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Product Series: 3835

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3835

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-S05 (15W) 3835-S3.3 (15W) 3835-S12 (15W) 3835-S15 (15W) 3835-S28 (15W)
3835-S05 (15W) MIN 3835-S05 (15W) TYP 3835-S05 (15W) MAX 3835-S3.3 (15W) MIN 3835-S3.3 (15W) TYP 3835-S3.3 (15W) MAX 3835-S12 (15W) MIN 3835-S12 (15W) TYP 3835-S12 (15W) MAX 3835-S15 (15W) MIN 3835-S15 (15W) TYP 3835-S15 (15W) MAX 3835-S28 (15W) MIN 3835-S28 (15W) TYP 3835-S28 (15W) MAX
Output set voltage Full Load +4.8 +5.0 +5.2 +3.1 +3.3 +3.4 +11.8 +12.0 +12.2 +14.8 +15.0 +15.2 +27.7 +28.0 +28.3
Output current Vin min — Vin max 0.30A — 3.0A 0.45A — 4.5A 0.125A — 1.25A 0.1A — 1.0A 0.054A — 0.54A
Efficiency Pout = max rated load 72% 75% — 67% 70% — 80% 83% — 80% 84% — 80% 84% —
Line regulation Pout = max rated load
Vin min — Vin max		 — 110mV 200mV — 100mV 200mV — 20mV 100mV — 25mV 125mV — 50mV 250mV
Load regulation Pout = 10% to F.L. — 100mV 200mV — 100mV 200mV — 150mV 500mV — 200mV 600mV — 400mV 700mV
Output ripple F.L. BW 2 MHz
mVpp		 — 40 125 — 30 100 — 60 150 — 70 180 — 180 300

Dual Output Devices

Toggle Columns: Parameter - Conditions
Parameters Conditions 3835-D05 (15W) 3835-D12 (15W) 3835-D15 (15W)
3835-D05 (15W) MIN 3835-D05 (15W) TYP 3835-D05 (15W) MAX 3835-D12 (15W) MIN 3835-D12 (15W) TYP 3835-D12 (15W) MAX 3835-D15 (15W) MIN 3835-D15 (15W) TYP 3835-D15 (15W) MAX
Output set voltage Full Load +4.8
-4.8		 +5.0
-5.0		 +5.2
-5.2		 +11.8
-11.8		 +12.0
-12.0		 +12.2
-12.2		 +14.8
-14.8		 +15.0
-15.0		 +15.2
-15.2
Output current Vin min — Vin max ±0.15A — ±1.5A ±0.063A — ±0.63A ±0.05A — ±0.50A
Efficiency Pout = max rated load 72% 75% — 80% 83% — 80% 84% —
Line regulation Pout = max rated load
Vin min — Vin max		 — ±110mV ±200mV — ±200mV ±350mV — ±200mV ±400mV
Load regulation Pout = 10% to F.L. — ±100mV ±200mV — ±150mV ±500mV — ±200mV ±600mV
Output ripple F.L. BW 2 MHz
mVpp		 — 40 125 — 60 150 — 70 180

Pinout Table

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