onsemi LED Drivers CAT37TDI-TE7

The CAT37TDI-TE7 is a CMOS white LED driver boost converter designed to efficiently drive up to four white LEDs in series. It operates with an input voltage range of 2.5V to 7V and provides adjustable output current up to 40mA, making it suitable for battery-powered applications. The device features a low quiescent current of 0.5mA and a shutdown current of less than 1µA, allowing for minimal power consumption when not in use. With a high switching frequency of 1.2MHz, the CAT37TDI-TE7 enables the use of small external components, contributing to a compact design. It includes load fault protection against open-circuit conditions and allows for LED dimming through DC voltage, logic signals, or pulse width modulation (PWM). The product is housed in a low-profile 5-lead SOT23 package, making it ideal for applications such as digital cameras, portable MP3 players, and backlighting for color LCDs and keypads.