| Description & Applications | BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER • Low voltage operation : Startup at 0.9 V min (IOUT = 1 mA) • Low current consumption : During operation 23.2 µA (VOUT = 3.3 V) During shutdown 0.5 µA (max.) • Duty ratio : 50 % / 75 % built-in auto-switching-type PFM control circuit (A, B, and D type) 75 % built-in fixed-type PFM control circuit (C type) • External parts : Coil, capacitor, and diode • Output voltage : Selectable in 0.1 V steps between 2.0 V to 6.5 V (A, B, and C type) Selectable in 0.1 V steps between 1.5 V to 6.5 V (D type) • Output voltage accuracy : ±2.4% • Shutdown function (A type) • VDD / VOUT separate type (D type) • Lead-free products • Power supplies for portable equipment such as digital cameras, electronic notebooks, and PDAs • Power supplies for audio equipment such as portable CD / MD players • Constant voltage power supplies for cameras, video equipment, and communications equipment • Power supplies for microcomputers |