TK111xxS
VOLTAGE REGULATOR WITH ON/OFF SWITCH
FEATURES
s High Voltage Precision at ± 2.0% or ± 60 mV s Active High On/...
TK111xxS
VOLTAGE REGULATOR WITH ON/OFF SWITCH
FEATURES
s High
Voltage Precision at ± 2.0% or ± 60 mV s Active High On/Off Control s Very Low Dropout
Voltage (85 mV at 30 mA) s Very Low Noise s Miniature Package (SOT-23-5) s Internal Thermal Shutdown s Short Circuit Protection s Excellent Ripple Rejection (70 dB @ 1 kHz) s Reverse Bias Protection
DESCRIPTION
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
The TK111xxS 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 85 mV (typ.) at ...