32)
PWR1726AC
1.5 Watt Unregulated DC/DC Converter
ABSOLUTE MAXIMUM RATINGS
Input Voltage .........................................................................16V
DC
Output Short-Circuit Duration ....................................................Continuous
Internal Power Dissipation ..................................................................... 2W
Lead Temperature (soldering, 10 seconds max) .............................+300°C
ORDERING INFORMATION
PWR
Device Family
PWR indicates DC/DC converter
Model Number
RoHS Compliant
1726A
C
TYPICAL PERFORMANCE CURVES
TA=+25
0
C, Rated Input Voltage, Rated Output Current unless otherwise noted
OUTPUT VOLTAGE VS. OUTPUT CURRENT
Output Voltage (VDC)
Output Voltage (VDC)
OUTPUT VOLTAGE VS. INPUT VOLTAGE
Output Current (mA)
Input Voltage (VDC)
THROUGH-HOLE SOLDERING INFORMATION
These devices are intended for wave soldering or manual soldering.
They are not intended to be subject to surface mount processes under any
circumstances.
The normal wave soldering process can be used with these devices where the
device is subjected to a maximum wave temperature of 260°C for a period of no
more than 10 seconds. Within this time and temperature range, the integrity of
the device’s plastic body will not be compromised and internal temperatures
within the converter will not exceed 175°C. Care should be taken to control
manual soldering limits identical to that of wave soldering.
SYNCHRONIZATION INFORMATION
The unit may be synchronized to an external clock. Recommended frequency
is a minimum of 110kHz and a maximum of 250kHz. The sync signal must be
a square wave pulse with a peak of 7.5V min to 12V max, the amplitude being
referenced to -Vin.
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
This product is subject to the following
operating requirements
and the
Life and Safety Critical Application Sales Policy:
Refer to:
http://www.murata-ps.com/requirements/
Murata Power Solutions, 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. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
notice.
© 2012 Murata Power Solutions, Inc.
www.murata-ps.com/support
TDC_PWR1726AC.F04
Page 3 of 3
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