Datasheet RHK3845MKDICE (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | Radiation Hardened High Voltage Synchronous Step-Down Regulator Kit with Power NMOS FETs |
| Pages / Page | 14 / 2 — Description. absolute MaxiMuM ratings. (Note 1). Dice pinout. PAD FUNCTION |
| File Format / Size | PDF / 225 Kb |
| Document Language | English |
Description. absolute MaxiMuM ratings. (Note 1). Dice pinout. PAD FUNCTION
Model Line for this Datasheet
Text Version of Document
DICE/DWF SPECIFICATION RH3845MKDICE High Voltage Synchronous Step-Down Controller
Description absolute MaxiMuM ratings
The RH3845MK is a high voltage, synchronous, current
(Note 1)
mode controller for medium to high power, high efficiency VIN ..65V supplies. It offers a wide 7.5V to 60V input range. With BOOST ..80V an external VCC supply, minimum input is 4V. An onboard BOOST to SW..24V regulator simplifies the biasing requirements by providing VCC, MODE ..24V IC power directly from VIN. SENSE+, SENSE– ...40V Additional features include an adjustable fixed operating SENSE+ TO SENSE– ..±1V frequency synchronizable to an external clock for noise SYNC, VFB, AND CSS ...5V SHDN Pin Current ..1mA sensitive applications, gate drivers capable of driving large Operating Junction Temperature Range ...–55°C to 125°C N-channel MOSFETs, a precision undervoltage lockout, Storage Temperature Range ...–65°C to 150°C low shutdown current, short-circuit protection, and a programmable soft-start. Note that Burst Mode opera- tion which is available in the LT3845 is not available in the RH3845 version.
Dice pinout
See page 1 for ordering information
20 1 19 PAD FUNCTION 18
1. VIN 11. GND
2
2. SHDN 12. SENSEN
17
3. CSS 13. SENSEP
16
4. MODE 14. PGND
3
5. VFB 15. BG 6. VC 16. V
15
CC
4
7. SYNC 17. SW 8. FSET 18. TG
5
9. GND 19. BOOST
14
10. GND 20. GND
6 7 13 8 10 9 11 12
113mils × 124mils, Backside metal: Alloyed Gold Layer Backside potential: GND 2 Document Outline Description Typical Application Description absolute Maximum Ratings Dice Pinout 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 DESCRIPTION ABSOLUTE MAXIMUM RATINGS TABLE 1 Dice/DWF Electrical Test Limits TABLE 2 Electrical Characteristics TABLE 3 Electrical Characteristics Table 5. Electrical Test Requirements Total Dose Bias Circuit Burn-In Circuit Typical Performance Characteristics preirradiation Typical Performance Characteristics Post-irradiation Revision History
Description absolute MaxiMuM ratings
The RH3845MK is a high voltage, synchronous, current
(Note 1)
mode controller for medium to high power, high efficiency VIN ..65V supplies. It offers a wide 7.5V to 60V input range. With BOOST ..80V an external VCC supply, minimum input is 4V. An onboard BOOST to SW..24V regulator simplifies the biasing requirements by providing VCC, MODE ..24V IC power directly from VIN. SENSE+, SENSE– ...40V Additional features include an adjustable fixed operating SENSE+ TO SENSE– ..±1V frequency synchronizable to an external clock for noise SYNC, VFB, AND CSS ...5V SHDN Pin Current ..1mA sensitive applications, gate drivers capable of driving large Operating Junction Temperature Range ...–55°C to 125°C N-channel MOSFETs, a precision undervoltage lockout, Storage Temperature Range ...–65°C to 150°C low shutdown current, short-circuit protection, and a programmable soft-start. Note that Burst Mode opera- tion which is available in the LT3845 is not available in the RH3845 version.
Dice pinout
See page 1 for ordering information
20 1 19 PAD FUNCTION 18
1. VIN 11. GND
2
2. SHDN 12. SENSEN
17
3. CSS 13. SENSEP
16
4. MODE 14. PGND
3
5. VFB 15. BG 6. VC 16. V
15
CC
4
7. SYNC 17. SW 8. FSET 18. TG
5
9. GND 19. BOOST
14
10. GND 20. GND
6 7 13 8 10 9 11 12
113mils × 124mils, Backside metal: Alloyed Gold Layer Backside potential: GND 2 Document Outline Description Typical Application Description absolute Maximum Ratings Dice Pinout 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 DESCRIPTION ABSOLUTE MAXIMUM RATINGS TABLE 1 Dice/DWF Electrical Test Limits TABLE 2 Electrical Characteristics TABLE 3 Electrical Characteristics Table 5. Electrical Test Requirements Total Dose Bias Circuit Burn-In Circuit Typical Performance Characteristics preirradiation Typical Performance Characteristics Post-irradiation Revision History
