AS1117

芯片资料

AS1117

AS1117

800mA Low Dropout Regulator

SCSI-II Active Terminator

FEATURES

Guaranteed 800mA Output Three Terminal Adjustable Or Fixed 1.5V, 2.5V, 3V, 3.3V & 5V Very Low Quiescent Current Low Dropout Voltage Of 1.2 Volts At Full Load Extremely Tight Load And Line Regulation Very Low Temperature Coefficient Logic-Controlled Electronic Shutdown Internal Overcurrent Limiting & Thermal Overload Protection

Surface Mount Package SOT-223, TO-252, TO-220, SOT-89, TO-263, & SO-8

SCSI-II Active Terminator Portable/ Palm Top / Notebook Computers Battery Chargers Disk Drives Portable Consumer Equipment Portable Instrumentation SMPS Post-Regulator APPLICATIONS

PRODUCT DESCRIPTION

The AS1117 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 AS1117 features very low quiescent current and very low dropout voltage of 1.2V at a full load and lower as output current decreases. AS1117 is available as an adjustable or fixed 1.5V, 2.5V, 3.0V, 3.3V, and 5.0V output voltages.

The AS1117 is offered in a 3-pin surface mount package SOT-223, TO-252, TO-220 and TO-263. The output capacitor of 10µF or larger is needed for output stability of AS1117 as required by most of the other regulator circuits.

ORDERING INFORMATION

TO-220 TO-263 SOT-223 PLASTIC TO-252 Oper. Temp.

AS1117

3-PIN 3-PIN 3-PIN SOIC 8 PIN DPAK Range

-40

AS1117

°C to +85°C

AS1117

-40°C to +85°

AS1117

C

X= Output Voltage (X = 1.5V, 2.5V, 3.0V, 3.3V, 5.0, or Blank for Adjustable)

PIN CONNECTIONS

GND

N/C

VOUT

VOUT8-Pin Surface Mount (S) TO-220-3 (U)SOT-223 (M3)TO-263-3 (T)TO-252 (R)123487VINVINVINN/CADJ/GNDVOUTVINAS1117

AS1117

65

Top View

ADJ/GNDVOUTVINTop ViewADJ/GNDVOUTVINADJ/GNDVOUTVINTop ViewFront View

Front View

Rev. 10/6/00

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