LT3467EDDB#TRMPBF Integrated Circuits (ICs)

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DC-DC switching regulators are used to convert a fixed input voltage to a regulated output voltage that is both adjustable and relatively independent of input voltage and load current. The LT3467EDDB#TRMPBF is a Step-Down DC-DC Switching Regulator specifically designed for low-power applications. It has low quiescent current and is available in 3.2 V to 13.2 V input range, making it suitable for a variety of industrial, automotive and consumer applications.

This IC features a fixed frequency, current-mode control, as well as an adjustable frequency Clock Sync/FORCEA/RTUNE circuitry. The multi-mode input low drop-out (LDO) provides guaranteed regulation during light output load conditions, or when the input voltage is close to the output voltage in order to regulate the output voltage during start-up. The LT3467EDDB#TRMPBF also includes a low-power sleep mode, where quiescent current is reduced to 20 µA. The output voltage can be adjusted between 0.6 V to 6.5 V.

Features

• 3.2 V to 13.2 V input voltage
• Fixed frequency current mode control
• Multi-mode low drop-out (LDO) modes
• Adjustable frequency Clock Sync/FORCEA/RTUNE circuitry
• Low quiescent current operation
• Sleep mode reduces quiescent current to 20 µA
• Output voltage adjustable between 0.6 V to 6.5 V

Application Field

The LT3467EDDB#TRMPBF is a DC-DC switching regulator with low quiescent current and adjustable output voltage. It is very suitable for applications where low power consumption and adjustable voltage regulation is required. It is suitable for a wide variety of industrial, automotive, and consumer applications. Some typical applications include:

• Battery-powered systems
• Smartphone, wearable device, and digital camera chargers
• Industrial control, process control, and diagnostic systems
• Handheld medical devices
• Power supply for mobile/wearable medical applications
• Point of load conversion

Working Principle

The LT3467EDDB#TRMPBF uses a fixed frequency current mode control topology, with an adjustable frequency Clock Sync/FORCEA/RTUNE control system. The Clock Sync/FORCEA/RTUNE control system is used to set the output setpoint. The RTUNE pin works as a feedback pin and is used to monitor the output voltage. The FORCEA pin is used to adjust the frequency of the switching regulator, allowing the designer to have precise control over the output voltage. The Clock Sync pin is used to synchronize the frequency of the regulator with an external clock, allowing for precise frequency control.

The multi-mode Low Drop-Out (LDO) mode provides guarantees for precise power converter operation during light load conditions or when the input voltage is close to the output voltage. The low-power sleep mode reduces the quiescent current to 20 µA, ensuring that the DC-DC regulator does not consume too much power when idle.

The LT3467EDDB#TRMPBF DC-DC switching regulator is a compact and easy to use regulator, with adjustable frequency Clock Sync/FORCEA/RTUNE circuitry, low quiescent current, low-power sleep mode, and multi-mode LDO modes for precise operation. It is ideal for a wide range of industrial, automotive, and consumer applications.

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