Product Series: 3834

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3834

This DC-DC Converter is recommended for space applications requiring good efficiency at low power as well as a small package size.

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

Specifications

  • Input: 12 VDC to VDC
  • Input Range (Continuous): 9 VDC to 20 VDC (START)
  • Input Range (Full Power): 8 VDC to 20 VDC (RUN)
  • Isolation Input to Case: 500 VDC to VDC
  • Isolation Input to Output: 500 VDC to VDC
  • Isolation Output to Case: 500 VDC to VDC
  • Storage Temp: -65 °C to 150 °C
  • Shock: to MIL-STD-810 Method 516.5 Procedure III
  • Acceleration: to MIL-STD 883 Method 2001, test condition A1, Y1 direction, 500G's
  • Vibration: to MIL-STD-883 Method 2026, test condition 2H
  • Weight: 18 gms typical to 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 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

Additional Notes

To operate converter, open inhibit-not pin
To inhibit converter, connect inhibit-not pin to input return
If needed use EMI Filter MDI Model 3747 available separately

Single Output Devices

Toggle Columns: Parameter - Conditions
Parameters Conditions 3834-S3.3 (2W) 3834-S05 (2W) 3834-S12 (2W) 3834-S15 (2W) 3834-S28 (2W)
3834-S3.3 (2W) MIN 3834-S3.3 (2W) TYP 3834-S3.3 (2W) MAX 3834-S05 (2W) MIN 3834-S05 (2W) TYP 3834-S05 (2W) MAX 3834-S12 (2W) MIN 3834-S12 (2W) TYP 3834-S12 (2W) MAX 3834-S15 (2W) MIN 3834-S15 (2W) TYP 3834-S15 (2W) MAX 3834-S28 (2W) MIN 3834-S28 (2W) TYP 3834-S28 (2W) MAX
Output set voltage +3.15 +3.3 +3.45 +4.8 +5 +5.2 +11.8 +12 +12.2 +14.8 +15 +15.2 27.7V 28V 28.3V
Output current Vin min — Vin max 0.06A 0.6A 0.04 0.4A 0.017 0.170A 0.013 0.133 0.007A - 0.071A
Efficiency Pout = max rated load 66% 69% 71% 74% 75% 78% 75% 78% 75% 78%
Line regulation Pout = max rated load
Vin min — Vin max
100mV 200mV 110mV 200mV 200mV 350mV 200mV 400mV 400mV 700mV
Load regulation Pout = 10% to F.L. 100mV 200mV 100mV 200mV 150mV 300mV 200mV 400mV 400mV 700mV
Output ripple F.L. BW 2 MHz
mVpp
30 50 30 50 60 120 70 150mV 180mV 300mV

Dual Output Devices

Toggle Columns: Parameter - Conditions
Parameters Conditions 3834-D05 (2W) 3834-D12 (2W) 3834-D15 (2W)
3834-D05 (2W) MIN 3834-D05 (2W) TYP 3834-D05 (2W) MAX 3834-D12 (2W) MIN 3834-D12 (2W) TYP 3834-D12 (2W) MAX 3834-D15 (2W) MIN 3834-D15 (2W) TYP 3834-D15 (2W) MAX
Output set voltage +lout = -lout+ +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 0.02A 0.2A 0.008A 0.083A 0.007A 0.067A
Efficiency Pout = max rated load 71% 74% 75% 78% 75% 78%
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 ±300mV ±200mV ±400mV
Output ripple F.L. BW 2 MHz
mVpp
30mV 50mV 60mV 120mV 70mV 150mV

Pinout Table

3834-SXX 3834-DXX
Pin-1: +12VDC Input Pin-1: +12VDC Input
Pin-2: +12VDC Input Rtn Pin-2: +12VDC Input Rtn
Pin-3: Output Pos Pin-3: Output Pos
Pin-4: Output Rtn Pin-4: Output Rtn
Pin-5: Case Pin-5: Case
Pin-6: N/C Pin-6: Output Neg
Pin-7: Inhibit-not Pin-7: Inhibit-not

Case Styles

Part Number Designator Case Style Pin Count Mounting Step File
MN Case Style 16 7 Seam Weld Flangeless PCB Mount