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MSR28512S Datasheet(PDF) 2 Page - Crane Aerospace & Electronics. |
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MSR28512S Datasheet(HTML) 2 Page - Crane Aerospace & Electronics. |
2 / 6 page INHIBIT TYPICAL CHARACTERISTICS RECOMMENDED OPERATING CONDITIONS SINGLE AND DUAL OUTPUT MODELS MSR2805S MSR2812D MSR2815D PARAMETER1 CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS OUTPUT VOLTAGE 4.90 5.0 5.10 ±11.88 ±12 ±12.12 ±14.85 ±15 ±15.15 VDC OUTPUT CURRENT 16 TO 32 VIN — — 700 — — ±167 — — ±133 mA OUTPUT POWER Tc = –55°C TO +85°C — — 3.5 — — 4.0 — — 4.0 W OUTPUT RIPPLE BW = DC TO 1 MHz — 75 150 — 75 150 — 75 150 mV p-p LINE REGULATION 16 TO 32 VIN — 5 10 — 10 20 — 10 20 mV LOAD REGULATION NO LOAD TO FULL — 25 50 — 12 24 — 12 24 mV INPUT VOLTAGE Tc = –55°C TO +85°C 16 28 32 16 28 32 16 28 32 VDC TRANSIENT 50 ms — — 40 — — 40 — — 40 V INPUT CURRENT NO LOAD — 7 10 — 10 15 — 10 15 FULL LOAD — — 192 — — 213 — — 213 mA INHIBITED — — 2 — — 15 — — 15 EFFICIENCY 65 70 — 67 70 — 67 70 — % B4-28 MSR SERIES 4 WATT DC/DC CONVERTERS ABSOLUTE MAXIMUM RATINGS Input Voltage Range • 16 to 32 VDC continuous • 40 V for 50 msec transient Case Operating Temperature (Tc) • –55°C to +85°C full power • –55°C to +115°C absolute Derating Output Power/Current • Linearly from 100% at 85°C to 0% at 115°C Inhibit TTL Open Collector • Logic low (output disabled) ≤ 0.8 V • Referenced to input common • Logic high (output enabled) ≥ 12 V Open collector Required Minimum Model Connection Capacitor Value1 Single Output Positive Output (12 & 13) to MSR2805S Output Common (8 & 9) 220 µF, 10 V Positive Output (10) to Dual Outputs2 Output Common (8) 100 µF, 25 V MSR2812D External Capacitor (14) to 100 µF, 25 V and Output Common (8)3 MSR2815D Negative Output (12) to 10 µF, 25 V Output Common (8) FEEDBACK LOGIC TIMING CONTROL SWITCH 10 POSITIVE OUTPUT 8 12 1, 2 POSITIVE INPUT 15 INHIBIT 17, 18 INPUT COMMON 14 NEGATIVE OUTPUT OUTPUT COMMON EXTERNAL CAPACITOR TERMINAL 100 µF 10 µF 100 µF + + + EXTERNAL CAPACITORS VOLTAGE REGULATOR FIGURE 1: DUAL OUTPUT EXTERNAL CAPACITOR CONNECTIONS Notes – Table 1 1. Capacitors should be high quality, low ESR components — solid tantalum is recommended. 2. See Figure 1 for connection diagram 3. Place positive side of capacitor toward pin 8. TABLE 1: EXTERNAL CAPACITOR REQUIREMENTS Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified. Input Voltage • 16 to 32 VDC Output Power • 3.2 to 4 watts depending on model Lead Soldering Temperature (10 sec per lead) • 300°C Storage Temperature Range (Case) • –-65°C to +150°C Output Voltage Temperature Coefficient • MSR2805S 100 ppm/°C typ, 200 max. • MSR28XXD 50 ppm/°C typ • MSR285XXT 100 ppm/°C typ Input to Output Capacitance • 60 pF typical Isolation • 100 megohm minimum at 500 V Conversion Frequency • Single and dual output models, 80 kHz at full load typical, variable frequency • Triple output models, 200 kHz typical fixed frequency Inhibit Pin Voltage (unit enabled) • 12 to 28 V WARNING:EXTERNAL CAPACITORS REQUIRED Notes 1. External capacitors required to prevent damage to internal circuitry (see Table 1 for specifications). 2. Dual output models deliver up to 4 watts total for balanced or unbalanced loads, however, the positive output should carry at least 25% of the total load. SINGLE AND DUAL OUTPUT EXTERNAL CAPACITORS OPERATION WITHOUT EXTERNAL CAPACITORS WILL RESULT IN DAMAGE TO THE INTERNAL CIRCUITRY. |
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