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PDF AS1117 Data sheet ( Hoja de datos )
| Número de pieza | AS1117 | |
| Descripción | 800mA Low Dropout Regulator SCSI-II Active Terminator | |
| Fabricantes | ETC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AS1117 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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α
ALPHA
SEMICONDUCTOR
Excellence in Analog Power Products
AS1117
800mA Low Dropout Regulator
SCSI-II Active Terminator
FEATURES
• Guaranteed 800mA Output
• Three Terminal Adjustable Or Fixed 1.5V, 2.5V, 2.85V, 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
• Fixed 2.85V Device For SCSI-II Active Terminator
• 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
APPLICATIONS
• SCSI-II Active Terminator
• Portable/ Palm Top / Notebook Computers
• Battery Chargers
• Disk Drives
• Portable Consumer Equipment
• Portable Instrumentation
• SMPS Post-Regulator
PRODUCT DESCRIPTION
The ALPHA Semiconductor 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
2.85V, 3V, 3.3V, and 5V output voltages.
The AS1117 is offered in a 3-pin surface mount package SOT-223, TO-252, TO-220, SOT-89 & 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. Use of ALPHA
Semiconductor’s design, processing and testing techniques make our AS1117 superior over similar products.
ORDERING INFORMATION
TO-220
3-PIN
AS1117U
TO-263
3-PIN
AS1117T
SOT-223
3-PIN
AS1117M3
PLASTIC
SOIC 8 PIN
AS1117S
SOT-89
3-PIN
AS1117M1
AS1117U-X
AS1117T-X AS1117M3-X AS1117S-X AS1117M1-X
X= Output Voltage (X = 1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 5.0, or Blank for Adjustable)
PIN CONNECTIONS
TO-252
DPAK
AS1117R
AS1117R-X
Oper. Temp.
Range
-40°C to +85°C
-40°C to +85°C
8-Pin Surface Mount (S)
TO-220-3 (U)
SOT-89 (M1)
SOT-223 (M3)
TO-263-3 (T)
TO-252 (R)
GND
N/C
VOUT
VOUT
18
27
ALPHA
3 AS1117 6
45
Top View
VIN ALPHA
VIN ALPHA
AS1117
123
V IN
AS1117
123
N/C ADJ/GND VOUT VIN
Top View
ADJ/GND
VOUT
V
IN
Front View
ALPHA
AS1117
1 23
ADJ/GND VOUT VIN
Top View
ALPHA
AS1117
123
ADJ/GND VOUT VIN
Top View
ALPHA
AS1117
1 23
ADJ/GND VOUT VIN
Front View
Alpha Semiconductor Inc. 1031 Serpentine Lane. Pleasanton, CA 94568 Tel: (925) 417-1391 Fax: (925) 417-1390
Rev. 9/14/99
1 page  
PACKAGE DRAWING
TO-263-3L (T)
0.405 ± 0.005
(10.287 ± 0.127)
0.055 (1.397)
0.356 ± 0.005
(9.042 ± 0.127)
0.600 +- 0.025
(15.24 ± 0.635)
0.103 BSC
(2.616)
0.050 (1.270)
0.032 +- 0.001
(0.813 +- 0.025)
AS1117
0.176± 0.005 (4.470 ± 0.127)
0.050 ± 0.002 (1.270 ± 0.051)
0° 8°
0.015 +- 0.003
(0.381 +- 0.074)
0.100 ± 0.010
(2.540 ± 0.254)
Alpha Semiconductor Inc. 1031 Serpentine Lane. Pleasanton, CA 94568 Tel: (925) 417-1391 Fax: (925) 417-1390
Rev. 9/14/99
5 Page 
AS1117
ADVANCE INFORMATION- These data sheets contain descriptions of products that are in development. The specifications are based on the engineering calculations,
computer simulations and/ or initial prototype evaluation.
PRELIMINARY INFORMATION- These data sheets contain minimum and maximum specifications that are based on the initial device characterizations. These limits
are subject to change upon the completion of the full characterization over the specified temperature and supply voltage ranges.
The information provided here is believed to be reliable and accurate, however ALPHA assumes no responsibility for its use. ALPHA makes no guarantee for any errors that
appear in this document. ‘Typical’ parameters can and do vary in different applications. All operating parameters, including ‘Typical’ must be validated for each custormer
application by customer’s technical experts. Specifications are subject to change without notice, contact ALPHA in order to obtain the latest version of the device
specification sheet before using any ALPHA devices. ALPHA is not responsible for any defects that occur in equipment using any ALPHA devices. ALPHA makes no
representation that the circuit descriptions herein will not infringe upon existing patent rights.
ALPHA Semiconductor, Inc.
1031 Serpentine Lane
Pleasanton, CA 94566 USA
Tel: (925) 417-1391
Fax: (925) 417-1390
e-mail: [email protected]
web: www.alpha-semi.com
ALPHA Semiconductor-Taiwan
12F, No. 171, Sun Teh Road
Taipei, Taiwan
Tel: 886-2-27281190 Fax: 886-2-27591822
e-mail: [email protected]
LIFE SUPPORT APPLICATION POLICY: ALPHA Semiconductor products are not authorized for use as critical components in life support devices or systems, nuclear
power, aircraft, or space equipment without express written approval from the president of ALPHA Semiconductor.
Alpha Semiconductor Inc. 1031 Serpentine Lane. Pleasanton, CA 94568 Tel: (925) 417-1391 Fax: (925) 417-1390
Rev. 9/14/99
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AS1117.PDF ] | |
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