MC33161D

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Type:	Multi-Voltage Supervisor
Number of Voltages Monitored:	2
Output:	Open Drain or Open Collector
Reset:	--
Reset Timeout:	--
Voltage - Threshold:	Adjustable/Selectable
Operating Temperature:	-40°C ~ 105°C (TA)
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	MC33161

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MC33161D Application Field and Working Principle

MC33161D is a PMIC - Supervisors from the Microchip Technology Company, designed to provide general protection requirements for automotive, power supply and battery charger applications. This device monitor one or two voltage inputs, providing a simple and reliable means of monitoring primary, secondary and back-up power supplies. MC33161D includes features such as an adjustable reset pin delay, two selectable reset voltages and an adjustable reset voltage hysteresis. Additionally, this device features multiple output active-high-goes-low resets and a reset enable input which is available in three differently package options.

Features:

MC33161D provides an adjustable reset pin delay of 1 ms to 71 s and an adjustable reset voltage hysteresis of 0.25 V to 1.25 V. This device also provides two selectable reset voltages of either active high or active low reset type. Additionally, the device is available in several package options including SOIC-16-L, TSSOP-16-L and VDFN-8. In terms of its power enabling capabilities, this device enables operation from 3.3V to 16V with up to 12V of output voltage.

The Working Principle

The MC33161D works by comparing the input voltage to the reset threshold voltage. When the input voltage is below the reset threshold voltage, a reset signal is sent to the system. If the input voltage is above the reset threshold, no reset is triggered. The reset pin delay feature of the MC33161D creates a delay between the reset signal being triggered and the system being reset, allowing the system to perform clean up tasks while systems are being reset. Additionally, the adjustable reset voltage hysteresis feature can prevent the reset signal from being triggered multiple times.

Applications:

The MC33161D is ideally suited for automotive, power supply, and battery charger applications. The adjustable reset pin delay and adjustable reset voltage hysteresis make this device ideal for applications with frequent voltage fluctuations, such as automotive and battery charger applications. Additionally, this device is suitable for monitoring primary, secondary, and backup power supplies, making it ideal for power supply applications.

Conclusion:

The MC33161D from the Microchip Technology Company is an excellent PMIC - Supervisors for applications in the automotive, power supply and battery charger fields. This device offers adjustable reset pin delay, adjustable reset voltage hysteresis and multiple output active-high-goes-low resets, while also enabling operation from 3.3V to 16V with up to 12V of output voltage. The MC33161D is an ideal choice for applications with frequent voltage fluctuations, such as automotive and battery charger applications, as well as primary, secondary, and backup power supplies.

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