TK119xx

The TK119xx series are low power, linear regulators with built-in electronic switches. Built-in voltage comparators provide a reset logic "low" level whenever the input or output voltage falls outside internally preset limits. The internal electronic switch can be controlled by CMOS or TLL levels. The device is in the "off" state when the control pin is biased "high".

An internal PNP pass-transistor is used in order to achieve low dropout voltage (typically 200 mV at 50 mA load current). The device has very low quiescent current (130 mA) in the "on" mode with no load and 2 mA with 30 mA load. The quiescent current is typically 4 mA at 60 mA load. The current consumption in the "off" mode is 65 mA.An internal thermal shutdown circuit limits the junction temperature to below 150 oC. The load current is internally monitored and the device will shut down (no load current)in the presence of a short circuit at the output. The output
noise is very low at 100 dB down from V_OUT when an external noise bypass capacitor is used. The TK119xx is available in a miniature SOT-23L surface mount package