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PDF A1117 Data sheet ( Hoja de datos )
| Número de pieza | A1117 | |
| Descripción | 1A LOW-DROPOUT POSITIVE VOLTAGE REGULATOR THERMAL PROTECTION AND 1.4A CURRENT LIMIT | |
| Fabricantes | AiT Semiconductor | |
| Logotipo |  |
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AiT Semiconductor Inc.
www.ait-ic.com
A1117
1A LOW-DROPOUT POSITIVE VOLTAGE REGULATOR
THERMAL PROTECTION AND 1.4A CURRENT LIMIT
DESCRIPTION
The A1117 is designed to provide 1A for requiring
high efficiency applications.
FEATURES
Output Current of 1A Maximum
Three-Terminal Adjustable or Fixed Outputs
The A1117 series of positive fixed voltage (VOUT =
1.8V, 2.5V, 2.8V, 3.3V, 5V) and adjustable version,
which can provide an output voltage from 1.25V to
13.8V with only two external resistors.
Maximum Input Voltage: 15V
Fast Transient Response
Current Limit, Safe Operating and Thermal
Shutdown Protection
The A1117 offers current limiting and thermal
protection to assure the stability of chip and power
system. And the on chip trimming technique to
guarantee output voltage accuracy within ±2%.
The A1117 is available in SOT-223 and TO-252
packages.
Line Regulation: 0.2%
Load Regulation: 0.4%
Environment Temperature: -50oC~+140oC
Available in SOT-223 and TO-252 Package.
APPLICATION
High Efficiency Linear Regulators
Post Regulator for Switching DC/DC Converter
Power Management for M/B and Graphic Card
TYPICAL APPLICATION
2.85V Model for SCSI-2 Active Termination
Battery Charger
LCD Monitor and LCD TV
DVD Decode Board
ADSL Modem
ORDERING INFORMATION
Adjustable Output Version
VOUT=VREF(1+R2/R1)+IADJ*R2
The output of A1117-ADJ provides any output voltage between
1.25V~13.8V can be available by choosing two external resistors.
Fixed Output Version
Package Type
Part Number
A1117NR-XX
SOT-223
TO-252
N A1117NVR-XX
A1117NR-ADJ
A1117NVR-ADJ
A1117DR-XX
A1117DVR-XX
D A1117DR-ADJ
A1117DVR-ADJ
XX: Output Voltage, 33=3.3V, 50=5V,
NOTE
ADJ: Adjustable
R: Tape & Reel
V: GREEN PACKAGE
AiT provides all Pb free products
Suffix “ V” means Green Package
REV1.2 - JAN 2006 RELEASED – SEP 2008 REVISED -
-1-
1 page  
AiT Semiconductor Inc.
www.ait-ic.com
7.Load Transient Response
Load Current Change from 2mA to 500mA
A1117
1A LOW-DROPOUT POSITIVE VOLTAGE REGULATOR
THERMAL PROTECTION AND 1.4A CURRENT LIMIT
BLOCK DIAGRAM
REV1.2 - JAN 2006 RELEASED – SEP 2008 REVISED -
-5-
5 Page 
AiT Semiconductor Inc.
www.ait-ic.com
IMPORTANT NOTICE
A1117
1A LOW-DROPOUT POSITIVE VOLTAGE REGULATOR
THERMAL PROTECTION AND 1.4A CURRENT LIMIT
AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to
discontinue any integrated circuit product or service without notice, and advises its customers to obtain the
latest version of relevant information to verify, before placing orders, that the information being relied on is
current.
AiT Semiconductor Inc.'s integrated circuit products are not designed, intended, authorized, or warranted to
be suitable for use in life support applications, devices or systems or other critical applications. Use of AiT
products in such applications is understood to be fully at the risk of the customer. As used herein may
involve potential risks of death, personal injury, or servere property, or environmental damage. In order to
minimize risks associated with the customer's applications, the customer should provide adequate design and
operating safeguards.
AiT Semiconductor Inc. assumes to no liability to customer product design or application support. AiT
warrants the performance of its products of the specifications applicable at the time of sale.
REV1.2 - JAN 2006 RELEASED – SEP 2008 REVISED -
- 11 -
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet A1117.PDF ] | |
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