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MIC49150-1.8BMM Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC49150-1.8BMM Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 13 page MIC49150 1.5A Low Voltage LDO Regulator w/Dual Input Voltages Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( 408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com November 2006 1 M9999-111306 General Description The MIC49150 is a high-bandwidth, low-dropout, 1.5A volt- age regulator ideal for powering core voltages of low- power 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 pack- age 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 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 MIC49150BR GND COUT = 1µF Ceramic BIAS IN OUT CBIAS = 1µF Ceramic VOUT = 1.0V VIN = 1.8V VBIAS = 3.3V ADJ CIN = 1µF Ceramic R1 R2 Low Voltage, Fast Transient Response Regulator |
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