MIC59150 Ultra High Speed 1.5A LDO General Description Features The MIC59150 is a high-bandwidth, low-dropout, 1.5A Input voltage range: linear voltage regulator ideal for powering core voltages of V = 1.0V to 3.8V IN low-power microprocessors. The MIC59150 implements a V = 3.0V to 5.5V BIAS dual supply conguration allowing for a very low output Stable with 1F ceramic capacitor impedance and a very fast transient response. Maximum dropout voltage of 250mV over temperature The MIC59150 requires a bias input supply and a main Adjustable output voltage down to 0.5V input supply, allowing for ultra-low input voltages on the main supply rail. The device operates from an input supply Ultra fast transient response of 1.0V to 3.8V and bias supply between 3V and 5.5V. The Excellent line and load regulation specifications MIC59150 offers adjustable output voltages down to 0.5V. Logic controlled shutdown option The MIC59150 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 +125 C The MIC59150 is available in an 8-pin EPAD SOIC 8-pin EPAD SOIC package and its junction temperature range is 40C to +125C. Data sheets and support documentation can be found on Applications Micrels web site at: www.micrel.com. Telecommunications processors Graphics processors Computer peripheral cards Logic IC power supply SMPS post regulators Microprocessors Digital TVs Typical Application MIC59150YME VIN VIN VOUT VOUT CIN=1F (Ceramic) R1 VBIAS VBIAS COUT=1F ADJ (Ceramic) EN EN CBIAS=1F GND R2 (Ceramic) Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC59150 Ordering Information (1) Part Number Voltage Junction Temperature Range Package Lead Finish MIC59150YME Adj. 40C to +125C 8-Pin EPAD SOIC RoHS Compliant Note: 1. Other Voltage available. Contact Micrel for detail. Pin Configuration GND EN 1 8 VBIAS ADJ 2 7 3 6 VIN VIN 4 5 VOUT VOUT 8-Pin EPAD SOIC (ME) Pin Description Pin Number Pin Name Pin Function 1 EN Enable (Input): CMOS compatible input. Logic high = enable, logic low = shutdown. 2 VBIAS Input bias voltage for powering all circuitry on the regulator with the exception of the output power device. 3, 6 VIN Input voltage needed for the output power device. 4, 5 VOUT Regulator Output. 7 ADJ Adjustable regulator feedback input. Connect to resistor voltage divider. 8 GND Ground. M9999-121808-A December 2008 2
