MIC3203-1YM

LED Driver IC Overview

The MIC3203-1YM is a hysteretic, step-down, constant-current High-Brightness LED driver controller from Microchip Technology. It operates within an input voltage range of 4.5 V to 42 V and delivers up to 1 A output current. The device features a fixed switching frequency of 1.5 MHz and includes high-side current sensing for precise regulation. Designed for robust performance, it functions across an extended temperature range of -40°C to +125°C. The component is housed in an 8-lead SOIC package and supports PWM dimming control.

LED Driver IC Feature Summary

• Hysteretic control architecture for fast transient response
• Integrated high-side current sense amplifier
• PWM dimming capability for brightness control
• Fixed 1.5 MHz switching frequency

LED Driver IC Applications

• Interior automotive lighting systems
• Exterior automotive lighting applications
• General-purpose HB LED illumination
• Industrial LED lighting fixtures

LED Driver IC Procurement Notes

Verify the specific suffix (e.g., -TR for tape and reel or tube packaging) against your assembly requirements. Confirm RoHS compliance status with the manufacturer as specifications may vary by production batch. Ensure the selected variant matches the required operating temperature range and package type for your PCB design constraints.

LED Driver IC Selection Notes

Select this component for designs requiring a buck topology with integrated current sensing. It is suitable for single-channel HB LED applications where a fixed frequency hysteretic control loop is preferred. Consider the 42 V maximum input limit and 1 A current capacity when sizing external components. Verify compatibility with system dimming signals.

LED Driver IC Part Context

This part belongs to the MIC3203 series of LED drivers. It is manufactured by Microchip Technology, which acquired Micrel Semiconductor. The device is classified under PMIC LED Drivers and serves as a solution for high-brightness LED applications requiring efficient step-down conversion.

LED Driver IC Replacement Considerations

Check for MIC3203-1YM-TR if reel packaging is required instead of tubes. Verify cross-reference availability with other hysteretic buck LED drivers if supply constraints exist.