MAX6805US31D1+T

The MAX6805US31D1+T is a Microprocessor System Supervisor integrated circuit (IC) for use in mobile and battery-powered applications. It monitors system level voltages, including VDD and VBAT, and provides three independent power-on reset outputs (POR), brown-out reset (BOR), and system reset (SRST). This device offers excellent reset accuracy, small package size, low power consumption, and small cost. MAX6805US31D1+T is ideal for use in mobile and other powered devices such as portable phones, PDAs and digital cameras.

The MAX6805US31D1+T is mainly used in the field of Power Management ICs or PMICs. It is classified as a Supervisory IC and is used to maintain microprocessor system stability. The IC can monitor and track system level voltages including VDD and VBAT. It triggers a reset outputs when any of the monitored voltages fall below the pre-set thresholds. The POR, BOR, and SRST outputs are triggered appropriately.

The MAX6805US31D1+T has an excellent reset accuracy. It can keep the voltage within a accuracy of ±0.3V. It can be operated from a voltage range from 1.8V to 5.5V and is typically used in 3.3V systems. The IC is available in 8-pin and 10-pin packages providing small footprint and board area. It has low power consumption of only 500nA when powered from VDD as compared to other supervisor ICs of the same voltage range.

The MAX6805US31D1+T works on a simple presetting mechanism.It has programmable voltage thresholds set at 1.575V, 2.03V, 2.325V and 3.118V. It monitors system voltages or VDD and VBAT, when any of these voltages falls below the threshold values, a reset output is triggered. Upon reset, certain circuits in associated systems or systems reset to their original state when the voltage level is restored above the threshold values.

The three independent power-on reset outputs (POR), brown-out reset (BOR), and system reset (SRST) help maintain microprocessor systems stability. During system-level variation, POR triggers reset to reset circuits when the VDD voltage falls below 1.575V. BOR is triggered when VDD voltage falls below a threshold of 2.03V and can be used to reset all system memories. SRST triggers a reset when VBAT falls below a threshold of 3.118V and can be used to protect codecs and other system memory.

The MAX6805US31D1+T is designed to minimize cost and power consumption from VDD as compared to other supervisor ICs in the market. It is available in 8 pin and 10 pin packages providing best footprints and board area. It provides excellent reset accuracy and low current consumption of 500nA while powered from VDD. This makes the MAX6805US31D1+T a perfect choice for PMICs in mobile devices, portable phones, PDAs, and digital cameras.