LT1175IST-5#TRPBF

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

The LT1175IST-5#TRPBF is a negative micropower low dropout regulator manufactured by Analog Devices Inc. It provides a fixed -5V output with a maximum current of 500mA in a 3-lead SOT-223 package. The device operates within a junction temperature range of -40°C to +125°C and features a quiescent current of 45μA, reducing to 10μA in shutdown mode. Key electrical parameters include a line regulation of 0.003%/V, load regulation of 0.1%, and a typical dropout voltage of 100mV at light loads.

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

• Micropower operation with 45μA quiescent current and 10μA shutdown current
• Low dropout voltage characteristics for high efficiency
• Adjustable current limit selectable via external pins
• Stable with a wide range of output capacitors

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

• Battery-powered systems
• Modems
• Instrumentation
• Interface drivers

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

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the I-grade designation matches the required -40°C to +125°C operating temperature range for your application environment. Ensure the SOT-223 footprint aligns with your PCB design constraints before finalizing procurement.

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

Select this component for applications requiring negative voltage regulation with minimal power consumption. The fixed 5V version simplifies design by removing external feedback resistors. Consider the adjustable current limit feature if protection against overload is required without adding external circuitry.

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

This part belongs to the LT1175 family of negative low dropout regulators. It shares core architecture with other variants like the LT1175IS8-5 but differs in package type. The SOT-223 form factor offers a compact surface-mount solution suitable for space-constrained designs compared to larger through-hole options.

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

LT1175CST-5#TRPBF serves as a functional substitute with identical electrical specifications but a commercial temperature grade (0°C to +125°C). Verify thermal requirements before substitution.