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LT1584CT-3.3#PBF Application Field and Working Principle

The LT1584CT-3.3#PBF is a precision micropower voltage regulator from Linear Technology. It is part of the company\'s PMIC – Voltage Regulators – Linear product family. It is a viable solution for applications with tight space constraints. As its μP Supervisory abilities have improved, this part can be used for a current or voltage source.

Key features

• Wide supply range from 2V to 36V
• Output voltage fixed to 3.3V or adjustable from 1V to 36V
• High output current up to 150mA
• Very low quiescent current (only 2μA quiescent)
• Output voltage accuracy of ±2%
• Short-circuit protection
• Thermal regulation

Description

The LT1584CT-3.3#PBF is an advanced, low power monolithic voltage regulator, which provides excellent Load and line voltage tolerance. This regulator exhibits tight tolerance of ±2% over temperature and includes a thermal overload protection circuit which keeps the output voltage within specified limits. The minimum quiescent current of this device is only 2μA, providing ultra low power performance. Also, the minimum off-time of the output switch is guaranteed to 1μs. This ensures a wide output voltage range and minimum power loss in low voltage applications. The output current limit is designed to keep the voltage drop across the output switch below 100 mV resulting in better regulation.

The LT1584CT-3.3#PBF is designed to be used on high side, low side, and battery voltage regulators. It has an input range of 2V to 36V and an output of 3.3V. The maximum output current is 150mA and the output voltage accuracy is ±2% over temperature. The output voltage is adjustable from 1V to 36V by setting the resistor values of the OUT and adj pins. The short-circuit protection circuitry prevents excessive power dissipation by limiting the output current. The thermal regulation circuitry protects the device from overheating.

Applications

• High side, low side, or battery voltage regulators
• Battery management applications
• Power supply sequencing applications
• Lighting controls
• Motor controls
• Cellular phone power supplies
• PCMCIA cards
• Portable instruments

Advantages

• Low power dissipation
• Programmable output voltage
• Tight tolerance of the output voltage
• Current or voltage source
• High output current
• High efficiency

Conclusion

The LT1584CT-3.3#PBF from Linear Technology is a versatile voltage regulator. It offers a wide operating range from 2V to 36V and an output of 3.3V. It is suitable for a variety of applications, including high side, low side, and battery voltage regulator applications. With its high output current, tight tolerance of ±2%, and thermal regulation circuitry, the LT1584CT-3.3#PBF is an excellent choice for voltage regulation. It is a reliable solution for applications requiring a small form factor and low power dissipation.

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