ACT6358数据手册Qorvo中文资料规格书

描述 Description

Qorvo's ACT6358 is a step-up DC/DC converter that is used to drive white LEDs with an externally programmable constant current. The device features integrated 40 V 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 product 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 product has a 1 A current limit.
ACT6358 is available in a small 3mm x 3mm 8-pin TDFN33-8 package.

特性 Features

• High-efficiency DC/DC WLED bias supply
• Internal 40 V, 0.55 Ohm power MOSFET
• Up to 10 WLEDs per string
• Two peak current ACT6358: 1A
• Supports analog and PWM LED dimming
• Integrated over-voltage protection (OVP)
• Programmable soft-start function
• Thermal shutdown
• Cycle-by-cycle over-current protection

应用 Application

• TFT LCD Displays
• Smartphones
• Portable Media Players
• GPS / Personal Navigation Devices