TK112xxA
VOLTAGE REGULATOR WITH ON/OFF SWITCH
FEATURES
s High Voltage Precision at ± 2.4% s Active High On/Off Control...
TK112xxA
VOLTAGE REGULATOR WITH ON/OFF SWITCH
FEATURES
s High
Voltage Precision at ± 2.4% s Active High On/Off Control s Very Low Dropout
Voltage 80 mV at 30 mA s Very Low Noise s Very Small SOT-23L or SOT-89-5 Surface Mount
Packages s Internal Thermal Shutdown
s Short Circuit Protection
APPLICATIONS
s Battery Powered Systems s Cellular Telephones s Pagers s Personal Communications Equipment s Portable Instrumentation s Portable Consumer Equipment s Radio Control Systems s Toys s Low
Voltage Systems
DESCRIPTION
The TK112xxA is a low dropout linear regulator with a builtin electronic switch. The internal switch can be controlled by TTL or
CMOS logic levels. The device is in the ON state when the control pin is pulled to a logic high level. An external capacitor can be connected to the noise bypass pin to lower the output noise level to 30 µVrms.
An internal PNP pass transistor is used to achieve a low dropout
voltage of 70 mV (typ.) at 30 mA load current. The TK112xxA has a very l...
