MIC59300YME Microchip

MIC59300 Ultra High Speed 3A LDO General Description Features The MIC59300 is a high-bandwidth, low-dropout, 3A linear Input voltage range: voltage regulator ideal for powering core voltages of low- V = 1.0V to 3.8V IN power microprocessors. The MIC59300 implements a dual V = 3.0V to 5.5V BIAS supply conguration allowing for a very low output Stable with 1F ceramic capacitor impedance and a very fast transient response. 1% initial tolerance The MIC59300 requires a bias input supply and a main Maximum dropout voltage of 500mV over temperature input supply, allowing for ultra-low input voltages on the main supply rail. The device operates from an input supply Adjustable output voltage down to 0.5V of 1.0V to 3.8V and bias supply between 3V and 5.5V. The Ultra fast transient response MIC59300 offers xed output voltages and adjustable Excellent line and load regulation specifications output voltages down to 0.5V. Logic controlled shutdown option The MIC59300 requires a minimum output capacitance for Thermal shutdown and current limit protection stability, working optimally with small ceramic capacitors. Junction temperature range: 40 C to +125C The MIC59300 is available in a 5-pin TO-263 and an 8-pin TO-263 & 8-pin EPAD SOIC EPAD SOIC package and its junction temperature range is 40C to +125C. Pin Compatible Upgrade to MIC49300 Data sheets and support documentation can be found on Micrels web site at: www.micrel.com. Applications Telecommunications processors Graphics processors Computer peripheral cards Logic IC power supply SMPS post regulators Microprocessors Digital TVs Typical Application MIC59300YME 3, 6 4, 5 VIN VIN VOUT VOUT CIN=1F (Ceramic) R1 2 VBIAS VBIAS COUT=1F 7 ADJ (Ceramic) 1 EN EN CBIAS=1F R2 GND EP (Ceramic) 89 Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC59300 Ordering Information (1) Part Number Voltage Junction Temperature Range Package Lead Finish MIC59300-1.2YME 1.2V 40C to +125C 8-Pin EPAD SOIC RoHS Compliant MIC59300YME Adj. 40C to +125C 8-Pin EPAD SOIC RoHS Compliant MIC59300-1.2WU 1.2V 40C to +125C 5-Pin TO-263 RoHS Compliant MIC59300WU Adj. 40C to +125C 5-Pin TO-263 RoHS Compliant Note: 1. Other Voltage available. Contact Micrel for detail. Pin Configuration 8-Pin EPAD SOIC 8-Pin EPAD SOIC MIC59300YME MIC59300-1.2YME VOUT VOUT VIN VIN GND GND VBIAS VBIAS ADJ EN 5-Pin TO-263 5-Pin TO-263 MIC59300WU MIC59300-1.2WU M9999-010809-A January 2009 2