www.DataSheet4U.com
LP38853 3A Fast-Response High-Accuracy LDO Linear Regulator with Soft-Start
December 2006
LP38853...
www.DataSheet4U.com
LP38853 3A Fast-Response High-Accuracy LDO Linear Regulator with Soft-Start
December 2006
LP38853 3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-Start
General Description
The LP38853-ADJ is a high current, fast response regulator which can maintain output
voltage regulation with extremely low input to output
voltage drop. Fabricated on a
CMOS process, the device operates from two input
voltages: VBIAS provides
voltage to drive the gate of the N-MOS power transistor, while VIN is the input
voltage which 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 part is available in PSOP 8–pin, TO-220 7–pin, and TO-263 7-pin packages. Dropout
Voltage: 240 mV (typical) at 3A load current. Low Ground Pin Current: 10 mA (typical) at 3A load current. Soft-Start: Programmable Soft-Start time. Precision ADJ
Voltage: ±1.5% for TJ = 25°C, and ±2.0% for 0°C ≤ TJ ≤ +125°C, across all line and load conditions
Features
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Adjustable VOUT range of 0.80V ...