S-1000C34-I4T1U

Series:	S-1000
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Voltage Detector
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active Low
Reset Timeout:	--
Voltage - Threshold:	3.4V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	4-SMD, Flat Leads
Supplier Device Package:	SNT-4A

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## IntroductionThe S-1000C34-I4T1U is a single package, dual-channel supervisory circuit from SiiTech. The device monitors two independent power supplies, allowing much of the design effort to be expended on the two power supplies’ initial setup, rather than on disparate circuit designs on the board. It simplifies board design, and provides an efficient way to manage multiple power supplies in complex systems. ## FeaturesThe S-1000C34-I4T1U is an efficient, cost-effective solution for monitoring multiple power supplies, with many features making it ideal for a variety of applications:* It has two independent channels, each of which monitors its own dedicated power supply* It requires just one package size and offers unified support for up to 2.7V* It consumes very little power – just 0.85mW* It has selectable Power-On Reset and Watchdog Timer delays* It has a watchdog timer function with a maximum selectable timeout of 6.5s* It has a Power Loss Detection (PLD) feature, which can detect power loss in both supplies* It has a manual reset input, allowing a manual reset of the system* It has hysteresis to ensure reliable operation ## Application FieldThe S-1000C34-I4T1U is well suited for a variety of applications, such as in consumer electronic products, automotive systems, industrial systems, and communications applications. With its two channels, the S-1000C34-I4T1U allows the user to monitor two independent power supplies, enabling efficient power management in a multitude of systems. ## Working Principle The S-1000C34-I4T1U works by monitoring the input voltage of each input channel, and taking action when the voltage falls outside of a predetermined range. When the voltage drops below the power-on threshold (Vth1), the device will assert a Power-On Reset (POR) signal to reset the system, or start a Watchdog Timer (WDT) if enabled. Similarly, if the voltage goes above the Power-Loss Detection (PLD) threshold (Vth2), the device will generate a Power-Loss Detected (PLD) signal. When the watchdog timer is enabled, the S-1000C34-I4T1U will monitor the input voltage of each channel. If the voltage stays below Vth1 for more than the pre-configured timeout period, the device will assert a WDT signal to reset the system. The device also has hysteresis to ensure reliable operation. Hysteresis is a differential between the power-on and power loss thresholds, which prevents bouncing between these two states due to small fluctuations in the power supply voltage. The S-1000C34-I4T1U provides an efficient and cost-effective way to monitor multiple power supplies, allowing efficient power management in a multitude of systems. ## ConclusionThe S-1000C34-I4T1U is a single package, dual-channel supervisory circuit from SiiTech. It is an efficient and cost-effective solution for monitoring multiple power supplies, with many features making it ideal for a variety of applications. It has two independent channels, each of which monitors its own dedicated power supply, and it requires just one package size, and offers unified support up to 2.7V. It has selectable Power-On Reset and Watchdog Timer delays, as well as a Power Loss Detection feature. Additionally, it has a manual reset input, allowing a manual reset of the system, and hysteresis to ensure reliable operation. Ultimately, the S-1000C34-I4T1U provides an efficient way to manage multiple power supplies in complex systems.

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