Skyworks AAT3176AIDH-T1

Регулятор постоянного тока DC2.7V5.5V500 мА (вспышка)

Overview

The AAT3176AIDH-T1 is a high output current, high efficiency, low noise, low profile charge pump converter IC, ideal for multi-function LED photo-flash applications where solution cost, size, and efficiency are critical. The charge pump is capable of delivering up to 500mA of output current and can be easily programmed in 16 steps with a single GPIO output through AnalogicTech's S²Cwire™ (Simple Serial Control) interface. This allows smooth transitions and flexible adjustment of brightness in flash or other lighting modes. Operating at a fast 1MHz switching frequency, the dual-mode (1x/2x) operation of the internal charge pump offers excellent power efficiency for both flash and movie modes and combined with a low external parts count (one 1µF flying capacitors and small bypass capacitors at Vand OUT), the AAT3176AIDH-T1 is ideally suited for small, battery-powered applications.The maximum current for both Flash and Movie mode is set by two independent external resistors. The MODE pin is adopted to select the LED current between Movie (Torch) and Flash mode.The AAT3176AIDH-T1 has a thermal management system to protect the device in the event of short-circuit, open-circuit, and over-temperature condition. Built-in soft-start circuitry prevents excessive in-rush current during startup. The shutdown feature disconnects the load from Vand reduces quiescent current to less than 1.0µA.The AAT3176AIDH-T1 is available in the 2.2 x 2.2mm Pb-free 10-pin TDFN package.

Features

Applications

• Portable lighting
• Gallery lighting
• Museum lighting
• High-end retail lighting
• Medical surgery lighting
• Replacement lamps
• Panel lighting
• Down lights
• Linear fluorescent
• A- lamps