Microchip Technology MIC49300-1.2BR

Description
The MIC49300 is a high-bandwidth, low-dropout, 3.0A voltage regulator designed for powering core voltages of low-power microprocessors. It utilizes a dual supply configuration for low output impedance and fast transient response. The MIC49300 requires a bias input supply and a main input supply, allowing for ultra-low input voltages on the main supply rail. It offers fixed output voltages from 0.9V to 1.8V and adjustable output voltages down to 0.9V. The MIC49300 requires minimal output capacitance for stability and works optimally with small ceramic capacitors. It is available in a 5-pin S-Pak package and operates over a junction temperature range of -40°C to 125°C.

Features
Input Voltage Range:
VIN: 1.4V to 6.5V
VBIAS: 3.0V to 6.5V
Stable with 1uF 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 S-Pak package
Junction temperature range: -40°C to 125°C

Applications
Graphics processors
PC Add-In Cards
Microprocessor core voltage supply
Low voltage digital ICs
High Efficiency Linear power supplies
SMPS post regulators