The following document contains information on Cypress products. FUJITSU MICROELECTRONICS DS04-27253-3E DATA SHEET ASSP for Power Management Applications 1 ch DC/DC Converter IC Built-in Switching FET, Synchronous Rectification, and Down Conversion Support MB39C014 DESCRIPTION The MB39C014 is a current mode type 1-channel DC/DC converter IC built-in switching FET, synchronous rectification, and down conversion support. The device is integrated with a switching FET, oscillator, error amplifier, PWM control circuit, reference voltage source, and POWERGOOD circuit. External inductor and decoupling capacitor are needed only for the external component. As combining with external parts enables a DC/DC converter with a compact and high load response characteristic, this is suitable as the built-in power supply for such as mobile phone/PDA, DVDs, and HDDs. FEATURES High efficiency : 96% (Max) Output current (DC/DC) : 800 mA (Max) Input voltage range : 2.5 V to 5.5 V Operating frequency : 2.0/3.2 MHz (Typ) No flyback diode needed Low dropout operation : For 100% on duty Built-in high-precision reference voltage generator : 1.20 V 2% Consumption current in shutdown mode : 1 A or less Built-in switching FET : P-ch MOS 0.3 (Typ) N-ch MOS 0.2 (Typ) High speed for input and load transient response in the current mode Over temperature protection Packaged in a compact package : SON10 APPLICATIONS Flash ROMs MP3 players Electronic dictionary devices Surveillance cameras Portable GPS navigators Mobile phones etc. Copyright2008 FUJITSU MICROELECTRONICS LIMITED All rights reserved 2008.11