DS1231S-20

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active High/Active Low
Reset Timeout:	150 ms Minimum
Voltage - Threshold:	4.37V, 4.62V
Operating Temperature:	0°C ~ 70°C (TA)
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	16-SOIC
Base Part Number:	DS1231

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Introduction to PMIC - SupervisorsPMIC or power management ICs are a type of integrated circuit designed to regulate and control the delivery of power to devices in a system. These versatile circuits are designed to process digital and analog signals and precisely control the voltage, current and timing of a power system.PMIC - Supervisors are a device used in power management applications to monitor power supply levels, detect over-voltage and under-voltage, and provide a reset signal in the event of a fault. A supervisor monitors the power supply levels in the system and provides a reset signal if the voltage drops below a certain value or rises above it. The supervisor also monitors the system\'s power supply and temperature, and provides an indication when the power supply starts or stops. Supervisors are typically used in power management applications such as monitoring batteries, power supplies and current, as well as providing reset or power supply fail signals.DS1231S-20 Application Field and Working PrincipleThe DS1231S-20 is a supervisor designed to monitor power supply levels and provide an output reset signal in the event of a fault. The device provides voltage supervision with up to four reset levels and up to four reset thresholds. The DS1231S-20 supports up to four positive input power supply voltages and up to four outputs. It features an open drain output, a status pin for reporting device health and temperature, and two independent reset outputs.The DS1231S-20 supports a wide input voltage range from 1.8 V to 7.2 V. The device is robustly built and operates over a wide temperature range from -55C to +125C. The device is programmed by two 8-bit external registers. These registers control the reset thresholds and reset levels settings. The DS1231S-20 has a hysteresis of 1.2V and a 120ms reset timeout. The reset output is triggered when the VDD voltage exceeds or falls below the programmed reset levels. The device will reset any time the VDD voltage goes below the minimum reset level or above the maximum reset level. When the reset Max (Vmax) changes, the device adjusts the new reset thresholds automatically. The device also supports a reset out signal adjustment (delta_reset) to add hysteresis to the reset level. The hysteresis values can be set from 0 to 1.2V.The DS1231S-20 is mainly used for power management applications such as in DC-DC converters and voltage regulators in industrial systems. It is highly reliable, and its onboard supervisor circuit detects even the slightest power supply failure, alerting the system that it needs to reset. This makes the DS1231S-20 an ideal choice for applications such as power management and voltage regulators, where precise power monitoring and control are critical. In conclusion, the DS1231S-20 supervisor is an ideal choice for monitoring power supply levels, detecting over-voltage and under-voltage, and providing a reset signal in the event of a fault. The device is robustly built and operates over a wide temperature range, and is programmed by two 8-bit external registers. The DS1231S-20 is mainly used for power management applications in industrial systems, providing precise power monitoring and control in a reliable and cost-effective manner.

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