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Model: 4690-S28

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4690-S28

Proton Rad Hard 100K+® DC – DC Converters

Features

RadHard TID >100kRad(Si)
2:1 Margin: Operates beyond 200kRad TID
No SEE: LET > 82meV*cm^2/mg
Proton Resistant: No optocouplers used
Fully Isolated design
Inhibit-not function
Power on soft start
200kHz operation for low ripple and fast response time
Built in EMI input filter meets MIL-STD 461C requirements CE01,CE03, CS01, CS02 & CS06
Short Circuit protection
Over voltage protection
External Sync
Efficiency optimized for lower power applications

Specifications

Input: 28
Input Range (Continuous): 16
Isolation Input to Case: 500
Isolation Input to Output: 500
Isolation Output to Case: 100
Storage Temp: -55 °C to +150 °C
Shock: 50 G's
Acceleration: 500 G's
Vibration: 30 G's
Weight: 50 gms typical

Environment

Grade EU:
Full Output Power at Tcase = 85°C
Minimum Output Power at Tcase = -55°C
Linearly derates to zero at Tcase = 115
TID up to kRad(Si)
No SEE up to 60MeV*cm2/mg
Grade L:
Full Output Power at Tcase = 85°C
Minimum Output Power at Tcase = -55°C
Linearly derates to zero at Tcase = 115
TID up to 45kRad(Si)
No SEE up to 60MeV*cm2/mg
Grade LE:
Full Output Power at Tcase = 125°C
Minimum Output Power at Tcase = -55°C
Linearly derates to zero at Tcase = 135
TID up to 45kRad(Si)
No SEE up to 60MeV*cm2/mg
Grade S:
Full Output Power at Tcase = 85°C
Minimum Output Power at Tcase = -55°C
Linearly derates to zero at Tcase = 115
TID up to 100kRad(Si)
No SEE up to 60MeV*cm2/mg
Grade SE:
Full Output Power at Tcase = 125°C
Minimum Output Power at Tcase = -55°C
Linearly derates to zero at Tcase = 135
TID up to 100kRad(Si)
No SEE up to 60MeV*cm2/mg

Additional Notes

Typical no load quiescent current <15mA at 28VDC.

Typical INH (off) quiescent current <275uA.

Single Output Devices

Toggle Columns: Parameter - Conditions
Parameters Conditions 4690-S28 (2.5W) MIN 4690-S28 (2.5W) TYP 4690-S28 (2.5W) MAX
Output set voltage — +27.8 +28.0 +28.2
Output current Vin min — Vin max 9.0mA — 90.0mA
Efficiency Pout = max rated load 81% 86% —
Line regulation Pout = max rated load
Vin min — Vin max		 — 50mV 250mV
Load regulation Pout = 10% to F.L. — 600mV 1.20V
Output ripple F.L. BW 2 MHz
mVpp		 — 150 350

Pinout Table

4690-Sxx >24V
Pin-1: BIT
Pin-2: Inhibit Not
Pin-3: Soft Start
Pin-4: Sync
Pin-5: Case
Pin-6: Input Return
Pin-7: + Input
Pin-8: N/C
Pin-9: N/C
Pin-10: Main Output
Pin-11: N/C
Pin-12: Main Output Return

Case Styles

Part Number Designator Case Style Pin Count Mounting Step File
2 Case Style 2 12 Solder Sealed Flangelss PCB Mount Download
F – 12 Pin Case Style 3 12 Solder Sealed Flanged PCB Mount Download
G Case Style 5 12 Seam Weld Flangeless PCB Mount Download
GF Case Style 6 12 Seam Weld Flanged PCB Mount Download
UF Case Style 8 12 Seam Weld Flanged Chassis Mount Download