TLV70018EVM-503

Series:	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Channels per IC:	1 - Single
Moisture Sensitivity Level (MSL):	--
Voltage - Output:	1.8V
Current - Output:	200mA
Voltage - Input:	2 V ~ 5.5 V
Regulator Type:	Positive Fixed
Board Type:	Fully Populated
Supplied Contents:	Board(s)
Utilized IC / Part:	TLV70018

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The TLV70018EVM-503 is an evaluation module and cost-effective solution for implementing a low-dropout linear voltage regulator (LDO). Its unique design can provide a wide range of voltage output levels and requires a minimum amount of power dissipation. The device has a wide output voltage range (1.0V to 7.5V) and operates with a supply voltage range (1.2V to 5.5V). It offers superior transient response times and improved EMI rejection performance. It also provides a shutdown input which provides additional power savings.

Features

• Wide Supply Voltage Range (1.2V to 5.5V)
• Wide Output Voltage Range (1.0V to 7.5V)
• Various Output Current Options (up to 0.25A)
• Low Dropout Voltage (only 0.4V at 0.25A)
• Low Quiescent Current (typically 2.4mA)
• Low No-load Output Voltage (typically 2.3V)
• High EMI Rejection (typically >70dB)
• Fast Transient Response (typically <5us)
• Shutdown Input for Power Saving

Applications

The TLV70018EVM-503 is suitable for applications where a wide range of adjustable output voltage is needed. It is highly suitable for powering small or low-power electronic devices including wireless devices, photovoltaic systems, digital cameras, audio amplifiers, consumer electronics, and computer peripherals. It can also be used to monitor and regulate battery voltage levels and in industrial applications.

Working Principle

The TLV70018EVM-503 works by using an architecture which consists of two main parts. The first part is the error-amplifier stage, which senses the output voltage and adjusts the feedback voltage to maintain a constant output voltage. The second part is the power stage, which consists of an operational transconductance amplifier (OTA) and the main pass transistor. The OTA provides the current-sense signal for the error amplifier stage. When the desired output voltage is achieved, the current-sense signal is turned off, thus reducing the quiescent current consumption. The main pass transistor is then used to regulate the output voltage.

Conclusion

The TLV70018EVM-503 from Texas Instruments is an excellent choice for implementing a low-dropout linear voltage regulator. It offers superior transient response times, improved EMI rejection performance, low power dissipation, and 75mV dropout voltage at 0.25A. With its wide output voltage range and adjustable current limits, it is perfectly suitable for powering small or low-power electronic devices, battery monitoring, and industrial applications.

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