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
http://onsemi.com
Tab
1
3
123
(Top View)
Pin: 1. Adjust/Ground
2. Output
3. Input
Heatsink tab is connected to Pin 2.
Tab
DPAK
DT SUFFIX
CASE 369C
SOT−223
ST SUFFIX
CASE 318H
•
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
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
TYPICAL APPLICATIONS
1
3
2
1 3
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on pages 11 and 12 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 14 of this data sheet.
Applications
110
W
Input
Input
10
mF
3
+
3
+
NCP1117
XTXX
1
2 Output
+
10
10
mF
NCP1117
XTA
1
2 Output
+
10
3
10
mF
4.75 V
to
5.25 V
+
+
NCP1117
XT285
1
2
+
22
110
W
mF
110
W
18 to 27
Lines
mF
mF
110
W
Figure 1. Fixed
Output Regulator
©
Semiconductor Components Industries, LLC, 2007
Figure 2. Adjustable
Output Regulator
1
Figure 3. Active SCSI Bus Terminator
Publication Order Number:
NCP1117/D
January, 2007 − Rev. 17
ONSEMI [ ON SEMICONDUCTOR ]
