MIC49500 Datasheet | Micrel Semiconductor

Description The MIC49500 is an ultra-high-bandwidth, lowdropout, 5.0A voltage regulator ideal for powering core voltages of low-voltage microprocessors. The MIC49500 implements a dual supply configuration allowing for very low output impedance and very fast transient response. The MIC49500 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 6V and the bias supply requires between 3V and 6V for proper operation. The MIC49500 can regulate to an output voltage as low as 0.7V, making it an ideal product for low-voltage to low-voltage conversion. The MIC49500 requires a minimum of output capacitance for stability, working optimally with any type of capacitor, including small ceramic capacitors. Available in fixed output voltages from 0.9V to 1.8V and adjustable output voltages down to 0.7V, the MIC49500 es in both 7-pin S-Pak and TO-263 packages. The MIC49500 is rated to the full operating temperature range of -40°C to 125°C junction temperature. Features - Input voltage range: - VIN: 1.4V to 6V - VBIAS: 3.0V to 6V - Stable with 10µF ceramic output capacitor - +1.0% initial output tolerance - Maximum dropout (VIN - VOUT) is 500m V over temperature - Adjustable output voltage down to 0.7V - Ultra Fast Transient Response (Up to 10MHz bandwidth) - Excellent line and load regulation specifications - Logic controlled shutdown option - Thermal shutdown and current limit protection - Thin 7-pin S-Pak package - TO-263 7-pin package - - 40°C to +125°C operating junction temperature range Applications - - - - ASIC Core Voltage Regulator PLD/FPGA Core Power Supply Linear Point-of-Load Conversion High Speed Post-Regulator Typical Application VIN = 2.0V MIC49500WR IN OUT VOUT = 1.0V R1 VBIAS = 3.1V CBIAS = 1µF Ceramic CIN = 1µF Ceramic BIAS ADJ R2 GND COUT = 10µF Ceramic Output Current (2A/div) Output Voltage (50m V/div) Load Transient VOUT = 1.8V VIN = 2.8V VBIAS = 3.9V 5A COUT...