MIC33030 8MHz 400mA Internal Inductor Buck Regulator with HyperLight Load General Description Features Internal Inductor The MIC33030 is a high-efficiency, 8MHz, 400mA synchronous buck regulator with an internal inductor and Simplifies design to two external capacitors Input voltage: 2.7V to 5.5V HyperLight Load mode. HyperLight Load provides very-high efficiency at light loads and ultra-fast transient Output voltage accuracy of 2.5% over temperature response that is perfectly suited for supplying processor 400mA output current core voltages. An additional benefit of this proprietary Efficiency up to 78% at 1mA architecture is the very-low output ripple voltage 21A typical quiescent current throughout the entire load range with the use of small Up to 8MHz PWM operation in continuous mode output capacitors. The tiny 2.5mm x 2.0mm MLF package Ultra-fast transient response saves precious board space and requires only two external Low-voltage output ripple capacitors. 30mVpp ripple in HyperLight Load mode The MIC33030 is designed for use with tiny output 7mV output voltage ripple in full PWM mode capacitors as small as 2.2F. This gives the MIC33030 the Fully-integrated MOSFET switches ease of use of an LDO with the efficiency of a HyperLight 0.01A shutdown current Load DC converter. Thermal shutdown and current-limit protection The MIC33030 achieves efficiency in HyperLight Load Fixed and adjustable output voltage options available mode as high as 78% at 1mA, with a very-low quiescent (0.7V to 3.6V) current of 21A. At higher loads, the MIC33030 provides a 2.5mm x 2.0mm 10-Lead MLF constant switching frequency up to 8MHz. 40C to +125C junction temperature range The MIC33030 is available in a 10-pin 2.5mm x 2.0mm MLF package with an operating junction temperature Applications range of 40C to +125C. Mobile handsets Datasheets and support documentation can be found on Portable media/MP3 players Micrels web site at: www.micrel.com. Portable navigation devices (GPS) WiFi/WiMax/WiBro modules Digital Cameras Wireless LAN cards USB-powered devices Portable applications Typical Application Fixed-Output MIC33030 Adjustable-Output MIC33030 HyperLight Load is a trademark of Micrel, Inc. MLF and MicroLeadFrame are registered trademark Amkor Technology Inc. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel Inc. MIC33030 Ordering Information Marking Nominal Output Junction Temperature Part Number Package Lead Finish Code Voltage Range MIC33030-AYHJ 3GFA ADJ 40C to +125C 10-pin 2.5mm x 2.0mm MLF Pb-Free MIC33030-JYHJ 3GFJ 2.5V 40C to +125C 10-pin 2.5mm x 2.0mm MLF Pb-Free MIC33030-GYHJ 3GFG 1.8V 40C to +125C 10-pin 2.5mm x 2.0mm MLF Pb-Free MIC33030-4YHJ 3GF4 1.2V 40C to +125C 10-pin 2.5mm x 2.0mm MLF Pb-Free Notes: 1. Other options available. Contact Micrel for details. 2. Thin MLF is GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free. Pin Configuration 2.5mm x 2.0mm MLF (HJ) 2.5mm x 2.0mm MLF (HJ) Fixed (Top View) Adjustable (Top View) Pin Description Fixed Option ADJ Option Pin Name Pin Function Sense: Connect to V as close to output capacitor as possible to sense OUT 1 1 SNS output voltage. 2 NC Not internally connected. Feedback: Connect resistor divider at this node to set output voltage. Resistors 2 FB should be selected based on a nominal V = 0.62V. FB Enable: Logic high enables operation of the regulator. Logic low will shut down 3 3 EN the device. Do not leave floating. 4, 5 4, 5 SW Switch: Internal power MOSFET output switches. Output Voltage: The output of the regulator. Connect to SNS pin. For adjustable 6, 7 6, 7 VOUT option, connect to feedback resistor network. 8 8 PGND Power Ground. 9 9 AGND Analog Ground. 10 10 VIN Input Voltage: Connect a capacitor to ground to decouple the noise. EP EP HS PAD Connect to PGND or AGND. M9999-020311-C February 2011 2