MIC33030

MIC33030 8MHz 400mA Internal Inductor Buck Regulator with HyperLight Load™ General Description The MIC33030 is a high-efficiency, 8MHz, 400mA 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 2.5mm x 2.0mm MLF® package saves precious board space and requires only two external capacitors. The MIC33030 is designed for use with tiny output capacitors as small as 2.2µF. 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 1mA, with a very-low quiescent current of 21µA. At higher loads, the MIC33030 provides a constant switching frequency up to 8MHz. The MIC33030 is available in a 10-pin 2.5mm x 2.0mm MLF® package with an operating junction temperature range of –40°C to +125°C. Datasheets and support documentation can be found on Micrel’s web site at: www.micrel.com. Features Internal Inductor − Simplifies design to two external capacitors Input voltage: 2.7V to 5.5V Output voltage accuracy of ±2.5% over temperature 400mA output current Efficiency up to 78% at 1mA 21µA typical quie...