LV5809MX-TLM-H

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The LV5809MX-TLM-H is a DC DC switching regulator designed for use in industrial, automotive and consumer applications. This versatile regulator offers adjustable output voltages from 0.3 to 14 VDC with up to 3A of output current and a low quiescent current for lower power consumption. The device is designed for use in high temperature environments and is rated to operate over a wide temperature range of -20°C to +85°C.

Features

• Input Voltage Range: 4.0 ~ 32V
• Max Output Voltage: 14V
• Output Current: 0.9 ~ 3A
• Switching Frequency: 400 kHz type (fixed)
• Operating Temperature: -20°C ~+85°C
• Output Voltage Range Accuracy : ±2%
• Low Quiescent Current: 90 μA (Typical)

Application Field

The LV5809MX-TLM-H is suitable for a variety of power supply applications including industrial, automotive, consumer and communications. Typical applications include IGBT gate and solenoid drivers, servo motors, sensor and actuator power supplies, and general-purpose power supplies.

Working Principle

The LV5809MX-TLM-H is an efficient, DC-to-DC switching regulator. It operates on a standard switching waveform at a typical frequency of 400 kHz, allowing for flexibility in design. The switching waveform operates at a constant frequency with a variable duty cycle, allowing the output voltage to be adjusted by changing the duty cycle of the waveform. The duty cycle is set by a control signal from an external error amplifier based on the output voltage compared to the reference voltage.

The LV5809MX-TLM-H\'s control loop will adjust the duty cycle so that the output voltage is equal to the reference voltage. The device will automatically adjust the output voltage depending on variations in temperature and load conditions, so no external components are needed for compensation.

The LV5809MX-TLM-H also features a Low Dropout mode, which will keep the output voltage above a preset minimum value with input voltages as low as 3V. This helps to ensure that the output voltage is stable even with variations in the input voltage.

The LV5809MX-TLM-H also incorporates protection features including output over voltage, output over current, over temperature, and under voltage lock out to protect against damage from improper operation.

Conclusion

The LV5809MX-TLM-H is an efficient, reliable DC DC switching regulator designed for use in a variety of applications. Its adjustable output voltage, low quiescent current, wide operating temperature range and protection features make it a suitable choice for many industrial, automotive and consumer applications. The device is easy to use and offers a high level of performance and reliability.

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