MIC47053 Datasheet | Micrel Semiconductor

Description Features The MIC47053 is a high-speed, adjustable output ultra-low dropout, dual NMOS ULDO™ designed to power point-ofload applications that require a low-voltage, high-current power supply. The MIC47053 can source 500m A of output current while only requiring a 1µF ceramic output capacitor for stability. The MIC47053 offers 2% output voltage accuracy over temperature, low dropout voltage (49m V @ 500m A), and low ground current which makes this device ideally suited for mobile and point-of-load applications. The MIC47053 has an NMOS output stage offering very low output impedance. The NMOS output stage makes for a unique ability to respond very quickly to sudden load changes such as that required by a microprocessor, DSP or FPGA. The MIC47053 consumes little quiescent current and therefore can be used for driving the core voltages of mobile processors and post regulating a core DC/DC converter in any processor. The MIC47053 is available in the tiny 2mm x 2mm Thin DFN packages with an operating junction temperature range of - 40C to 125C. Data sheets and support documentation can be found on Micrel’s web site at: .micrel.. - Wide input voltage range - Input voltage: 1.0V to 3.6V - Bias voltage: 2.3V to 5.5V - Adjustable output voltage range down to 0.4V - Low dropout voltage of 49m V at 500m A - Low shutdown current: 0.1µA typical - ±2% initial output voltage accuracy over temperature - High bandwidth - very fast transient response - Stable with a 1µF ceramic output capacitor - Logic level enable input - UVLO on both supply voltages - Available in thermally-enhanced 2mm x 2mm Thin DFN package - Junction temperature range of - 40C to +125C Applications - Point-of-load applications - PDAs, Notebooks, and Desktops - DSP, PLD, and FPGA power supply - Low-voltage post regulation Typical Application ULDO is a trademark of Micrel...