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PMIC - Voltage Reference

The TL4050B25IDCKR is one of Texas Instruments\' voltage references, which is a member of their Integral Power Solutions series. The TL4050B25IDCKR is a precision 2.5 V low-dropout voltage reference with an output voltage tolerance of 2 millivolts (mV). This voltage reference is offered in a 10-pin mini small outline package (SON) and is built to withstand the rigorous requirements of high-end communication and consumer applications.

The TL4050B25IDCKR is designed for use in low power and compact space-constrained applications that require pin-programmable output voltage and fast response time. It is designed to have a low quiescent current so that it can be used in a battery-operated system where power consumption is an issue. The TL4050B25IDCKR is capable of providing a stable output voltage with a wide temperature range and can operate from a supply voltage of 2.7V to 5.5V.

Features

• Low-dropout 0.9V precision voltage reference
• Accuracy of 2 mV
• Output voltage range of 2.48V to 2.52V
• Wide temperature range of -40°C to +85°C
• Wide supply voltage range of 2.7V to 5.5V
• Low quiescent current of 7.3 µA
• Pin-programmable output voltage
• Fast response time

Applications

• Cameras
• Digital set-top boxes
• Mobile phones
• Bluetooth headsets
• Handheld gaming devices
• Battery powered systems
• Wired and wireless LANs
• Multi-channel audio systems

Working Principle

The basic principle of operation for the TL4050B25IDCKR is as follows. An input voltage to the reference is applied to a resistive divider network, and the output voltage of this divider is then compared to an internal reference voltage provided by a bandgap circuit. The difference between these two voltages is then amplified and used to drive the output voltage of the reference to the desired value.

The reference circuit has a feedback loop that maintains the output voltage at the desired value and compensates for line, load and temperature variations. The reference can also be programmed using an external control pin. This pin can be used to set the output voltage to any value within the specified range.

The TL4050B25IDCKR is a precision device and should be used with care. The reference’s output voltage can be affected by high static voltages, so it should be protected from static discharge. Additionally, the reference should not be subjected to high temperature or high voltage transients.

Conclusion

The TL4050B25IDCKR is a precision low-dropout voltage reference from Texas Instruments\' Integral Power Solutions series. This device is designed for low power and compact space-constrained applications that require pin-programmable output voltage and fast response time. It has a wide temperature range of -40°C to +85°C, and a wide supply voltage range of 2.7V to 5.5V. This device is highly accurate, with an output voltage tolerance of 2 mV. It also has a low quiescent current of 7.3 µA, making it suitable for battery-operated systems.

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