A7320A

AiT Semiconductor Inc. www.ait-ic.com A7320A DC-DC CONVERTER/ BUCK (STEP-DOWN) 18V (30V SPIKE) 2A SYNCHRONOUS PFM/PWM BUCK CONVERTER DESCRIPTION FEATURES The A7320A is a high efficiency current-mode synchronous, 18V/2A buck converter. Its input voltage ranges from 4.5V to 18V and it provides an adjustable regulated output voltage from 0.923V to 15V while delivering up to 2A of output current. The internal synchronous switches increase efficiency and eliminate the need for an external Schottky diode. The switching frequency is set to 340KHz. And the A7320A will automatically switch between PFM and PWM mode based on the load current, thus to enhance the converter efficiency at light load. A7320A consists of many protection block such as UVLO, input voltage over voltage protection to stand much higher input voltage spike, thermal protection and output short circuit protection. The A7320A is available in SOP8 and PSOP8 packages.  Adjustable Output Voltage, VFB=0.923V  Maximum output current is 2A  Range of operation input voltage: Max 18V  Withstand input voltage spike >30V  Standby current: 1mA (typ.)  Operating current at zero load: 1.2mA (typ.)  Line regulation: 0.1%/V (typ.)  Load regulation: 10mV (typ.)  High efficiency, up to 95%  Environment Temperature: -20°C ~ 85°C  Available in SOP8 and PSOP8 Packages APPLICATION  Set-top-box  Consumer Electronic Device for automobile  LCD Monitor and LCD TV  Portable DVD  ADSL Modem, WLAN router  Other 12V or doub...