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Model: 3835-S28

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3835-S28

15 Watt 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
Power on soft start
Fully hermetic package
Fully Isolated design with magnetically coupled feedback

Specifications

Input: 12 VDC
Input Range (Continuous): 9 VDC to 20 VDC
Input Range (Full Power): 8 VDC to 20 VDC
Isolation Input to Case: 500 VDC
Isolation Input to Output: 500 VDC
Isolation Output to Case: 500 VDC
Storage Temp: -55 °C to +150 °C
Shock: G's
Acceleration: 500 G's
Vibration: G's
Weight: 35 gms typical

Environment

Grade I:
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 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 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 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
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

Single Output Devices

Toggle Columns: Parameter - Conditions
Parameters Conditions 3835-S28 (15W) MIN 3835-S28 (15W) TYP 3835-S28 (15W) MAX
Output set voltage Full Load +27.7 +28.0 +28.3
Output current Vin min — Vin max 0.054A — 0.54A
Efficiency Pout = max rated load 80% 84% —
Line regulation Pout = max rated load
Vin min — Vin max		 — 50mV 250mV
Load regulation Pout = 10% to F.L. — 400mV 700mV
Output ripple F.L. BW 2 MHz
mVpp		 — 180 300

Pinout Table

3835-Sxx
Pin-1: Inhibit Not
Pin-2: N/C
Pin-3: Output Return
Pin-4: Output +
Pin-5: Synch
Pin-6: Case
Pin-7: Input Return
Pin-8: Input +

Case Styles

Part Number Designator Case Style Pin Count Mounting Step File
AA Case Style 18 8 Seam Weld Flangeless PCB Mount Download
AF Case Style 19 8 Seam Weld Flanged PCB Mount —