BLF278 overview
BLF278 is a component documented by Advanced Semiconductor. The PDF description identifies it as "VHF POWER MOSFET REV. B." This guide condenses the most useful engineering information from the available PDF so that designers and sourcing teams can identify the checks that still need confirmation in the original document.
Datasheet snapshot
- Manufacturer: Advanced Semiconductor
- Part number: BLF278
- Category: IC
- Datasheet length: 7 Pages
Specifications and operating details
The following points were extracted from the PDF text. Check the associated conditions, notes and limits in the complete document before using a value in a design.
- CHARACTERISTICS TC = 25 OC SYMBOL TEST CONDITIONS MINIMUM TYPICAL MAXIMUM UNITS BVDSS ID = 100 mA 125 V IDSS VDS = 50 V V GS = 0 V 5.0 mA IGSS VDS = 0 V V GS = 20 V 1.0 µµµµA VGS(th) ID = 100 mA V DS = 10 V 1.0 5.0 V VDS(on) ID = 10 A V GS.
- MAXIMUM RATINGS ID 40 A VDSS 125 V VGS ±40 V PDISS 500 W @ TC = 25 O C TJ -65 O C to +200 O C TSTG -65 O C to +150 O C θθθθJC 0.35 O C/W A D V A N C E D S E M I C O N D U C T O R, I N C.
- Vds=50Vdc, Idq=400ma, Vgsth=4.10Vdc, wafer=00712-17 SPICE MODEL *HIGH POWER, HIGH FREQUENCY, RF N-CHANNEL VERTICAL DMOS MOSFET *TO GENERATE S PARAMETER MATCHING DATA SHHET, SET VG = 4.3 V FOR IDQ = 455 Ma *MODEL APPLICABLE FOR BLF278 *NOTE.
- In order to cause drain current to flow, positive voltage of about 3 V needs to be applied to the Gate terminal.
- The following circuit describes a means to achieve a –2mv/ °C coefficient at the gate terminal.
- The temperature coefficient of a 6.8V zener is about + 2mv/ °C and the diode is about –2mv/ °C The gate of a transistor draws no current, so there is no current flow in R4.
- R1 is adjusted to cause about 10ma of current flow into the circuit.
Engineering review checklist
- Verify supply range, input common-mode range and output swing at the required load.
- Check offset, bias current, noise, bandwidth, slew rate and stability for the intended feedback network.
- Review supply decoupling, source impedance, capacitive-load behavior and thermal limits in the final layout.
Always confirm values against the latest manufacturer-controlled datasheet, especially when qualifying a substitute or releasing a production BOM.
View the complete PDF and model record
Open the BLF278 datasheet and model details to review the complete PDF, document pages and available product information.
Source attribution
Adapted from the PDF associated with this DigiCamel model page.
Source model URL: https://www.digicamel.com/product.php?slug=blf278-advanced-semiconductor