MB39C015

FUJITSU MICROELECTRONICS DATA SHEET DS04-27254-2E ASSP for Power Management Applications 2 ch DC/DC Converter IC Built-in Switching FET, Synchronous Rectification, and Down Conversion Support MB39C015 ■ DESCRIPTION The MB39C015 is a current mode type 2-channel DC/DC converter IC built-in voltage detection, synchronous rectifier, and down conversion support. The device is integrated with a switching FET, oscillator, error amplifier, PWM control circuit, reference voltage source, and voltage detection 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/ch (Max) Input voltage range : 2.5 V to 5.5 V Operating frequency : 2.0 MHz (Typ) No flyback diode needed Low dropout operation : For 100% on duty Built-in high-precision reference voltage generator : 1.30 V ± 2% Consumption current in shutdown mode : 1 µA or less Built-in switching FET : P-ch MOS 0.3 Ω (Typ) N-ch MOS 0.2 Ω (Typ) High speed for input and load transient response in the current mode Over temperature protection Packaged in a compact package : QFN-24 ■ APPLICATIONS Flash ROMs MP3 players Electronic dictionary devices Surveillance cameras Portable GPS navig...