The R5101G series are microprocessor power management ICs with high accuracy output
voltage and detector threshold and with ultra low supply current by CMOS process. Each of these ICs consists
of a voltage regulator, a voltage detector and a watchdog timer. Thus, the R5101G Series have the function
of a power management for microprocessor, a monitor of the voltage of a power source and a microprocessor supervisor.
The built-in voltage regulator with an internal driver transistor can supply typically 50mA current to
a system when the voltage difference between input and output is 2V. Therefore these ICs are very suitable
for various power supply systems for microprocessors. The output voltage is monitored by the voltage detector
which is built-in these ICs.
The built-in voltage detector has an output delay function and the delay time can be set by an external
capacitor(CD).
The output voltage and the detector threshold voltage can be set individually for each IC by laser trimming.
Furthermore, when a microprocessor works incorrectly, the watchdog timer which checks over microprocessor
generates reset signals intermittently to prevent a whole system from being malfunction.
The timeout periods for watchdog and reset can also be set individually by an external capacitor(CTW).
Built-in
a watchdog timer 
R5101G
Series
