A7222

AiT Semiconductor Inc. www.ait-ic.com A7222 DC-DC CONVERTER BUCK (STEP-DOWN) 500kHz, 18V, 2A SYNCHRONOUS DESCRIPTION The A7222 is a fully integrated, high-efficiency 2A synchronous rectified step-down converter. The A7222 operates at high efficiency over a wide output current load range. This device offers two operation modes, PWM control and PFM Mode switching control, which allows a high efficiency over the wider range of the load. The A7222 is available in SOT-26 package. ORDERING INFORMATION Package Type SOT-26 SPQ: 3,000pcs/Reel Note Part Number E6 A7222E6R A7222E6VR V: Halogen free Package R: Tape & Reel AiT provides all RoHS products TYPICAL APPLICATION FEATURES  High Efficiency: Up to 96%  500kHz Frequency Operation  2A Output Current  No Schottky Diode Required  4.2V to 18V Input Voltage Range  0.8V Reference  Slope Compensated Current Mode Control for Excellent Line and Load Transient Response  Integrated internal compensation  Stable with Low ESR Ceramic Output Capacitors  Over Current Protection with Hiccup-Mode  Thermal Shutdown  Inrush Current Limit and Soft Start  -40°C to +85°C Temperature Range  Available in SOT-26 package APPLICATION  Distributed Power Systems  Digital Set Top Boxes  Flat Panel Television and Monitors  Wireless and DSL Modems  Notebook Computer Figure 1. Figure 2. NOTE1: C1 and C2 recommended using 22uF ceramic capacitors. If the electrolytic capacitor is used, it is recommended that the ceramic capacitor in...