LT1933IDCB#TRPBF

Overview

The LT1933IDCB#TRPBF is a current mode PWM step-down DC/DC converter manufactured by Analog Devices Inc. It integrates an internal 0.75A power switch and operates at a switching frequency of 500kHz. The device provides a positive adjustable output voltage starting from 1.245V with a maximum output current capability of 600mA. It is housed in a compact 6-lead SOT-23 package, designed for surface mount installation to facilitate efficient space-constrained power management applications.

Feature Summary

• Integrates a 0.75A internal power switch for compact design
• Operates at a fixed 500kHz switching frequency
• Provides positive adjustable output voltage regulation
• Supports up to 600mA continuous output current

Applications

• Battery-powered portable electronics
• Point-of-load regulation modules
• Embedded system power supplies
• General-purpose step-down conversion circuits

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm that the D-cup or similar thermal pad requirements are met for proper heat dissipation. Ensure the input voltage range aligns with the source supply before procurement. Cross-reference the manufacturer's latest datasheet for any pinout revisions or updated absolute maximum ratings prior to finalizing purchase orders.

Selection Notes

Select this component when a small footprint and moderate current drive are required. The 500kHz frequency allows for smaller passive components compared to lower frequency alternatives. Ensure the load current does not exceed the 600mA limit. Verify that the minimum output voltage requirement is compatible with the 1.245V floor. Consider thermal performance within the SOT-23 package for high-duty cycle applications.

Part Context

This part belongs to the LT1933 series of switching regulators from Analog Devices. It is specifically designed as a buck converter offering high efficiency in a minimal package size. The IDCB designation typically refers to the industrial temperature grade and the specific DFN or SOT-23 variant configuration depending on the exact datasheet revision, though commonly associated with the 6-lead form factor.

Replacement Considerations

Direct replacements may include other 600mA buck converters from Analog Devices such as the LT1934 if higher current is needed. Check compatibility with existing feedback resistor networks when substituting with different regulator families. Ensure the replacement supports the same 500kHz frequency or adjust external compensation accordingly.