+1.631.345.3100
Made in the USA

Model: 4690A-3.3/5

4690A-3.3/5

2.5W Proton Rad Hard 100K+® DC – DC Converters

Features

RadHard TID >100kRad(Si)
No SEE: LET > 82meV*cm^2/mg
Proton Resistant: No optocouplers used
Completely self contained Thick Film Hybrid DC-DC Converter
No External Filter Caps required
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
Fully hermetic package
Efficiency optimized for lower power applications

Specifications

Input: 28 VDC
Input Range (Continuous): 16 VDC to 40 VDC
Isolation Input to Case: 500 VDC
Isolation Input to Output: 500 VDC
Isolation Output to Case: 100 VDC
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 28 VDC

Typical INH (off) quiescent current <800uA

Triple Output Devices

Parameters Conditions 4690A-3.3/5 (2.5W)
MIN TYP MAX
Output set voltage — +3.2
+4.9
-4.9		 +3.3
+5.0
-5.0		 +3.4
+5.1
-5.1
Output current Vin min — Vin max 40mA
± 25mA		 — 380mA
± 250mA
Efficiency Pout = max rated load 60% 63% —
Line regulation Pout = max rated load
Vin min — Vin max		 — 25mV 50mV
Load regulation Pout = 10% to F.L. — 50mV 100mV
Output ripple F.L. BW 2 MHz
mVpp		 — — 50

Pinout Table

4690A-Txx
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: Main Output
Pin-9: Main Output Return
Pin-10: + Dual Output
Pin-11: Dual Output Return
Pin-12: - Dual Output

Case Styles

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