KD1084DT33R

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

The KD1084DT33R is a fixed-output low-dropout positive voltage regulator manufactured by STMicroelectronics. It provides a nominal output voltage of 3.3 V with a guaranteed maximum output current of 5 A. The device operates within an input voltage range up to 12 V and features a typical dropout voltage of 1.3 V at full load, with a maximum guaranteed dropout of 1.5 V. It utilizes a DPAK surface-mount package and maintains an operating junction temperature range from -40 °C to +125 °C.

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

• Provides stable regulation for high-current loads up to 5 A with minimal voltage drop across the device.
• Quiescent current flows into the load rather than being wasted, thereby increasing overall system efficiency compared to traditional PNP regulators.
• Includes internal protection mechanisms against thermal overload and short-circuit conditions to ensure operational safety.

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

• Power supply stages in SCSI-2 active termination circuits
• High-current distribution networks in embedded systems
• Voltage regulation for peripheral devices requiring stable 3.3 V rails

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

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm that the received part matches the specified DPAK package and 3.3 V fixed output rating. Ensure compliance with environmental standards such as RoHS where applicable. Review the datasheet for absolute maximum ratings to prevent damage during installation and operation.

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

Select this component when a fixed 3.3 V rail is required with high current capability. The DPAK package offers a balance between thermal performance and board space. Consider the dropout voltage characteristics relative to the minimum available input voltage. Verify that the application does not exceed the maximum input voltage limit of 12 V under any operating condition.

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

This regulator belongs to the KD1084xx family of low-dropout positive voltage regulators. The series includes both adjustable and fixed output versions, with variants offering different tolerance levels. The KD1084DT33R specifically denotes the standard tolerance version housed in a DPAK package with a fixed 3.3 V output.

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

Compatible replacements include other parts from the KD1084 series with matching pinouts and electrical specifications. Verify that substitute components maintain the same 5 A current rating and 3.3 V output voltage. Ensure the replacement package type supports the required thermal dissipation for the specific application environment.