DS1831ES

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Power management integrated circuits (PMICs) or supervisors can be complex devices that manage multiple power supplies with varying power-up and power-down sequences and high current outputs. The Dallas Semiconductor DS1831ES is one example of a supervisor IC capable of reliably executing power-up and power-down tasks required in applications such as CPUs, ASICs, and FPGAs.

The DS1831ES is a 5-volt input, 3.3-volt output low-dropout (LDO) linear regulator that provides up to 300 mA of steady current. It integrates a push-button reset circuit, power-on-reset (POR) circuit, microprocessor supervisor, supply counter, clock driver, oscillator, and a Gray code address bus. The clock driver and oscillator can be programmed to operate either at 100 kHz or 200 kHz. The microprocessor supervisor includes overvoltage, undervoltage, and timeout protections.

The DS1831ES can support an alternative reset mechanism based on a programming of voltage levels and reset push button. This can be used to solve the issue of reset being de-asserted before the system clock and supplies reach their proper levels. The DS1831ES also supports an alternative reset request input, which can be used to force the IC to reset from an external source and then proceed to initiate a power-on reset.

For maximum design flexibility, the DS1831ES has a Gray code address bus to configure the voltage levels, reset and reset time, timeouts, and reset request input. This also allows the inclusion of multiple DS1831ES ICs in larger systems. The DS1831ES can also be combined with other Dallas Semiconductor voltage monitoring supervisor ICs to provide more sophisticated power-up and power-down tasks required in some applications.

The DS1831ES is designed for applications where reliable power-up and power-down mechanisms must be executed all the time. It is particularly useful in applications such as CPUs, ASICs, FPGAs, and other embedded systems that use multiple power supplies. It is typically used in three-terminal voltage regulators, as it requires only a common ground for operation. The DS1831ES can be combined with other Dallas Semiconductor supervisors to provide flexible power-on and power-down sequences, making it an excellent choice for a variety of applications.

The main purpose of the DS1831ES is to ensure that power-up and power-down sequences are properly executed. It does this by using aGray code address bus which allows the user to configure various parameters related to the power-up and power-downsequences. It also has a reset push-button input and reset request input which can be used to start and stop a reset sequence. The DS1831ES also has multiple protection features, including overvoltage, undervoltage, timeout, and other protections.

The DS1831ES is a complex device that can handle multiple power supplies with varying power-up and power-down sequences. It can be used in a variety of applications where reliable power-up and power-down sequences must be executed. Its versatile power reset management system, protection features, and ability to be combined with other Dallas Semiconductor supervisors makes it an excellent choice for designs requiring reliable power management.

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