MT7201C

The MT7201C from MAXIC is a buck, constant current LED driver IC operating in continuous conduction mode (CCM). It is designed to efficiently drive single or multiple series-connected LEDs when the input voltage exceeds the LED forward voltage.

This IC supports a wide input voltage range, specified as 6V to 40V in the datasheet and 6V to 60V on the manufacturer's page. It can deliver an externally adjustable output current of up to 1A (datasheet) or 1.2A (manufacturer page) with high accuracy of ±5%. The MT7201C integrates a power switch and a current sense circuit, simplifying the peripheral component requirements.

Key features include an ADJ pin for analog and PWM dimming signals, with automatic shutdown when the ADJ pin voltage drops below 0.2V, entering an ultra-low power standby state. It incorporates an internal PWM filter for soft-start functionality, which can be extended using an external capacitor. The device also utilizes frequency jittering to reduce EMI and offers inherent open-circuit protection.

Available in a SOT89-5 package, the MT7201C is suitable for various lighting applications, including low voltage halogen replacements, automotive lighting, industrial lighting, LED back-up lighting, illuminated signs, and stage lights. Its high efficiency, up to 97%, makes it an excellent choice for power-sensitive designs.