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SMRT285DKR Datasheet(PDF) 3 Page - Crane Aerospace & Electronics. |
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SMRT285DKR Datasheet(HTML) 3 Page - Crane Aerospace & Electronics. |
3 / 17 page OPERATING CONDITIONS AND CHARACTERISTICS Input Voltage Range • 19 to 56 VDC continuous Output Power • up to 35 watts depending on model Lead Soldering Temperature (10 sec per pin) • 300°C Storage Temperature Range (Case) • -65°C to +150°C Case Operating Temperature (Tc) • -55°C to +125°C full power • -55°C to +135°C absolute Power Dissipation (Pd) • 20 to 28 W Output Voltage Temperature Coefficient • 100 ppm/°C max Current Limit • 125% of full load typical Isolation • 100 megohm minimum at 500 V Audio Rejection • 50 dB typical Conversion Frequency • 300 kHz typical, 270 kHz min., 330 kHz max. Radiation (will operate through) • 1x1012 neutrons/cm2 neutron or proton fluence • Radiation dose rate 1011 rads (Si) /sec • Total dose up to 300 K rads (Si) • SEU 60 MeV-cm2/mg Cross Regulation • 2.5% typical • Applies to -VOAUX on triple models only • Variation of -VOAUX from +PO=80%, -PO=20% to +PO=20%, -PO=80% • Referenced to 50%/50% balanced ±VOAUX loads MECHANICAL AND ENVIRONMENTAL Size (maximum) 2.705 x 2.205 x 0.400 inches (68.71 x 56.01 x 10.16 mm) See case S for dimensions. Weight (maximum) 100 grams maximum Screening Space Prototype, Class H, or Class K Radiation tolerant to Radiation Hardness Assurance (RHA) levels of “-” (O), “P”, “R”, or “F” per MIL-PRF-38534. Interpoint model numbers use an “O” in the RHA designator position to indicate the “-” (dash) Radiation Hardness Assurance level of MIL-PRF- 38534, which is defined as “no RHA”. See “Class H and K, MIL-PRF-38534 Screening” tables for more information. Available configurations: OO, HP, HR, KP, KR, KF SYNC AND INHIBIT Sync In 270-330 kHz typical • Duty cycle 20% min, 80% max • 2.5V p-p minimum amplitude • 10V p-p maximum amplitude • Can be referenced to input or output return • If sync is used at lower end of the range, full load operation is not guaranteed. Inhibit • Actve low (output disabled) INH referenced to input common Active low 0.4 V max Inhibit pin current < 2mA • Open collector (output enabled) High >3.0V Not to exceed 10V Open Collector Inhibit Pin Voltage • 5 to 6 V Crane Aerospace & Electronics Power Solutions www.craneae.com Page 3 of 17 Rev B – 20080213 SMRT Single, Dual and Triple DC/DC Converters 28 VOLT INPUT – 35 WATT |
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