PWR1726AC www.murata-ps.com 1.5 Watt Unregulated DC/DC Converter DESCRIPTION FEATURES ■ 8000v Isolation Test Voltage ■ No External Parts Required ■ Remote On/Off ■ Low-Barrier Capacitance ■ RoHS Compliant ■ Synchronizable 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. APPLICATIONS ■ Biomedical Data Acquisition ■ Industrial Process Equipment ■ Data Acquisition ■ Test Equipment ■ Portable Equipment ISO9001 For full details go to www.murata-ps.com/rohs CERTIFIED www.murata-ps.com/support TDC_PWR1726AC.F04 Page 1 of 3 PWR1726AC 1.5 Watt Unregulated DC/DC Converter COMMON SPECIFICATIONS Specifications typical at TA = +25°C, VIN = 15VDC, ILOAD = ±50mA and in free-running mode unless otherwise noted. PARAMETER CONDITIONS INPUT Rated Voltage Voltage Range Input Current MIN TYP MAX 12 7 16 ILOAD = 0 ILOAD = Rated Load Short Circuit ILOAD = Rated Load Ripple Current ISOLATION Voltage Rated Continuous AC, 60Hz DC Test Voltage Resistance Capacitance Leakage Current OUTPUT Rated Voltage Voltage Range 30 145 115 15 3500 5000 8000 60sec, 60Hz 10 10 1 VISO = 240VAC, 60Hz ILOAD = Rated Load ILOAD Rated Load ILOAD = OmA Balanced Loads Balanced Loads Single Ended 7VDC < VIN < 18VDC No Load < IOUT < ±50mA BW = DC to 10MHz ILOAD = 0 ILOAD = Rated Load Rated Current Current Range Line Regulation Load Regulation Ripple Voltage GENERAL MTTF 165 2 ±15 ±14.25 ±16.0 ±15.75 ±18.0 ±16.5 ±50 0 0 ±90 180 1.16 0.3 Calculated per MIL - HDBK - 217 Rev. E Ground, Benign 25° C Switching Frequency TEMPERATURE Specification Operation Storage -25 -40 -55 UNITS VDC VDC mA mA mA mAp-p Vrms VDC Vpk G pF µA VDC VDC VDC mA mA mA mV/mV %/mA 15 50 mVp-p mVp-p (referenced to common) 1.2 120 MHr kHz +25 +85 +100 +110 °C °C °C NOTE: Other input and output voltages may be available upon request. Please consult the factory. MECHANICAL TOP VIEW SIDE VIEW NOTES: 0.405±0.010" (28.58±0.38) PWR1726AC 0.032±.003" 0.130" (.81±.05) 0.075" (1.904) 1.300" (32.99) 1 1.650±.015" 4 1 5 16 PIN CONNECTIONS -Vout -Vin Sync-In +Vin REMOTE ON/OFF COMMON +Vout 0.900" (22.84) (41.91±0.38) 1 14 15 16 18 30 32 (3.30) 0.100" (2.538) 0.1125" (.32) 1.125±0.015" (10.29) 32 0.075" (1.904) 30 0.200" (5.08) 18 1.200" (30.46) BOTTOM VIEW MIN All dimensions are in inches (millimeters). GRID: 0.100 inches (2.54 millimeters) 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 electrical 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) www.murata-ps.com/support TDC_PWR1726AC.F04 Page 2 of 3 PWR1726AC 1.5 Watt Unregulated DC/DC Converter ABSOLUTE MAXIMUM RATINGS ORDERING INFORMATION Input Voltage .........................................................................16VDC Output Short-Circuit Duration ....................................................Continuous Internal Power Dissipation ..................................................................... 2W Lead Temperature (soldering, 10 seconds max) .............................+300°C PWR 1726A C Device Family PWR indicates DC/DC converter Model Number RoHS Compliant TYPICAL PERFORMANCE CURVES TA=+250C, 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) 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. Input Voltage (VDC) 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. 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. 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