LT3055MPMSE-3.3#PBF

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

The LT3055MPMSE-3.3#PBF is a micropower, low noise, low dropout voltage (LDO) linear regulator from Analog Devices Inc. It supplies 500mA of output current with a typical dropout voltage of 350mV. The device features a ±45V input voltage rating and includes precision current limit and diagnostic functions. A 10nF bypass capacitor reduces output noise to 25μVRMS in a 10Hz to 100kHz bandwidth and soft starts the reference. The part provides fixed 3.3V output with ±2% tolerance over load, line, and temperature.

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

• Precision current limiting and programmable minimum output current monitoring for robust fault detection
• Integrated diagnostic pins indicating current limit, thermal limit, and minimum output current faults
• Low noise performance optimized for sensitive analog and RF applications
• Internal protection against reverse battery, reverse output, and thermal overload conditions

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

• Protected antenna supplies
• Automotive telematics systems
• Industrial applications such as trucks and forklifts
• High reliability power systems
• Noise-sensitive RF or DSP supplies

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

Verify the MP grade suffix indicates an extended operating junction temperature range of -55°C to 150°C compared to standard grades. Confirm the MSE package designation corresponds to the 16-lead plastic MSOP form factor. Ensure the #PBF suffix denotes lead-free finish compliance. Cross-reference the specific ordering code against official manufacturer documentation to validate availability and exact electrical specifications before integration.

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

Select this component when high input voltage tolerance up to 45V is required alongside precise current limiting capabilities. The MP grade is suitable for environments requiring operation down to -55°C. Consider the 16-lead MSOP package for board space constraints while ensuring adequate thermal management via the exposed pad. Verify that the external resistor network for current limit programming aligns with system fault thresholds.

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

This device belongs to the LT3055 series of linear regulators designed for demanding industrial and automotive environments. It combines standard LDO functionality with advanced diagnostic features typically found in more complex power management ICs. The series supports both adjustable and fixed output voltages, offering flexibility for various system architectures requiring robust power delivery and fault monitoring.

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

LT3055EMSE-3.3#PBF: Standard commercial/industrial grade (-40°C to 125°C). LT3055IMSE-3.3#PBF: Industrial grade (-40°C to 125°C). LT3055HMSE-3.3#PBF: High temperature grade (-40°C to 150°C). All share identical pinouts and electrical characteristics except for the guaranteed operating temperature range.