TK11147M

 High Voltage Precision at ± 2.0% or ± 60 mV
 Active High On/Off Control
 Very Low Dropout Voltage (85 mV at 30 mA)
 Very Low Noise
Miniature Package (SOT-23L-6)
 Internal Thermal Shutdown
 Short Circuit Protection
Excellent Ripple Rejection (70 dB @ 1 kHz)
 Reverse Bias Protection

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

Supply Voltage ......................................................... 16 V
Noise Bypass Terminal Voltage .................................. 5 V
Power Dissipation (Note 1) ................................ 600 mW
Reverse Bias ............................................................ 10 V
Storage Temperature Range ................... -55 to +150 °C
Operating Temperature Range ...................-30 to +80 °C
Operating Voltage Range............................... 1.8 to 12 V
Junction Temperature ........................................... 150 °C
Lead Soldering Temperature (10 s) ...................... 235 °C

The TK111xxM 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 mVrms.

An internal PNP pass transistor TK111xxM is used to achieve a low dropout voltage of 85 mV (typ.) at 30 mA load current. The TK111xxM has a very low quiescent current of 140 mA (typ.) at no load . The standby current is 100 nA maximum. The internal thermal shutdown 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.

The TK111xxM is available in a miniature SOT-23L-6surface mount package.