MAX6191CESA

Noise - 0.1Hz to 10Hz:	40µVp-p
Base Part Number:	MAX6191
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Current - Supply:	35µA
Voltage - Input:	2.5 V ~ 12.6 V
Noise - 10Hz to 10kHz:	105µVrms
Series:	--
Temperature Coefficient:	25ppm/°C
Tolerance:	±0.49%
Current - Output:	500µA
Voltage - Output (Min/Fixed):	2.048V
Output Type:	Fixed
Reference Type:	Series
Part Status:	Obsolete
Packaging:	Tube

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Introduction

MAX6191CESA is a voltage reference device primarily designed for power management integrated circuits (PMIC). It is a voltage reference device that can provide a stable reference voltage for improving the accuracy of measuring voltage in PMICs. This device also offers an extremely low 0.7μA of quiescent current to minimize power consumption. With its wide operating voltage range of 1.65V to 5.5V, the MAX6191CESA is suited for various applications in different power management verticals.

Application Field

MAX6191CESA can be used to monitor battery levels and the thermal status within PMIC circuits. Different result sets are reported when the device is in use, such as voltage, current, power, and temperature. This device also offers users a choice of adjustable voltage settings within a range of 1.65V to 5.5V. The wide range of adjustable settings allows it to be used in all kinds of PMIC applications such as in switching regulators, uP, and power controllers.MAX6191CESA is also suitable for applications involving current-sense amplifiers, comparator circuits, and power management circuit protection. It is also suitable for automotive applications that rely on accurate voltage references for stability in unstable environments. Furthermore, the MAX6191CESA also offers short circuit protection and is capable of handling input and output transient surges.

Working Principle

The MAX6191CESA is an adjustable voltage reference that features a constant voltage start-up with an extremely low quiescent current. It provides a highly stable reference voltage of up to 5.5V. The device includes an adjustable resistor and a low-bias current, which is used to provide the reference voltage. The device also utilizes a simple, but effective hysteresis method that sets the reference voltage within a certain range defined by the user. The hysteresis feature allows the reference voltage to be set without the need of an initial voltage being applied to the device. This allows for quicker and more stable start-up times as well as maintaining a low power requirement.The MAX6191CESA also features a functional high impedance reference diode that helps to reduce the voltage drop under load. The device is designed with a low impedance output stage, which helps maintain a constant output impedance. This makes it ideal for use in PMICs that require an accurate reference voltage with low power consumption and power stability.

Conclusion

The MAX6191CESA is an adjustable voltage reference device primarily designed for power management integrated circuits (PMICs). It offers a wide operating voltage range of 1.65V to 5.5V and provides an extremely low 0.7μA of quiescent current, which reduces power consumption. It also uses hysteresis to provide a stable reference voltage without having to apply an external voltage. The MAX6191CESA is suitable for a variety of applications, such as those in current-sense amplifiers, comparator circuits, switching regulators, uP, and power controllers. It is also suitable for automotive applications that require an accurate voltage reference in unstable environments.

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