The R5104V Series are CMOS-based system power ICs with a voltage regulator, voltage detector, and watchdog timer integrated in a single chip. The R5104V 's input voltage of Max. 36V (absolute maximum rating: Max. 50V) makes it suitable for use in car applications. The voltage regulator with an external output transistor is capable of outputting approximately 1A, using the PNP transistor of hFE=100 to 300. R5104V monitors the power system of devices equipped with microprocessors and prevents system runaway with a reset signal when a malfunction occurs.
The Ricoh R5104V Series consists of high voltage tolerance CMOS-based microprocessor power management ICs with high accuracy output voltage and detector thresholds. Each IC integrates a voltage regulator, a voltage detector, and a watchdog timer to provide comprehensive power management and system supervision for microprocessors.
These devices are designed to supply minimum 1A current to systems via an external driver transistor. Key features include individually settable output voltages and detector thresholds via laser trimming, configurable watchdog timeout periods using external capacitors, and two distinct power-down versions (A and B) offering different standby modes.
| Output Voltage Range | 3.3V to 5.0V |
|---|---|
| Detector Threshold Voltage Range | 2.8V to 4.0V |
| Maximum Operating Input Voltage | 36V |
| Output Current (Min) | 1A |
| Operating Temperature Range | -40 to +125 °C |
It checks over the microprocessor and generates reset signals intermittently to prevent a whole system from malfunctioning.
The output voltage and detector threshold can be set individually by laser trimming.
Version A turns off the supervisor of clock input for the watchdog timer, while Version B turns off all circuits to realize standby mode.