NCP551
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150 mA CMOS Low Iq
Low-Dropout Voltage
Regulator
The NCP551 series of fixed output low dropout linear regulators are
designed for handheld communication equipment and portable battery
powered applications which require low quiescent. The NCP551
series features an ultra鈥搇ow quiescent current of 4.0
碌A(chǔ).
Each device
contains a voltage reference unit, an error amplifier, a PMOS power
transistor, resistors for setting output voltage, current limit, and
temperature limit protection circuits.
The NCP551 has been designed to be used with low cost ceramic
capacitors and requires a minimum output capacitor of 0.1
碌F.
The
device is housed in the micro鈥搈iniature TSOP鈥? surface mount
package. Standard voltage versions are 1.5, 1.8, 2.5, 2.7, 2.8, 3.0, 3.3,
and 5.0 V. Other voltages are available in 100 mV steps.
Features
http://onsemi.com
5
1
TSOP鈥?
SN SUFFIX
CASE 483
PIN CONNECTIONS AND
MARKING DIAGRAM
V
in
Gnd
Enable
1
xxxYW
2
3
5
V
out
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Low Quiescent Current of 4.0
碌A(chǔ)
Typical
Excellent Line and Load Regulation
Maximum Operating Voltage of 12 V
Low Output Voltage Option
High Accuracy Output Voltage of 2.0%
Industrial Temperature Range of 鈥?0擄C to 85擄C
4
N/C
xxx = Version
Y = Year
W = Work Week
(Top View)
Typical Applications
鈥?/div>
Battery Powered Instruments
鈥?/div>
Hand鈥揌eld Instruments
鈥?/div>
Camcorders and Cameras
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
V
in
1
Thermal
Shutdown
Driver w/
Current
Limit
5
V
out
Enable
ON
OFF
3
Gnd
2
Figure 1. Representative Block Diagram
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
漏
Semiconductor Components Industries, LLC, 2001
1
June, 2001 鈥?Rev. 0
Publication Order Number:
NCP551/D
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