NCP500
150 mA CMOS Low Noise
Low−Dropout Voltage
Regulator
The NCP500 series of fixed output low dropout linear regulators are
designed for portable battery powered applications which require low
noise operation, fast enable response time, and low dropout. The
device achieves its low noise performance without the need of an
external noise bypass capacitor. Each device contains a voltage
reference unit, an error amplifier, a PMOS power transistor, and
resistors for setting output voltage, and current limit and temperature
limit protection circuits.
http://onsemi.com
TSOP−5
SN SUFFIX
CASE 483
5
1
The NCP500 has been designed to be used with low cost ceramic
capacitors and requires a minimum output capacitor of 1.0 mF.
QFN 2x2
SQL SUFFIX
CASE 488
Features
1
• Ultra−Low Dropout Voltage of 170 mV at 150 mA
• Fast Enable Turn−On Time of 20 msec
• Wide Operating Voltage Range of 1.8 V to 6.0 V
• Excellent Line and Load Regulation
• High Accuracy Output Voltage of 2.5%
• Enable Can Be Driven Directly by 1.0 V Logic
6
PIN CONNECTIONS AND
MARKING DIAGRAMS
TSOP−5
• Typical RMS Noise Voltage 50 mV with No Bypass Capacitor
(BW = 10 Hz to 100 kHz)
1
2
V
5
4
V
in
out
• Very Small QFN 2x2 Package
• Pb−Free Package May be Available.* The G−Suffix Denotes a
Pb−Free Lead Finish
GND
Enable
3
N/C
Typical Applications
(Top View)
• Noise Sensitive Circuits − VCO’s, RF Stages, etc.
• SMPS Post−Regulation
QFN 2x2
• Hand−Held Instrumentation
• Camcorders and Cameras
6
5
4
Enable
GND
N/C
1
2
3
xxM
GND
V
in
V
out
(Top View)
V
in
V
out
1 (3)
5 (4)
xxx, xx = Version
Y
W
M
= Year
= Work Week
= Date Code
Driver w/
Current
Limit
Thermal
Shutdown
Enable
3 (1)
ORDERING INFORMATION
ON
See detailed ordering and shipping information in the package
dimensions section on page 17 of this data sheet.
OFF
2 (2, 5)
GND
*For additional information on our Pb−Free strategy
and soldering details, please download the ON
Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
NOTE: Pin numbers in parenthesis indicate QFN package.
Figure 1. Simplified Block Diagram
Semiconductor Components Industries, LLC, 2004
1
Publication Order Number:
January, 2004 − Rev. 16
NCP500/D