3A Fast-Response High-Accuracy LDO Linear Regulator With Enable

The LP38856 is a high-current, fast-response Regulator which CAN maintain output voltage regulation with an extremely low input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: VBIAS provides power for the internal bias and control circuits, as well as drive for the Gate of the N-MOS Power Transistor while VIN supplies power to the load. The use of an external bias rail allows the part to operate from ultra low VIN voltages. Unlike bipolar Regulators the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an N-MOS Power Transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability.
The fast transient response of this device makes it suitable for use in powering DSP Microcontroller Core voltages and Switch Mode Power Supply post Regulators The LP38856 is available in TO-220 and TO-263 5-Lead packages.
Dropout Voltage: 240 mV (typical) at 3A load current.
Low Ground Pin Current: 14 mA (typical) at 3A load current.
Shutdown Current: 1 A (typical) IIN(GND) when EN pin is low.
Precision Output Voltage: 1.0% for TJ = 25C and 2.0% for 0C d TJ d +125C, across all line and load conditions
By National Semiconductor Corporation
Part Manufacturer Description Datasheet Samples
LP38856S-0.8/NOPB Texas Instruments 3A Fast-Response High-Accuracy LDO Linear Regulator with Enable 5-DDPAK/TO-263 -40 to 125
LP38856SX-0.8/NOPB Texas Instruments 3A Fast-Response High-Accuracy LDO Linear Regulator with Enable 5-DDPAK/TO-263 -40 to 125
LP38856T-1.2/NOPB Texas Instruments 3A Fast-Response High-Accuracy LDO Linear Regulator with Enable 5-TO-220 -40 to 125
LP38856SX-1.2/NOPB Texas Instruments 3A Fast-Response High-Accuracy LDO Linear Regulator with Enable 5-DDPAK/TO-263 -40 to 125
LP38856T-0.8/NOPB Texas Instruments 3A Fast-Response High-Accuracy LDO Linear Regulator with Enable 5-TO-220 -40 to 125
LP38856S-1.2/NOPB Texas Instruments 3A Fast-Response High-Accuracy LDO Linear Regulator with Enable 5-DDPAK/TO-263 -40 to 125
LP38856 's PackagesLP38856 's pdf datasheet
LP38856T-0.8 TO-220
LP38856T-1.2 TO-220
LP38856S-0.8 TO-263
LP38856S-1.2 TO-263
LP38856SX-0.8 TO-263
LP38856SX-1.2 TO-263




LP38856 Pinout, Pinouts
LP38856 pinout,Pin out
This is one package pinout of LP38856,If you need more pinouts please download LP38856's pdf datasheet.

LP38856 Application circuits
LP38856 circuits
This is one application circuit of LP38856,If you need more circuits,please download LP38856's pdf datasheet.


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