LM2599S-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2599S-ADJ is a SIMPLE SWITCHER power converter featuring an integrated 3A switch. It operates as a step-down voltage regulator with an input voltage range of 4.5V to 40V and an adjustable output from 1.2V to 37V. The device utilizes a fixed 150kHz switching frequency, enabling the use of compact inductors and capacitors. It incorporates internal frequency compensation and a reference voltage for ease of design. The component is housed in a TO-263 package and supports operation across a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated 3A power switch for high current handling
• Fixed 150kHz switching frequency reduces external component size
• Internal frequency compensation simplifies circuit design
• Adjustable output voltage via external resistor divider

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation modules
• Pre-regulators for switching regulators
• Efficient buck converters for battery-powered systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against the manufacturer datasheet to confirm pinout and thermal pad configuration. Ensure the ordering part number matches the required tolerance and package variant. Cross-reference RoHS compliance status if environmental regulations apply to the final assembly. Confirm availability of the specific revision level required for production consistency.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a high-current buck converter is required with minimal external components. The adjustable output allows flexibility for various rail voltages. Consider the thermal performance of the TO-263 package under maximum load conditions. Verify that the input voltage does not exceed the 40V absolute maximum rating during transient events.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the Texas Instruments SIMPLE SWITCHER family, designed for straightforward DC-DC conversion. It shares architectural similarities with the LM2596 but offers higher current capability. The series is widely used in industrial and commercial applications requiring efficient power management. The 'S' designation indicates the surface-mount TO-263 package variant.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2596S-ADJ (Lower current, 3A vs 1A)

Voltage Regulators - DC DC Switching Regulators FAQ

What is the minimum input voltage required for proper regulation?

The minimum input voltage is 4.5V.

Can the output voltage be set below 1.2V?

No, the minimum adjustable output voltage is 1.2V.