LT3050EDDB-3.3#TRPBF

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

The LT3050EDDB-3.3#TRPBF is a micro-power, low noise, low dropout voltage (LDO) linear regulator from the LT3050 series manufactured by Analog Devices Inc. It provides a fixed 3.3V output with a maximum current of 100mA and a typical dropout voltage of 340mV at full load. The device features a programmable precision current limit accurate to ±5% over a wide input voltage and temperature range. It includes diagnostic outputs such as an output current monitor sourcing 1/100th of IOUT and a logic FAULT pin that asserts low during current limit, minimum output current, or thermal shutdown conditions. The input voltage range spans from 1.6V to 45V.

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

• Precision current limit programming via a single external resistor
• Diagnostic fault indicator for current limit, open-circuit, and thermal events
• Output current monitoring function proportional to load current
• Low noise performance with soft-start capability via reference bypass

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

• Automotive telematics systems
• Industrial applications including trucks and forklifts
• High reliability power supply designs
• Protected antenna supplies

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

Verify the specific ordering suffix #TRPBF corresponds to tape and reel packaging when placing orders. Confirm the E-grade temperature rating (-40°C to 125°C) matches application requirements. Ensure the DFN package variant aligns with PCB footprint specifications. Cross-reference the manufacturer part number with official distributor catalogs to confirm availability and lead times prior to procurement.

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

Select this component for applications requiring robust protection against short circuits and open loads. The integrated diagnostic features facilitate system health monitoring in critical infrastructure. Consider the low dropout characteristic for efficiency in battery-powered or low headroom scenarios. Verify that the required output current does not exceed the 100mA limit under all operating conditions.

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

This part belongs to the LT3050 series of linear regulators designed for high-reliability environments. The series offers both adjustable and fixed output voltage options. The EDDB designation indicates the E-grade temperature range and the DFN package type. The series is characterized by its ability to drive low ESR ceramic capacitors stably.

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

LT3050EDDB-3.3#PBF

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

How is the current limit programmed?

The current limit is set using a single resistor connected between the IMAX pin and GND. The accuracy is maintained within ±5% across the specified input voltage and temperature ranges.

What triggers the FAULT pin assertion?

The FAULT pin goes low if the device enters current limit mode, if the output current falls below the programmed minimum threshold (indicating an open circuit), or if thermal shutdown occurs.