VG2043 FMSH 9–15V Flasher Control IC DIP8

The FMSH VG2043 is an analog ic. 1.0 Mar. 2001 2 Initial Release. 2.0 Oct. 2007 7 Updated format. 2.1 May. 2008 7 Sales and service Updated the address of HK office.

Key Specifications

Features

• ‹ Temperature and voltage compensated frequency
• ‹ Warning indication of lamp failure by means of frequency doubling
• ‹ Minimum lamp load for flasher operation ≥ 10W
• ‹ Relay output with high current carrying capacity and low saturation voltage
• ‹ DIP8 or Sop8 package
• ‹ Two type supply voltage for selection: 12V and 24V (2043B is for 12V, 2043C is for 24V)

Design Notes

• The trip threshold is specified over a tolerance band, not at a single point. Design the sense resistor against the worst-case ends of that band, or nuisance tripping will appear at temperature extremes.
• These circuits are usually supplied from a capacitive dropper or a resistive divider off the mains. Verify the supply current budget against the datasheet before adding load.
• Package choice drives creepage. For mains-referenced parts, use the widest package the layout allows and keep the specified clearance to the low-voltage side.
• Check the temperature coefficient of the threshold if the product must hold accuracy over an outdoor temperature range.

Common Questions

What is the trip threshold?

the threshold above. The threshold is specified over a tolerance band, so size the sense element against the band ends rather than the typical value.

What does this device do?

Automotive flashers controller. It integrates the control loop that would otherwise need a board of discrete parts.

Which packages are offered?

DIP8, SOP8. For mains-referenced circuits choose the package that meets the creepage requirement of the layout.

How is it powered?

Typically from a capacitive dropper or resistive divider off the mains rail. Check the supply current budget in the datasheet before adding any load to that rail.