MIC49150

MIC49150 1.5A Low Voltage LDO Regulator w/Dual Input Voltages General Description The MIC49150 is a high-bandwidth, low-dropout, 1.5A voltage regulator ideal for powering core voltages of lowpower microprocessors. The MIC49150 implements a dual supply configuration allowing for very low output impedance and very fast transient response. The MIC49150 requires a bias input supply and a main input supply, allowing for ultra-low input voltages on the main supply rail. The input supply operates from 1.4V to 6.5V and the bias supply requires between 3V and 6.5V for proper operation. The MIC49150 offers fixed output voltages from 0.9V to 1.8V and adjustable output voltages down to 0.9V. The MIC49150 requires a minimum of output capacitance for stability, working optimally with small ceramic capacitors. The MIC49150 is available in an 8-pin power MSOP package and a 5-pin S-Pak. Its operating temperature range is –40°C to +125°C. Data sheets and support documentation can be found on Micrel’s web site at www.micrel.com. Features Input Voltage Range: – VIN: 1.4V to 6.5V – VBIAS: 3.0V to 6.5V Stable with 1µF ceramic capacitor ±1% initial tolerance Maximum dropout voltage (VIN–VOUT) of 500mV over temperature Adjustable output voltage down to 0.9V Ultra fast transient response (Up to 10MHz bandwidth) Excellent line and load regulation specifications Logic controlled shutdown option Thermal shutdown and current limit protection Power MSOP-8 and S-Pak packages Junction t...