The LTC7138 is a high-efficiency buck converter designed by Linear Technology Corporation, capable of handling input voltages up to 140V. This versatile device delivers continuous output currents of up to 400mA and is well-suited for applications in telecommunications, industrial systems, avionics, and automotive environments. Its programmable hysteresis mode ensures optimal efficiency across a wide range of output currents, while the internal 1.8Ω power MOSFET guarantees reliable and efficient performance.
The LTC7138 offers user-programmable output current limits, allowing users to set the output between 100mA and 400mA based on their specific needs. It can be configured with a fixed output voltage of 1.8V, 3.3V, or 5V, or it can be adjusted using a resistor divider to provide an output voltage ranging from 0.8V up to the input voltage (VIN). The thermally enhanced MSOP package provides additional pin spacing, making it ideal for high-voltage applications.
With only four small external components required, the LTC7138 offers a compact design that is perfect for space-constrained applications. It also features a low quiescent current of just 12μA at no load, which makes it an excellent choice for battery-powered devices that need to remain active continuously.
The converter’s inherent stability eliminates the need for external compensation, simplifying the design process and reducing the overall footprint of the solution. Additional features include a precision 0.8V ±1% feedback voltage reference, 100% duty cycle differential operation, and support for both internal and external soft-start options. The feedback comparator output allows multiple LTC7138 devices to be connected in parallel for higher current applications.
This advanced buck converter is a powerful and flexible solution for a wide range of power management needs, combining high efficiency, reliability, and ease of use. Whether you're working on a telecom system, an industrial control unit, or an automotive application, the LTC7138 offers the performance and flexibility you need.
1.5mm Pitch
1.5mm Pitch
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