UC2834QTRG3

Overview

The UC2834QTRG3 is a high-efficiency linear regulator controller from the UC1834 family, designed for low input-output differential applications. It features adjustable current sense amplifiers and under/over-voltage fault monitoring with programmable delay. The device includes a 100mA crowbar drive output for over-voltage protection and an internal thermal shutdown function. It supports both positive and negative regulator designs using external pass devices.

Feature Summary

• Optimized for low input-output differential linear regulators with external pass devices
• Adjustable threshold current sense amplifier for supply line current limiting
• Under and over-voltage fault alert with programmable transient rejection delay
• Over-voltage latch with 100mA crowbar drive output for system shutdown

Applications

• 5-10 Amp positive linear regulator designs
• 5-10 Amp negative linear regulator designs
• Systems requiring foldback current limiting
• Applications needing precise over-voltage protection with crowbar functionality

Procurement Notes

Verify the specific suffix QTRG3 against official Texas Instruments documentation to confirm package type and moisture sensitivity level. Ensure compatibility with the required operating temperature range of -40°C to +85°C for the UC2834 variant. Confirm that the SOIC-16 packaging matches your PCB footprint requirements before procurement.

Selection Notes

Select this component when designing linear regulators with minimal voltage drop across the pass device. It is suitable for applications requiring robust fault protection including under-voltage alerts and over-voltage latching. Consider the need for external pass transistors capable of handling the specified driver currents and power dissipation levels.

Part Context

The UC2834 belongs to the UC1834 family of integrated circuits manufactured by Texas Instruments. This family is optimized for high-efficiency linear regulator designs. The UC2834 specifically covers the commercial temperature range, distinguishing it from the military-grade UC1834 and industrial UC3834 variants within the same functional family.

Replacement Considerations

UC2834DW