TS2122AA

TS2122 Dual High-Efficiency PWM Step-Down DC/DC Converter FEATURES FOR EACH CHANNEL GENERAL DESCRIPTION           700mA Output Current High Efficiency up to 95% 2.5V to 5.5V Input Range Low Quiescent Current 130uA Adjustable Output from 0.6V to VIN No Schottky Diode Required 1.5MHz Constant Frequency Operation Low Dropout Operation: 100% Duty Cycle Small 12-Lead WDFN Package RoHS Compliant and 100% Lead(Pb)-Free The TS2122 is a dual high-efficiency PWM stepdown DC-DC converter. It is capable of delivering 700mA output each channel over a wide input voltage from 2.5V to 5.5V, the TS2122 is ideally suited for portable electronic devices that are powered from 1- cell Li-ion battery or from other power sources within the range such as cellular phones, PDAs and other handheld devices. The switching ripple is easily smoothed-out by small package filtering elements due to a fixed operation frequency of 1.5MHz. This along with small WDFN-12L 3X3 package provides small PCB area application. Other features include soft start, lower internal reference voltage with 2% accuracy, over temperature protection, and over current protection. APPLICATIONS     Personal Information Appliances Mobile Phones Wireless and DSL Modems Portable Instruments Figure 1 Typical Application Circuit for Adjustable Version September, 2009 – Re1 1 TS2122 TS2122 ORDERING INFORMATION PART NUMBER TS2122AA TEMP RANGE -40°C to 85°C SWICHING FREQUENCY 1.5MHz OUTPUT VOLTAGE (V) Adjustable OUTPUT CU...