A1569E - Allegro

A1569E LED Driver

The A1569E is a highly integrated solution that combines a Hall-effect switch with a linear, programmable current regulator, providing up to 150 mA to drive one or more LEDs. With the addition of only two passive components and one or more LEDs, the A1569E forms a complete, magnetically actuated lighting solution that is small, flexible, elegant, easy to des.

Features

• Linear LED drive current ≤150 mA set by an external reference resistor
• High sensitivity, omnipolar Hall-effect switch for LED on/off control
• Low component count for small size and ease of design
• Elegant fade-in/fade-out effects with adjustable duration (optional)
• Low dropout voltage and low supply current
• Chopper-stabilized Hall switch □□Low switchpoint drift over temperature □□Insensitivity to physical stress
• Input pin for external LED driver control
• Slew-rate-limited LED output drive for current transient suppression
• Ruggedness and reliability □□Integrated voltage .