NCP1117_07 Datasheet, PDF (1/17 Pages) ON Semiconductor – 1.0 A Low−Dropout Positive Fixed and Adjustable Voltage Regulators

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.
http://onsemi.com
1
3
Tab
123
(Top View)
SOT−223
ST SUFFIX
CASE 318H
Pin: 1. Adjust/Ground
2. Output
3. Input
Heatsink tab is connected to Pin 2.
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
1
3
Tab
123
(Top View)
DPAK
DT SUFFIX
CASE 369C
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
• 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
110 W
Input _{3 NCP1117 2} Output
XTXX
10 ⁺
+ ₁₀
mF
1
mF
Figure 1. Fixed
Output Regulator
Input
10
mF
3 _NCP1117 2 ^Output
XTA
+
+ ₁₀
1
mF
3 _NCP1117 2
110 W
10 ⁺
mF
XT285
1
+ _{22 110 W}
mF
4.75 V ₊
to
5.25 V
110 W
18 to 27
Lines
Figure 2. Adjustable
Output Regulator
Figure 3. Active SCSI Bus Terminator
© Semiconductor Components Industries, LLC, 2007
1
January, 2007 − Rev. 17
Publication Order Number:
NCP1117/D