Product Summary

The AS1117L-33 is a Low Dropout Regulator. The ALPHA Semiconductor AS1117L-33 is a low power positive-voltage regulator designed to meet 800mA output current and comply with SCSI-II specifications with a fixed output voltage of 2.85V. This device is an excellent choice for use in battery-powered applications, as active terminators for the SCSI bus, and portable computers. The AS1117L-33 features very low quiescent current and very low dropout voltage of 1.2V at a full load and lower as output current decreases. AS1117L-33 is available as an adjustable or fixed 2.85V, 3V, 3.3V, and 5V output voltages. The AS1117L-33 is offered in a 3-pin surface mount package SOT-223, TO-252, TO-220, SOT-89 & TO-263. The output capacitor of 10mF or larger is needed for output stability of AS1117L-33 as required by most of the other regulator circuits. Use of ALPHA Semiconductor’s design, processing and testing techniques make our AS1117L-33 superior over similar products. The applications of the AS1117L-33 include SCSI-II Active Terminator, Portable/ Palm Top / Notebook Computers, Battery Chargers, Disk Drives, Portable Consumer Equipment, Portable Instrumentation and SMPS Post-Regulator.

Parametrics

AS1117L-33 absolute maximum ratings: (1)Power Dissipation: Internally Limited ; (2)Input Supply Voltage: -20V to +20V; (3)Lead Temp. (Soldering, 5 Seconds): 260℃ ; (4)ESD Rating: 2KV Min; (5)Storage Temperature Range: -65 to +150℃; (6)Operating Junction Temperature Range: -40℃ to +125℃.

Features

AS1117L-33 features: (1)Guaranteed 800mA Output; (2)Three Terminal Adjustable Or Fixed 1.5V, 2.5V, 2.85V, 3V, 3.3V & 5V; (3)Very Low Quiescent Current ; (4)Low Dropout Voltage Of 1.2 Volts At Full Load; (5)Extremely Tight Load And Line Regulation; (6)Very Low Temperature Coefficient ; (7)Fixed 2.85V Device For SCSI-II Active Terminator; (8)Logic-Controlled Electronic Shutdown; (9)Internal Over current Limiting & Thermal Overload Protection; (10)Surface Mount Package SOT-223, TO-252, TO-220, SOT-89, TO-263, & SO-8.

Diagrams

AS1117L-33 dimension