BU33SD5WG-TR

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The BU33SD5WG-TR is a single-channel CMOS Low Dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It provides a fixed output voltage of 3.3 V with a maximum output current capability of 500 mA. The device is housed in a compact SSOP-5 surface-mount package, suitable for space-constrained designs. It operates within an ambient temperature range of -40°C to +85°C. Key electrical characteristics include a typical operating supply current of 33 µA and a maximum dropout voltage of 150 mV at full load. The regulator features high line regulation of 6 mV and load regulation of 2.5 mV, ensuring stable performance under varying input and load conditions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• High-performance CMOS LDO architecture supporting up to 500 mA output current
• Excellent noise suppression and fast load response characteristics
• Low power consumption with minimal operating supply current
• Compact SSOP-5 surface-mount packaging for efficient board layout

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Portable battery-powered electronic devices requiring stable 3.3 V logic levels
• Embedded systems utilizing microcontrollers and memory components
• Communication modules needing low-noise power supply rails
• Industrial control units operating in extended temperature environments

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the complete part number including the suffix TR to confirm reel packaging configuration. Ensure compatibility with SSOP-5 footprint dimensions during PCB design. Confirm RoHS compliance status through official manufacturer documentation prior to procurement. Check for obsolescence notices or lifecycle changes directly from ROHM Semiconductor sources before finalizing component selection.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 3.3 V output with 500 mA capacity is required in a small form factor. Consider the 150 mV dropout voltage against your minimum input voltage requirements. Evaluate the 33 µA quiescent current impact on overall system battery life. Compare thermal dissipation capabilities against expected load profiles to ensure operation within safe junction temperatures.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This device belongs to the BU33SD5 series of high-performance CMOS LDO regulators from ROHM Semiconductor. The series is designed for applications demanding low noise and high transient response. The BU33SD5WG-TR specifically denotes the 3.3 V fixed output variant in SSOP-5 packaging with tape-and-reel delivery. It serves as a power management solution for modern portable electronics.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Direct substitutes may include other ROHM BU33SD5 variants with different output voltages if adjustable settings are acceptable. Cross-reference pin-compatible LDOs from other manufacturers only if electrical specifications such as dropout voltage and current rating meet or exceed original requirements. Verify thermal performance and package tolerance matches before substitution.