Datasheet RH3845MK DICE (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | Radiation Hardened High Voltage Synchronous Step-Down Controller |
| Pages / Page | 8 / 2 — blE 1: DICE/DWF ElECtrICAl tEst lIMIts Specifications are at TA = 25°C, … |
| File Format / Size | PDF / 166 Kb |
| Document Language | English |
blE 1: DICE/DWF ElECtrICAl tEst lIMIts Specifications are at TA = 25°C, VIN = 20V,
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DICE/DWF SPECIFICATION
tA blE 1: DICE/DWF ElECtrICAl tEst lIMIts Specifications are at TA = 25°C, VIN = 20V, VCC = BOOST = 10V, SHDN = 2V, RSET = 49.9kΩ, SENSE– = SENSE+ = 10V, SGND = PGND, SW = 0V. PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Minimum Start Voltage (Note 2) 7.5 V VIN UVLO Threshold (Falling) 3.6 4.0 V VIN Supply Current VCC > 9V 200 μA VIN Shutdown Current VSHDN = 0.3V 100 μA BOOST Supply Current (Note 3) 2 mA VCC Supply Current 4.5 mA SHDN Enable Threshold (Rising) 1.30 1.40 V Reference Voltage 1.214 1.250 V VFB Input Bias Current ±100 nA VFB Error Amp Transconductance 350 µS Error Amp Sink/Source Current 35 µA MODE Pin Current (Note 4) 2 µA Peak Current Limit Sense Voltage 90 120 mV Soft-Start Charge Current 8 14 µA Sense Pins Common-Mode Range 0 36 V Sense Pins Input Current VSENSE(CM) > 4V 400 µA Reverse Protect Sense Voltage VMODE = 7.5V 120 mV Reverse Current Sense Voltage Offset VMODE = VFB 20 mV Switching Frequency RT = 49.9k 270 360 kHz Programmable Frequency Range 100 500 kHz 2 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
tA blE 1: DICE/DWF ElECtrICAl tEst lIMIts Specifications are at TA = 25°C, VIN = 20V, VCC = BOOST = 10V, SHDN = 2V, RSET = 49.9kΩ, SENSE– = SENSE+ = 10V, SGND = PGND, SW = 0V. PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Minimum Start Voltage (Note 2) 7.5 V VIN UVLO Threshold (Falling) 3.6 4.0 V VIN Supply Current VCC > 9V 200 μA VIN Shutdown Current VSHDN = 0.3V 100 μA BOOST Supply Current (Note 3) 2 mA VCC Supply Current 4.5 mA SHDN Enable Threshold (Rising) 1.30 1.40 V Reference Voltage 1.214 1.250 V VFB Input Bias Current ±100 nA VFB Error Amp Transconductance 350 µS Error Amp Sink/Source Current 35 µA MODE Pin Current (Note 4) 2 µA Peak Current Limit Sense Voltage 90 120 mV Soft-Start Charge Current 8 14 µA Sense Pins Common-Mode Range 0 36 V Sense Pins Input Current VSENSE(CM) > 4V 400 µA Reverse Protect Sense Voltage VMODE = 7.5V 120 mV Reverse Current Sense Voltage Offset VMODE = VFB 20 mV Switching Frequency RT = 49.9k 270 360 kHz Programmable Frequency Range 100 500 kHz 2 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
