Worcester, Mass.Allegro MicroSystems has developed a high-brightness, adjustable constant current LED driver for the automotive lighting market, well as industrial and consumer LED applications.
The A6260 is designed to operate over the typical automotive battery and temperature ranges. The input voltage range is specified down to 6 V and will operate up to a maximum of 40 V. The linear constant current output can be adjusted to deliver up to 350 mA in a typical application.
An ENABLE input is used to enable the LED drive and can also be driven with a pulse-width-modulated (PWM) input for dimming of the LED brightness. To help minimize EMI, the slew rate of the output current is controlled during switching. In addition, the ENABLE pin will cause the IC to enter into a low quiescent sleep mode if held low.
The A6260 is fully protected against shorts to ground or shorts to battery. It also includes a thermal shut-down circuit (TSD), which disables the IC if the junction temperature reaches ~ 165°C. Allegro's A6260 has integrated reverse battery protection, eliminating the need for an external reverse battery diode.
The A6260 is available in an 8-lead thermally enhanced SOIC package.
Pricing: $0.85 in quantities of 1,000.
Availability: 12-week lead time.
Datasheet: click here.
Allegro MicroSystems Inc., www.allegromicro.com