Model: 2690-S28

2690-S28

3.75-6.5 Watt Hybrid DC-DC Converter

Completely self contained Thick Film Hybrid DC-DC Converter

No External Filter Caps required

Fully Isolated design

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

BIT

Output Inhibit

Input: 28 VDC

Input Range (Continuous): 16 VDC to 50 VDC

Input Range (Full Power): 18 VDC to 50 VDC

Transient Survival Voltage: 80 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

Grade I:

Full Output Power at T_case = 85°C

Minimum Output Power at T_case = -55°C

Linearly derates to zero at T_case = 115

TID up to kRad(Si)
No SEE up to 60MeV*cm²/mg

Grade M:

Full Output Power at T_case = 85°C

Minimum Output Power at T_case = -55°C

Linearly derates to zero at T_case = 115

TID up to kRad(Si)
No SEE up to 60MeV*cm²/mg

Grade E:

Full Output Power at T_case = 125°C

Minimum Output Power at T_case = -55°C

Linearly derates to zero at T_case = 135

TID up to kRad(Si)
No SEE up to 60MeV*cm²/mg

Parameters	Conditions	2690-S28 (6.5W)
Parameters	Conditions	MIN	TYP	MAX
Output Voltage (FLD)	—	+27.8	+28.0	+28.2
Output current	V_{in min} — V_{in max}	—	—	232mA
Efficiency	P_out = max rated load	78%	82%	-
Line regulation	P_out = max rated load V_{in min} — V_{in max}	-	50mV	250mV
Load regulation	P_out = 10% to F.L.	-	50mV	250mV
Output ripple	F.L. BW 2 MHz mV_pp	-	150	350

Part Number Designator	Case Style	Pin Count	Mounting	Step File
2	Case Style 2	12	Solder Sealed Flangelss PCB Mount	View PDF
F – 10 Pin	Case Style 3	10	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