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MHD2805S Datasheet(PDF) 2 Page - Crane Aerospace & Electronics. |
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MHD2805S Datasheet(HTML) 2 Page - Crane Aerospace & Electronics. |
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2 / 11 page  TYPICAL CHARACTERISTICS SYNC AND INHIBIT RECOMMENDED OPERATING CONDITIONS ABSOLUTE MAXIMUM RATINGS Input Voltage • 16 to 40 V Output Power • 15 to 20 watts depending on model Lead Soldering Temperature (10 sec per lead) • 300°C Storage Temperature Range (Case) • –65°C to +150°C B2-48 MHD SERIES 20 WATT DC/DC CONVERTERS Output Voltage Temperature Coefficient • 100 ppm/°C typical Input to Output Capacitance • 50 pF typical Current Limit • 115% of full load typical Isolation • 100 megohm minimum at 500 V Audio Rejection • 50 dB typical Conversion Frequency • Free run mode 625 kHz typical 550 kHz. min, 650 kHz max • External sync range 500 to 675 kHz Inhibit Pin Voltage (unit enabled) • 9 to 11 V Input Voltage Range • 16 to 40 VDC continuous • 50 V for up to 50 msec transient Case Operating Temperature (Tc) • –55°C to +125°C Full power • –55°C to +135°C Absolute Derating Output Power/Current • Linearly from 100% at 125°C to 0% at 135° C Sync (500 to 675 kHz) • Duty cycle 40% min, 60% max • Logic low 0.8 V max, 0.0 V min • Logic high 4.0 V min, 10 V max • Referenced to input common • If not used, connect to input common Inhibit: TTL Open Collector • Logic low (output disabled) Logic low voltage ≤0.8 V Inhibit pin current 8.0 mA max • Referenced to input common • Logic high (output enabled) Open collector SINGLE OUTPUT MODELS MHD2805S MHD2812S MHD2815S MHD2818S PARAMETER CONDITION MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS OUTPUT VOLTAGE 4.95 5.00 5.05 11.88 12.00 12.12 14.85 15.00 15.15 17.82 18.00 18.18 VDC OUTPUT CURRENT1 VIN = 16 to 40 VDC 0 — 3 0 — 1.67 0 — 1.33 0 — 1.11 A OUTPUT POWER1 VIN = 16 to 40 VDC 0 — 15 0 — 20 0 — 20 0 — 20 W OUTPUT RIPPLE 10 kHz – 2 MHz — 35 50 — 25 40 — 25 40 — — 40 mV p VOLTAGE Tc = –55°C TO +125°C — 50 90 — 40 90 — 40 90 — — 90 LINE REGULATION2 Vin = 16 to 40 VDC — 10 50 — 10 50 — 10 50 — — 50 mV Tc = –55°C TO +125°C — 15 50 — 15 50 — 15 50 — — 50 LOAD REGULATION NO LOAD TO FULL — 5 50 — 5 50 — 5 50 — — 50 mV Tc = –55°C TO +125°C — 15 50 — 15 50 — 15 50 — — 50 INPUT VOLTAGE1 CONTINUOUS 16 28 40 16 28 40 16 28 40 16 28 40 VDC NO LOAD TO FULL TRANSIENT 50 ms — — 50 — — 50 — — 50 — — 50 V INPUT CURRENT NO LOAD1 — 35 75 — 35 75 — 35 75 — — 75 mA FULL LOAD — 0.70 — — 0.87 — — 0.85 — — — — A INHIBITED1 —7 8 — 7 8 — 7 8 — — 8 mA INPUT RIPPLE 10 kHz – 10 MHz CURRENT Tc = –55°C TO +125°C — 20 50 — 20 50 — 20 50 — — 50 mA p-p EFFICIENCY 76 78 — 80 83 — 81 84 — 81 — — % LOAD FAULT3 SHORT CIRCUIT SHORT CIRCUIT TO POWER DISSIPATION — — 10 — — 10 — — 10 — — 10 A FULL LOAD RECOVERY1, 3 — 1.4 5 — 1.4 5 — 1.4 5 — — 5 ms STEP LOAD RESP. 50% – 100% – 50% — ±200 ±300 — ±250 ±400 — ±350 ±500 — — ±600 TRANSIENT 10% – 100% — –400 –600 — –600 –1000 — –800 –1200 — — — mV pk 100% – 10% — +350 +600 — +500 +750 — +600 +1000 — — — 50% – 100% – 50% — 60 200 — 60 200 — 60 200 — — 200 RECOVERY4 10% – 100% — 60 600 — 150 300 — 250 500 — — — µs 100% – 10% — 200 600 — 250 500 — 250 500 — — — STEP LINE RESP. 16 – 40 – 16 VDC TRANSIENT5 — ±200 ±300 — ±400 ±500 — ±500 ±600 — — ±600 mV pk RECOVERY4 — — 300 — — 300 — — 300 — — 300 µs START-UP1 DELAY — 1.4 5 — 1.4 5 — 1.4 5 — — 5 ms OVERSHOOT FULL LOAD — 0 50 — 0 120 — 0 150 — — 180 mV pk NO LOAD — 50 250 — 120 600 — 150 750 — — — Electrical Characteristics:25C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. Notes 1. Tc = –55°C to +125°C 2. Operation is limited below 16V (see Figure 15). 3. Indefinite short circuit protection not guaranteed above 125°C case. 4. Recovery time is measured from application of the transient to point at which Vout is within 1% of final value. 5. Transition time ≥ 10 µs. |
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