© Semiconductor Components Industries, LLC, 2011
February, 2011 − Rev. 1
1 Publication Order Number:
NCP4640/D
NCP4640
50 mA, Wide Input Range,
Voltage Regulator
The NCP4640 is a CMOS 50 mA linear voltage regulator with high
input voltage and ultra−low supply current. It incorporates multiple
protection features such as peak current limit, short circuit current
limit and thermal shutdown to ensure a very robust device.
A high maximum input voltage tolerance of 50 V and a wide
temperature range make the NCP4640 suitable for a variety of
demanding applications.
Features
• Operating Input Voltage Range: 4 V to 36 V
• Output Voltage Range: 2.0 to 12.0 V (0.1 steps)
• ±2% Output Voltage Accuracy
• Output Current: min 50 mA (V
IN
= 8 V, V
OUT
= 5 V)
• Line Regulation: 0.05%/V
• Peak Current Limit Circuit
• Short Current Limit Circuit
• Thermal Shutdown Circuit
• Available in SOT−89−5 and SOIC6−TL Package
• These are Pb−Free Devices
Typical Applications
• Power source for home appliances
• Power source for car audio equipment, navigation system
• Power source for notebooks, digital TVs, cordless phones and private
LAN systems
• Power source for office equipment machines such as copiers,
printers, facsimiles, scanners, projectors, etc.
VIN VOUT
CE
GND
C1
C2
100n
100n
VIN VOUT
NCP4640x
Figure 1. Typical Application Schematic
http://onsemi.com
See detailed ordering and shipping information in the package
dimensions section on page 15 of this data sheet.
ORDERING INFORMATION
SOIC6−TL
CASE 751BR
MARKING
DIAGRAMS
(Note: Microdot may be in either location)
SOT−89 5
CASE 528AB
XXX
XMM
1
1
XXX
XMM
XXXX = Specific Device Code
MM = Date Code
