Microchip Technology MIC2230
The MIC2230 is a dual output, high-efficiency synchronous step-down DC/DC converter. The MIC2230 is ideally suited for portable and embedded systems that demand high power conversion efficiencies and fast transient performance, while offered in a very small package. The MIC2230 offers an ultra-low quiescent current in light load mode, assuring minimum current draw from battery powered applications in standby modes.FEATURES
● High Efficiency: Over 96%● Ultra-Low Quiescent Current: Only 28 μA
● Ultra-Low Shutdown Current: Less Than 1 μA
● Fast Transient Performance
● 2.5 MHz PWM Operation
● High Output Current Capability per Channel: 800 mA
● No Schottky Diodes Required
● Stable with 2.2 μH Inductor, 10 μF Ceramic Capacitor
● Adjustable Output Voltage Down to 0.8V
● Built-In Soft-Start Circuitry
● Current-Limit Protection
● Automatic Switching into Light Load Mode Operation
● /FPWM Pin allows Low-Noise Forced PWM Mode Operation
● Power Good Output with Internal 5 μA Current Source allows Sequencing with Programmable Delay Time
● Small Thermally Enhanced 3 mm × 3 mm TDFN-12L Package
APPLICATIONS
● MPU & ASIC Power● PDAs
● Digital Cameras
● PC Cards
● Wireless and DSL Modems
GENERAL DESCRIPTION
The MIC2230 was designed to only require miniature 2.2 μH inductors and 10 μF ceramic capacitors. The MIC2230 features a selectable mode that allows the user to trade-off lowest noise performance for low power efficiency.