ACT6358NH-T

ACT6358 High-Efficiency, 40V Step-Up WLED Bias Supply FEATURES High-Efficiency DC/DC WLED Bias Supply Internal 40V, 0.55Ω Power MOSFET Up to 10 WLEDs per String 1A Peak Current Supports Analog and PWM LED Dimming Integrated Over-Voltage Protection (OVP) Programmable Soft-Start Function Thermal Shutdown Cycle-by-Cycle Over Current Protection Tiny TDFN33-8 Package APPLICATIONS TFT LCD Displays Smart Phones Portable Media Players GPS/Personal Navigation Devices SIMPLIFIED APPLICATION CIRCUIT GENERAL DESCRIPTION The ACT6358 step-up DC/DC converter drives white LEDs with an externally programmable constant current. This device features integrated, 40V power MOSFETs that are capable of driving up to ten white LEDs in series, providing inherent current matching for uniform brightness. WLED brightness adjustment is easily achieved via a dual-function pin, which accepts either a PWM or an analog dimming control signal. The ACT6358 features a variety of protection circuits, including integrated over voltage protection (OVP), programmable soft-start, cycle-by-cycle current limiting, and thermal shutdown protection circuitry. The ACT6358 has a 1A current limit. It is available in a small 3mm x 3mm 8-pin TDFN33-8. Data Sheet Rev. 2.0, January 19, 2020 | Subject to change without notice 1 of 10 www.qorvo.com ACT6358 High-Efficiency, 40V Step-Up WLED Bias Supply ORDERING INFORMATION PART NUMBER CURRENT LIMIT TEMPERATURE RANGE ACT6358NH-T 1A -40°C to 85...