Newest Catalyst Quad-Mode LED Driver Offers 10% Higher Efficiency And Easy Interface Control For Portable Device Backlighting

Catalyst Semiconductor, Inc. a supplier of analog, mixed-signal and non-volatile memory semiconductors, has expanded its line of patented Quad-Mode fractional charge pump LED drivers with a new device optimized for portable products. The new CAT3637 addresses the requirements for high-efficiency and easy LED programming in these products, with 10 percent higher efficiency (compared to three-mode charge pumps) and a simple, 1-wire EZDim interface control.

The CAT3637 is optimized for applications with one bank of five or six identical LED channels, a typical configuration for larger LED screen portable products. The device incorporates a simplified version of Catalyst' already easy-to-use, 1-wire EZDim interface, which supports 16 output power levels, from zero to 30mA full brightness 2mA resolution steps. With efficiency levels as high as 92 percent, no added capacitors required, and a tiny 3 x 3mm, low-profile TQFN package, the Quad-Mode CAT3637 saves significant board space and costs in next-generation portable products.

The CAT3637 joins the following devices in Catalyst'Quad-Mode family of LED drivers: the CAT3604V four-channel LED driver with PWM dimming interface; and the CAT3636 six-channel, CAT3644 four-channel and CAT3643 three-channel devices with 1-wire EZDim interface.

Product Features

Patented Quad-Mode high-efficiency charge pump switching architecture
Easy-to-use, 1-Wire EZDim interface control
Fourth charge pump mode achieves 1.33x boost mode with only 2 flying capacitors
Power efficiency up to 92 percent
Drives up to 6 LEDs at 30mA each, in 2mA steps
Fully protected
Packaging: 16-pad TQFN, 3mm x 3mm

The CAT3637 joins the following devices in Catalyst'Quad-Mode family of LED drivers: the CAT3604V four-channel LED driver with PWM dimming interface; and the CAT3636 six-channel, CAT3644 four-channel and CAT3643 three-channel devices with 1-wire EZDim interface.

Disclaimers of Warranties
1. The website does not warrant the following:
1.1 The services from the website meets your requirement;
1.2 The accuracy, completeness, or timeliness of the service;
1.3 The accuracy, reliability of conclusions drawn from using the service;
1.4 The accuracy, completeness, or timeliness, or security of any information that you download from the website
2. The services provided by the website is intended for your reference only. The website shall be not be responsible for investment decisions, damages, or other losses resulting from use of the website or the information contained therein<
Proprietary Rights
You may not reproduce, modify, create derivative works from, display, perform, publish, distribute, disseminate, broadcast or circulate to any third party, any materials contained on the services without the express prior written consent of the website or its legal owner.
XLamp® XP-G3 LEDs are optimized for directional, high lumen lighting applications where efficacy and optical control are critical, such as roadway, portable and horticulture. The compact and proven 3.45 mm XP platform has an excellent ecosyst... READ MORE

Nichia further demonstrates its commitment in UV-C LED technology with its release of the high output NC4U334BR. Tokushima, Japan — 6 October 2021: NICHIA, the world’s largest LED manufacturer and inventor of the high-brightness bl... READ MORE