AKM Semiconductor, Inc.'s TK717xxS is a low saturation voltage, low quiescent current LDO. The PNP power transistor is built into the device, providing an extra level of integration. The typical I/O voltage difference is 163 mV when a current of 200mA is supplied to the system. Because of the low voltage drop, the voltage source can be effectively used; this makes it very suitable for battery powered equipment.
The on/off function is built into the IC. During standby mode, the current becomes very small (pA level). In addition, the output short-circuit function works at off times. It is a unique characteristic by which the residual charge of the output side capacitor is rapidly discharged. The output voltage is available from 1.5 to 10.0 V in 0.1 V steps. The output voltage is trimmed with high accuracy, allowing the optimum voltage to be selected for the equipment.
Built-in shunt circuit of output to GND
High precision output voltage (±50 mV or ±1.5 )
Good ripple rejection ratio (80 dB at 1 kHz)
Built-in short circuit protection and thermal shutdown