UC2834N

Overview

The UC2834N is a high-efficiency linear regulator controller designed for low input-output differential applications. It features dual precision references (+1.5V and -2.0V) to support both positive and negative regulator designs. The device includes a 200mA sink/source driver output stage, an adjustable current sense amplifier, and fault monitoring circuits with under/over-voltage alerts. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Supports both positive and negative regulator topologies using internal precision references
• Includes programmable delay for transient rejection in fault monitoring circuits
• Features a crowbar drive output activated by sustained over-voltage conditions
• Integrates thermal shutdown protection against excessive power dissipation

Applications

• Low input-output differential linear regulators
• Positive or negative supply line current limiting
• System control reset and remote shutdown implementations

Procurement Notes

Verify the specific package type and suffix against official Texas Instruments documentation to ensure compatibility with the required operating temperature range and pinout configuration. Confirm RoHS compliance status and moisture sensitivity level ratings prior to procurement to align with assembly process requirements.

Selection Notes

Select this component when designing regulators requiring minimal voltage drop across external pass devices. Ensure the application utilizes external components to handle load currents exceeding the internal driver limits. Verify that the fault detection thresholds and delay settings meet the system's transient immunity requirements.

Part Context

The UC2834 belongs to the UC1834 family of integrated circuits optimized for linear regulator designs. This family shares core architectural features but differs in operating temperature ranges and qualification standards. The UC2834 variant specifically targets commercial industrial environments.

Replacement Considerations

UC2834DW