MIC47300 Datasheet | Micrel Semiconductor

Description The MIC47300 is a high-bandwidth, low-dropout, 3A voltage regulator ideal for powering core voltages of lowpower microprocessors. The MIC47300 implements a dual supply configuration allowing for very low output impedance and very fast transient response. The MIC47300 requires a bias input supply between 3V and 6.5V for proper operation. The main input supply rail operates from 1.4V to 6.5V that allows for adjustable output voltages down to 0.9V. The MIC47300 requires a minimum of 1µF output capacitance for stability, and optimal operation is achieved with small ceramic capacitors. The MIC47300 is available in a 5-pin power D-Pak package (TO-252) with an operating temperature range of - 40°C to +125°C. Datasheets and support documentation can be found on Micrel’s web site at: .micrel.. 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 400m V over temperature - Adjustable output voltage down to 0.9V - Ultra fast transient response (Up to 10MHz bandwidth) - Excellent line and load regulation specifications - Power D-Pak package (TO-252) - Thermal shutdown and current-limit protection - 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 Typical Application- Figure 1. Typical Application Circuit - See Thermal Design Section Micrel Inc. - 2180 Fortune Drive - San Jose, CA 95131 - USA - tel +1 (408) 944-0800 - fax + 1 (408) 474-1000 - http://.micrel. October...