Datasheet RH3845MK DICE (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | Radiation Hardened High Voltage Synchronous Step-Down Controller |
| Pages / Page | 8 / 3 — tAblE 2: ElECtrICAl ChArACtErIstICs (Pre-Irradiation) Specifications are … |
| File Format / Size | PDF / 166 Kb |
| Document Language | English |
tAblE 2: ElECtrICAl ChArACtErIstICs (Pre-Irradiation) Specifications are at TA = 25°C, VIN = 20V,
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DICE/DWF SPECIFICATION
tAblE 2: ElECtrICAl ChArACtErIstICs (Pre-Irradiation) Specifications are at TA = 25°C, VIN = 20V, VCC = BOOST = 10V, SHDN = 2V, RSET = 49.9kΩ, SENSE– = SENSE+ = 10V, SGND = PGND, SW = 0V. SUB- TA = 25°C SUB- –55°C ≤ TA ≥ 125°C PARAMETER CONDITIONS GROUP MIN TYP MAX GROUP MIN TYP MAX UNITS
VIN Minimum Start Voltage (Note 2) 1 7.5 2, 3 7.5 V VIN UVLO Threshold (Falling) 1 3.6 3.8 4.0 2, 3 3.6 3.8 4.0 V VIN Supply Current VCC > 9V 1 130 200 2, 3 800 μA VIN Shutdown Current VSHDN = 0.3V 1 65 100 2, 3 200 μA BOOST Supply Current (Note 3) 1 1.4 2 2, 3 3.5 mA VCC Supply Current 1 3.8 4.5 2, 3 5.5 mA VCC Current Limit 1 –40 –150 2, 3 –40 mA SHDN Enable Threshold (Rising) 1 1.30 1.35 1.4 2, 3 1.30 1.5 V SHDN Hysteresis 1 140 2, 3 100 200 mV Reference Voltage 1 1.214 1.232 1.250 2, 3 1.214 1.250 V VFB Input Bias Current 1 ±20 ±100 2, 3 ±20 nA VFB Error Amp Transconductance 1 350 450 2, 3 340 540 µS Error Amp Sink/Source Current 1 35 50 2, 3 20 µA Peak Current Limit Sense Voltage 1 90 105 120 2, 3 85 125 mV Soft-Start Charge Current 1 8 12 14 2, 3 8 16 µA Sense Pins Common-Mode Range 1 0 36 2, 3 0 36 V Sense Pins Input Current VSENSE(CM) > 4V 1 320 400 2, 3 500 µA Reverse Protect Sense Voltage VMODE = 7.5V 1 108 120 2, 3 140 mV Reverse Current Sense Voltage Offset VMODE = VFB 1 15 20 2, 3 25 mV Switching Frequency RT = 49.9k 1 270 300 360 2, 3 240 390 kHz Programmable Frequency Range 1 100 500 2, 3 100 500 kHz External Sync Frequency Range 1 100 600 2, 3 100 600 kHz Non-Overlap Time TG to BG 1 250 2, 3 ns Non-Overlap Time BG to TG 1 250 2, 3 ns TG Minimum On-Time 1 400 2, 3 ns TG Minimum Off-Time 1 300 2, 3 ns TG, BG Drive On Voltage VCC = 10V 1 8 8.75 2, 3 8 V TG, BG Drive Off Voltage 1 0.1 2, 3 0.1 V TG, BG Drive Rise Time CTG = CBG = 3300pF 1 45 2, 3 ns TG, BG Drive Fall Time CTG = CBG = 3300pF 1 45 2, 3 ns 3 Document Outline Description DICE Pinout Absolute Maximum Ratings Table 1: DICE/DWF Electrical Test Limits Table 2: Electrical Characteristics Table 3: Electrical Characteristics Table 4: Electrical Test Requirements Total Dose Bias Circuit — Run Mode Total Dose Bias Circuit — Shutdown Mode Burn-In Circuit — Run Mode Typical Performance Characteristics
tAblE 2: ElECtrICAl ChArACtErIstICs (Pre-Irradiation) Specifications are at TA = 25°C, VIN = 20V, VCC = BOOST = 10V, SHDN = 2V, RSET = 49.9kΩ, SENSE– = SENSE+ = 10V, SGND = PGND, SW = 0V. SUB- TA = 25°C SUB- –55°C ≤ TA ≥ 125°C PARAMETER CONDITIONS GROUP MIN TYP MAX GROUP MIN TYP MAX UNITS
VIN Minimum Start Voltage (Note 2) 1 7.5 2, 3 7.5 V VIN UVLO Threshold (Falling) 1 3.6 3.8 4.0 2, 3 3.6 3.8 4.0 V VIN Supply Current VCC > 9V 1 130 200 2, 3 800 μA VIN Shutdown Current VSHDN = 0.3V 1 65 100 2, 3 200 μA BOOST Supply Current (Note 3) 1 1.4 2 2, 3 3.5 mA VCC Supply Current 1 3.8 4.5 2, 3 5.5 mA VCC Current Limit 1 –40 –150 2, 3 –40 mA SHDN Enable Threshold (Rising) 1 1.30 1.35 1.4 2, 3 1.30 1.5 V SHDN Hysteresis 1 140 2, 3 100 200 mV Reference Voltage 1 1.214 1.232 1.250 2, 3 1.214 1.250 V VFB Input Bias Current 1 ±20 ±100 2, 3 ±20 nA VFB Error Amp Transconductance 1 350 450 2, 3 340 540 µS Error Amp Sink/Source Current 1 35 50 2, 3 20 µA Peak Current Limit Sense Voltage 1 90 105 120 2, 3 85 125 mV Soft-Start Charge Current 1 8 12 14 2, 3 8 16 µA Sense Pins Common-Mode Range 1 0 36 2, 3 0 36 V Sense Pins Input Current VSENSE(CM) > 4V 1 320 400 2, 3 500 µA Reverse Protect Sense Voltage VMODE = 7.5V 1 108 120 2, 3 140 mV Reverse Current Sense Voltage Offset VMODE = VFB 1 15 20 2, 3 25 mV Switching Frequency RT = 49.9k 1 270 300 360 2, 3 240 390 kHz Programmable Frequency Range 1 100 500 2, 3 100 500 kHz External Sync Frequency Range 1 100 600 2, 3 100 600 kHz Non-Overlap Time TG to BG 1 250 2, 3 ns Non-Overlap Time BG to TG 1 250 2, 3 ns TG Minimum On-Time 1 400 2, 3 ns TG Minimum Off-Time 1 300 2, 3 ns TG, BG Drive On Voltage VCC = 10V 1 8 8.75 2, 3 8 V TG, BG Drive Off Voltage 1 0.1 2, 3 0.1 V TG, BG Drive Rise Time CTG = CBG = 3300pF 1 45 2, 3 ns TG, BG Drive Fall Time CTG = CBG = 3300pF 1 45 2, 3 ns 3 Document Outline Description DICE Pinout Absolute Maximum Ratings Table 1: DICE/DWF Electrical Test Limits Table 2: Electrical Characteristics Table 3: Electrical Characteristics Table 4: Electrical Test Requirements Total Dose Bias Circuit — Run Mode Total Dose Bias Circuit — Shutdown Mode Burn-In Circuit — Run Mode Typical Performance Characteristics
