150mA Low Dropout
Voltage Regulators
CORPORATION
CLM2950 / CLM2951
FEATURES
PRODUCT DESCRIPTION
Calogic’s CLM2950 and CLM2951 are low power voltage
regulators. These devices are an excellent choice for use in
battery-powered applications such as cordless telephones,
radio control systems, and portable computers. The CLM2950
and CLM2951 features very low quiescent current and very
low dropout voltage (Typ. 50mV at light load and 380mV at
100mA). This includes a tight initial tolerance of 0.5% typ.,
extremely good load and line regulation of 0.05% typ. and
very low output temperature coefficient, making the
CLM2950/CLM2951 useful as a low-power voltage reference.
Other key additional features of this device includes higher
output current (150mA), positive transient protection up to 60V
(Load dump), and the ability to survive an unregulated input
voltage transient of -20V below ground (reverse battery).
The error flag output feature is used as power-on reset for
warning of a low output voltage, due to falling voltage input of
batteries. Another feature is the logic-compatible shutdown
input which enables the regulator to be switched on and off.
The CLM2950 is offered in a 3-pin TO-92 package compatible
with other 5 volt regulators. The CLM2951 is also available in
8-pin plastic and SO-8.
The regulator output voltage may be pin-strapped for a 5V,
3.3V and 3.0 volts or programmed from 1.24 volt to 29 volts
with an external pair of resistors.
ORDERING INFORMATION
PART
CLM2950ACN-X
CLM2950CN-X
CLM2951ACP-X
CLM2951CP-X
CLM2951ACS-X
CLM2951CS-X
PACKAGE
TEMPERATURE RANGE
IND.
IND.
IND.
IND.
IND.
IND.
TO-92 (3-Pin)
TO-92 (3-Pin)
Plastic DIP (8-Pin)
Plastic DIP (8-Pin)
Plastic SOIC (8-Pin)
Plastic SOIC (8-Pin)
•
5V, 3.3V, and 3.0V Versions at 150mA Output
•
Very Low Quiescent Current
•
Low Dropout Voltage and Line Regulation
•
Extremely Tight Load
•
Very Low Temperature Coefficient
•
Needs Only 1µF for Stability
•
Current and Thermal Limiting
•
Unregulated DC Input can Withstand -20V Reverse
Battery and +60V Positive Transients
•
Similar Replacement for LP2950/LP2951 Sockets
•
•
•
CLM2951 Versions Only
Error Flag Warns of Output Dropout
Logic-Controlled Electronic Shutdown
Output Programmable from 1.24 to 29V
APPLICATIONS
•
Battery Powered Systems
•
Cordless Telephones
•
Radio Control Systems
•
Portable / Palm Top / Notebook Computers
•
Portable Consumer Equipment
•
Portable Instrumentation
•
Avionics
•
Automotive Electronics
•
SMPS Post-Regulator
•
Voltage Reference
X = 3.0V, 3.3V or 5.0V
PIN CONNECTIONS
8-PIN SURFACE MOUNT
OUTPUT
SENSE
SHUTDOWN
GROUND
1
2
CLM2951
3
4
TOP VIEW
6
5
5V OR 3.3V TAP
ERROR
8
7
INPUT
FEEDBACK
TO-92
1
2
3
1. OUTPUT
2. GROUND
3. INPUT
BOTTOM VIEW
1D-46
1D-47
CALOGIC CORPORATION,
237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CALOGIC [ CALOGIC, LLC ]
