Model: 3327-S28

3327-S28

19.5-40 Watt Hybrid DC-DC Converter

Features

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

BIT

External Sync

Specifications

Input: 270 VDC

Input Range (Continuous): 185 VDC to 335 VDC

Transient Survival Voltage: 440 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: 75 gms typical

Environment

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

Single Output Devices

Toggle Columns: Parameter - Conditions

Parameters	Conditions	3327-S28 (40W) MIN	3327-S28 (40W) TYP	3327-S28 (40W) MAX
Output Voltage (FLD)	—	+27.8	+28.0	+28.2
Output current	P_out = max rated load	-	-	1.43A
Efficiency	P_out = max rated load	77%	81%	-
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

Pinout Table

3327-SXX≥24
Pin-1: bit
Pin-2: inhibit not
Pin-3: soft start
Pin-4: sync
Pin-5: N/C
Pin-6: input ret
Pin-7: + input
Pin-8: N/C
Pin-9: N/C
Pin-10: main output
Pin-11: N/C
Pin-12: main output ret

Case Styles

Part Number Designator	Case Style	Pin Count	Mounting	Step File
2	Case Style 2	12	Solder Sealed Flangelss PCB Mount	Download
F – 10 Pin	Case Style 3	10	Solder Sealed Flanged PCB Mount	Download
J	Case Style 5	12	Seam Weld Flangeless PCB Mount	Download
JF	Case Style 6	12	Seam Weld Flanged PCB Mount	Download
XF	Case Style 8	12	Seam Weld Flanged Chassis Mount	Download
PC	Case Style 10	12	Solder Sealed PCB Stud Mount	Download