DS1233M-55+

The DS1233M-55+ is a high-performance and moderate-cost power management chip, designed for use in the embedded system market. It belongs to a class of integrated circuits called Power Management ICs (PMICs)—specifically, it is a supervisor. It offers all the protections necessary for the efficient, reliable operation of a wide range of electronic devices.

The DS1233M-55+ offers several features that are usually found in separate integrated circuits. It integrates a Reset/WatchDog Timer, which is essentially a safety mechanism to ensure the device will remain in an expected state when there is an unexpected condition. The reset is triggered when it senses a voltage level that is below the safe operating range; the watchdog timer can interface with a processor to reset the system when an unexpected condition occurs. When integrated with other chips, the watchdog timer can ensure that the system does not become unresponsive due to some unexpected event. Additionally, the chip offers over-voltage and under-voltage protection, as well as over-temperature and over-current shutoff.

The DS1233M-55+ also includes power sequencing, which ensures that the system remains in the expected state even when there is a sudden loss of power, or when the system is suddenly powered up. The power sequencing integrates both power-on-reset and power-on-startup functions, allowing the system to remain in a known state upon powering up or when the power supply voltage varies over a wide range. It also includes a TPS51539 auxiliary power-on detect circuit, allowing it to detect the presence of an external power supply.

The DS1233M-55+ also includes a SRAM Battery Backup feature, which allows the system to remain in a known state even when there is a sudden loss of power. The SRAM stores the system state, and this information can be used to power up and resume system operation without interruption. This is especially useful for applications that require fast system recovery upon power failure.

In addition, the DS1233M-55+ includes an I2C/SMBus interface, allowing it to be controlled either directly or remotely. This makes it especially suitable for systems that require flexible control and monitoring. It also offers an event system, for which the user can configure and trigger events in order to monitor system performance or initiate any action needed.

The DS1233M-55+ provides all the features necessary for reliable and efficient operation of embedded systems, while also offering a moderate cost. It’s an excellent choice for customers looking for a power management chip that can provide reliable performance even under harsh conditions.