MICROCHIP MIC33030-GYHJ-TR

The MIC33030 is a high-efficiency, 8 MHz, 400 mA synchronous buck regulator with an internal inductor and HyperLight Load® mode. HyperLight Load® provides very high efficiency at light loads and ultra-fast transient response that is perfectly suited for supplying processor core voltages. An additional benefit of this proprietary architecture is the very low output ripple voltage throughout the entire load range with the use of small output capacitors. The tiny 2.5 mm × 2.0 mm HJDFN package saves precious board space and requires only two external capacitors. The MIC33030 is designed for use with tiny output capacitors as small as 2.2 μF. This gives the MIC33030 the ease of use of an LDO with the efficiency of a HyperLight Load® DC converter. The MIC33030 achieves efficiency in HyperLight Load® mode as high as 78% at 1 mA, with a very low quiescent current of 21 μA. At higher loads, the MIC33030 provides a constant switching frequency up to 8 MHz. The MIC33030 is available in a 10-pin 2.5 mm x 2.0 mm HJDFN package with an operating junction temperature range of -40°C to +125°C.

• Internal Inductor - Simplifies Design to Two External Capacitors
• Input Voltage: 2.7V to 5.5V
• Output Voltage Accuracy of ±2.5% over Temperature
• 400 mA Output Current
• Efficiency up to 78% at 1 mA
• 21 μA Typical Quiescent Current
• Up to 8 MHz PWM Operation in Continuous Mode
• Ultra-Fast Transient Response
• Low Voltage Output Ripple - 30 mVPP Ripple in HyperLight Load® Mode - 7 mV Output Voltage Ripple in Full PWM Mode
• Fully Integrated MOSFET Switches
• 0.01 μA Shutdown Current
• Thermal Shutdown and Current-Limit Protection
• Fixed and Adjustable Output Voltage Options Available (0.7V to 3.6V)
• 2.5 mm×2.0 mm 10 -Lead HJDFN Package
• -40°C to +125°C Junction Temperature Range

• Mobile Handsets
• Portable Media/MP3 Players
• Portable Navigation Devices (GPS)
• WiFi/WiMax/WiBro Modules
• Digital Cameras
• Wireless LAN Cards
• USB-Powered Devices
• Portable Applications