LT1933HS6#TRPBF

Overview

The LT1933HS6#TRPBF is a current mode PWM step-down DC/DC converter featuring an internal 0.75A power switch housed in a compact 6-lead SOT-23 package. It supports a wide input voltage range of 3.6V to 36V, enabling regulation from diverse sources such as automotive batteries and industrial supplies. The device operates at a fixed frequency of 500kHz, facilitating the use of small inductors and ceramic capacitors for low output ripple. Key electrical characteristics include a shutdown current of less than 2μA with output disconnect capability and an adjustable output voltage down to 1.25V.

Feature Summary

• Current mode PWM architecture with integrated high-current power switch
• Wide input voltage compatibility for varied power source applications
• High-frequency operation enabling miniaturized passive components
• Ultra-low shutdown current with output disconnect for battery management

Applications

• Regulating power from unregulated wall transformers
• Power supply conditioning for 24V industrial systems
• Battery-powered equipment requiring efficient power management
• Automotive electronic subsystems

Procurement Notes

Verify the specific suffix HS6 against the manufacturer datasheet to confirm pinout and thermal specifications. Ensure the ordering part number matches the required tape-and-reel packaging format. Cross-reference the component marking code with official documentation to prevent counterfeit substitution during assembly.

Selection Notes

Select this regulator when space constraints necessitate a SOT-23 footprint alongside moderate load requirements. The fixed 500kHz switching frequency optimizes the trade-off between component size and efficiency. Verify that the external inductor saturation current exceeds the internal switch limit to maintain stable operation under transient loads.

Part Context

This component belongs to the LT1933 family of monolithic switching regulators designed by Analog Devices. It shares architectural similarities with other ThinSOT devices but is distinct in its specific input range and current handling capabilities. The HS6 designation indicates the specific lead frame and package variant within the broader product line.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative step-down converters only after verifying pin-to-pin compatibility and ensuring equivalent thermal performance in the target application environment.