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© Semiconductor Components Industries, LLC, 2009
November, 2009 − Rev. 21
1 Publication Order Number:
NCP1117/D
NCP1117, NCV1117
1.0 A Low-Dropout Positive
Fixed and Adjustable
Voltage Regulators
The NCP1117 series are low dropout positive voltage regulators that
are capable of providing an output current that is in excess of 1.0 A
with a maximum dropout voltage of 1.2 V at 800 mA over
temperature. This series contains nine fixed output voltages of 1.5 V,
1.8 V, 1.9 V, 2.0 V, 2.5 V, 2.85 V, 3.3 V, 5.0 V, and 12 V that have no
minimum load requirement to maintain regulation. Also included is an
adjustable output version that can be programmed from 1.25 V to
18.8 V with two external resistors. On chip trimming adjusts the
reference/output voltage to within ±1.0% accuracy. Internal protection
features consist of output current limiting, safe operating area
compensation, and thermal shutdown. The NCP1117 series can
operate with up to 20 V input. Devices are available in SOT−223 and
DPAK packages.
Features
• Output Current in Excess of 1.0 A
• 1.2 V Maximum Dropout Voltage at 800 mA Over Temperature
• Fixed Output Voltages of 1.5 V, 1.8 V, 1.9 V, 2.0 V, 2.5 V, 2.85 V,
3.3 V, 5.0 V, and 12 V
• Adjustable Output Voltage Option
• No Minimum Load Requirement for Fixed Voltage Output Devices
• Reference/Output Voltage Trimmed to ±1.0%
• Current Limit, Safe Operating and Thermal Shutdown Protection
• Operation to 20 V Input
• NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
• Pb−Free Packages are Available
Applications
• Consumer and Industrial Equipment Point of Regulation
• Active SCSI Termination for 2.85 V Version
• Switching Power Supply Post Regulation
• Hard Drive Controllers
• Battery Chargers
10
mF
1
2
Output
10
mF
3
Input
NCP1117
XTXX
++
Figure 1. Fixed
Output Regulator
10
mF
1
2
Output
10
mF
3
Input
NCP1117
XTA
++
Figure 2. Adjustable
Output Regulator
22
mF
1
2
10
mF
3
NCP1117
XT285
++
110 W
110 W
110 W
110 W
4.75 V
to
5.25 V
+
18 to 27
Lines
Figure 3. Active SCSI Bus Terminator
TYPICAL APPLICATIONS
SOT−223
ST SUFFIX
CASE 318H
1
3
DPAK
DT SUFFIX
CASE 369C
Pin: 1. Adjust/Ground
2. Output
3. Input
1
3
Heatsink tab is connected to Pin 2.
See detailed ordering and shipping information in the package
dimensions section on pages 12 and 12 of this data sheet.
ORDERING INFORMATION
See general marking information in the device marking
section on page 15 of this data sheet.
DEVICE MARKING INFORMATION
1 23
1
2
3
Tab
Tab
(Top View)
(Top View)
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Verzeichnis
- ・ Abmessungen des Paketumrisses on Seite 17 Seite 18
- ・ Paket-Footprint-Pad-Layout on Seite 17 Seite 18
- ・ Teilenummerierungssystem on Seite 1 Seite 12 Seite 13 Seite 14 Seite 18
- ・ Markierungsinformationen on Seite 1 Seite 15 Seite 16
- ・ Typisches Anwendungsschaltbild on Seite 1
- ・ Technische Daten on Seite 12 Seite 13 Seite 14
- ・ Anwendungsbereich on Seite 1 Seite 9
- ・ Elektrische Spezifikation on Seite 3 Seite 4
