LX8221
TM ®
www.DataSheet4U.com Dual 150mA CMOS Low Dropout Regulator
P RODUCTION D ATA S HEET
DESCRIPTION
KEY FEATU...
LX8221
TM ®
www.DataSheet4U.com Dual 150mA CMOS Low Dropout
Regulator
P RODUCTION D ATA S HEET
DESCRIPTION
KEY FEATURES
WWW . Microsemi . C OM
The LX8221 family of dual output linear
regulators provide for the selection of either fixed or adjustable output voltages, and combine low dropout operation, fast transient performance, tight output voltage accuracy, and ultra-low ground current within a very small package footprint. The PMOS output
transistor allows for an ultra-low dropout characteristic (e.g., typically less than 175mV at 100mA). The individual
regulators can be powered from either separate supply voltages or the same supply voltage between 2.8V to 6V allowing for maximum system flexibility. An optional ceramic or tantalum type capacitor may be connected to each Bypass pin separately to improve performance in critical low-noise applications.
Overall
regulator efficiency has been improved with a minimized operating ground current (typ < 140µA per
regulator). Further, this ground current is virtually eliminated in shutdown mode (typ < 1µA). Other safety features include channel independent Thermal and Short Circuit Current protection. Separate Enable pins allow each
regulator to be switched on and off independently by applying a TTL logic level control signal to the Enable pin further enhancing system level power management. These features combined with a small footprint (i.e., 10-pin MSOP package) make the LX8221 especially useful for battery-operated equipme...