LP38856 Datasheet | National Semiconductor

Description Features n Standard VOUT values of 0.8V and 1.2V The LP38856 is a high-current, fast-response regulator n Stable with 10 µF ceramic capacitors which can maintain output voltage regulation with an extremely low input to output voltage drop. Fabricated on a n Dropout voltage of 240 m V (typical) at 3A load current CMOS process, the device operates from two input voltages: n Precision Output Voltage across all line and load VBIAS provides power for the internal bias and control circonditions: cuits, as well as drive for the gate of the N-MOS power - ± 1.0% for TJ = 25˚C transistor, while VIN supplies power to the load. The use of - ± 2.0% for 0˚C ≤ TJ ≤ +125˚C an external bias rail allows the part to operate from ultra low - ± 3.0% for -40˚C ≤ TJ ≤ +125˚C VIN voltages. Unlike bipolar regulators, the CMOS architecn Over-Temperature and Over-Current protection ture consumes extremely low quiescent current at any outn Available in 5 lead TO-220 and TO-263 packages put load current. The use of an N-MOS power transistor n Custom VOUT values between 0.8V and 1.2V are results in wide bandwidth, yet minimum external capacitance available is required to maintain loop stability. n -40˚C to +125˚C Operating Temperature Range The fast transient response of this device makes it suitable for use in powering DSP, Microcontroller Core voltages and Applications Switch Mode Power Supply post regulators. The LP38856 is n ASIC Power Supplies In: available in TO-220 and TO-263 5-Lead packages. - Desktops, Notebooks, and Graphics Cards, Servers Dropout Voltage: 240 m V (typical) at 3A load current. - Gaming Set Top Boxes, Printers and Copiers Low Ground Pin Current: 14 m A (typical) at 3A load curn Server Core and I/O Supplies rent. n DSP and FPGA Power Supplies pin is Shutdown Current: 1 µA (typical) IIN(GND) when EN . n SMPS Post-Regulator low. Precision Output Voltage: ± 1.0% for TJ = 25˚C and ± 2.0% for 0˚C ≤ TJ ≤ +125˚C, across all line and load conditions e Data She Typical...