Microchip | MIC3223YTSE

The MIC3223 is a peak current mode control PWM boost regulator and the 4.5 V and 20 V operating input voltage range allows multiple applications from a 5 V or a 12 V bus.

The MIC3223 implements a fixed internal 1 MHz switching frequency to allow for a reduction in the design footprint size. Power consumption has been minimized through the implementation of a 200 mV feedback voltage that provides an accuracy of ±5%. The MIC3223 can be dimmed through the use of a PWM signal and features an enable pin for a low power shutdown state. The MIC3223 is a very robust LED driver and offers the following protection features: over voltage protection (OVP), thermal shutdown, switch current limiting and under voltage lockout (UVLO). The MIC3223 is offered in a low profile exposed pad 16-pin TSSOP package.

Key Features:

• 4.5 V to 20 V supply voltage.
• 200 mV feedback voltage with an accuracy of ±5%.
• Step-up output voltage (boost) conversion up to 37 V.
• 1 MHz switching frequency.
• 100 mΩ/3.5 A internal power FET switch.
• LEDs can be dimmed using a PWM signal.
• User settable LED current (through external resistor).
• Externally programmable soft-start.
• Protection features that include:
• Output over-voltage protection (OVP).
• Under-voltage lockout (UVLO).
• Over temperature protection.
• Junction temperature range: -40°C to +125°C.
• Available in a exposed pad 16-pin TSSOP package.

Applications:

• Architectural lighting.
• Industrial lighting.
• Signage.
• Landscape lighting (garden/pathway).
• Under cabinet lighting.
• MR-16 bulbs.