描述 Description

Qorvo's ACT8311 is a current-mode, fixed-frequency PWM, synchronous step-down DC/DC converter that is capable of delivering 1.5 A with efficiency of up to 95%. This device operates with a fixed frequency of 1.35 MHz, minimizing noise in sensitive equipment as well as optimizing both efficiency and component size and cost.
This device features a very low-resistance power MOSFET and 100% duty cycle operation, making it an ideal choice for portable applications requiring a 3.0 V or 3.3 V rail to be generated from a Li+ battery. ACT8311 is capable of supplying up to 1.5 A of output current. It also has adjustable output voltages that are programmable down to 1.2 V.
Contact Qorvo for custom fixed output voltage availability.
ACT8311 is available in a 3 x 3 mm 8PIN TDFN33-8 package.

特性 Features

? Multiple patents pending
? Up to 95% high efficiency
? Up to 1.5 A guaranteed output current (ACT8311)
? 1.35 MHz constant frequency operation
? 100% duty cycle low-dropout operation
? 0.1 μA shutdown current
? Enable/disable control
? Minimal external components
? Internal synchronous rectifier eliminates Schottky diode

應(yīng)用 Application

? Wireless Handhelds
? Portable Devices
? GPS / PND equipment