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NCP631_06 Datasheet, PDF (1/9 Pages) ON Semiconductor – 3.0 A Linear Voltage Regulator with Soft−Start | |||
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NCP631
3.0 A Linear Voltage
Regulator with SoftâStart
The NCP631 is a low dropout positive voltage regulator that is
capable of providing a guaranteed output current of 3.0 A with a
maximum dropout voltage of 1.25 V at 3.0 A over temperature. The
NCP631 is currently offered as a fixed voltage version at 3.47 V. On
chip trimming adjusts the reference/output voltage to within "1.5%
accuracy. The SoftâStart function allows control of start up times. This
prevents current spikes at start up due to output capacitor inârush
current. Internal protection features consist of output foldback current
limiting, and thermal shutdown. The NCP631 is available in D2PAK
package.
Features
⢠Output Current of 3.0 A
⢠1.25 V Maximum Dropout Voltage at 3.0 A Over Temperature
⢠Voltage on Shutdown Pin is TTL compatible
⢠Reference/Output Voltage Trimmed to "1.5 %
⢠Current Limit Protection
⢠Thermal Shutdown Protection
⢠0°C to 125°C Junction Temperature Range
⢠PbâFree Packages are Available
Applications
⢠Microprocessor Power Supplies
⢠SMPS Post Regulation
⢠Battery Chargers
⢠DSP Power Supplies
INPUT
Cin
2
4
1 NCP631 5
Cout
Cs
3
Shutdown
Vout
3.47
Figure 1. Typical Application Circuit
http://onsemi.com
1
5
D2PAK
D2T SUFFIX
CASE 936A
Tab = Ground
Pin 1. Shutdown
2. Vin
3. Ground
4. Vout
5. SoftâStart
MARKING DIAGRAM
NC
P631GD2T
AWLYWWG
NCP631GD2T = Device Code
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
G = PbâFree Package
ORDERING INFORMATION
Device
Package
Shippingâ
NCP631GD2TR4
D2PAK 800/Tape & Reel
NCP631GD2TR4G D2PAK 800/Tape & Reel
(PbâFree)
NCP631GD2T
D2PAK 50 Units / Tube
NCP631GD2TG
D2PAK 50 Units / Tube
(PbâFree)
â For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2006
1
April, 2006 â Rev. 5
Publication Order Number:
NCP631/D
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