23772

· High Voltage Precision at ± 2.0%
· Active High On/Off Control
· Very Low Dropout Voltage 80 mV at 30 mA
· Very Low Noise 
· Very Small SOT-23L or SOT-89 Surface Mount Packages
· Internal Thermal Shutdown
· Short Circuit Protection

· Battery Powered Systems
· Cellular Telephones
· Pagers
· Personal Communications Equipment
· Portable Instrumentation
· Portable Consumer Equipment
· Radio Control Systems
· Toys
· Low Voltage Systems

Supply Voltage .........................................................16 V
Power Dissipation SOT-23L (Note1) .................. 600 mW
Power Dissipation SOT-89 (Note1) .................... 900 mW
Reverse Bias ........................................................... 10 V
Storage Temperature Range ................... -55 to +150
Operating Temperature Range ...................-30 to +80
Operating Voltage Range........................... 1.8 to 14.5 V
Junction Temperature .......................................... 150

The TK112xxB 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 Vrms.

The TK112xxB is used to achieve a low dropout voltage of 80 mV (typ.) at 30 mA load current. The TK112xxB has a very low quiescent current of 170 A at no load and 1 mA with a 30 mA load. The standby current is typically 100 nA. The internal thermal shut down circuitry limits the junction temperature to below 150 °C. The load current is internally monitored and the device will shut down in the presence of a short circuit or overcurrent condition at the output.