MIC5245-3.1YM5-TR

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

The MIC5245-3.1YM5-TR is a fixed-output CMOS low-dropout voltage regulator providing a 3.1V output with a maximum load current of 150mA. It operates within an input voltage range of 2.7V to 6V and maintains a typical quiescent ground current of 100µA independent of the load. The device features ultralow dropout voltage, typically 150mV at 150mA, and delivers an output noise of 30µV(rms) over a 10Hz to 100kHz bandwidth. It includes a dedicated bypass pin for further noise reduction and offers protection via thermal shutdown and current limiting.

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

• Ultra-low noise performance suitable for RF applications
• TTL-compatible enable/shutdown control pin
• Stable operation with low-ESR ceramic capacitors
• Integrated active clamp for fast transient response

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

• Cellular phones and pagers
• Battery-powered equipment
• Laptop and notebook computers
• PCMCIA VCC and VPP regulation
• SMPS post-regulator/dc-to-dc modules

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

Verify component authenticity through authorized Microchip Technology channels or certified distributors. Confirm that the received part matches the MIC5245-3.1YM5-TR designation and SOT-23-5 package. Review the official datasheet for handling precautions regarding ESD sensitivity and proper soldering temperatures to ensure long-term reliability.

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

Select this component for designs requiring precise voltage regulation with minimal power consumption in portable devices. Ensure the application benefits from its stability with small ceramic output capacitors. Note that the datasheet indicates this series is not recommended for new designs; evaluate the MIC5255 as a modern alternative if available.

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

This device belongs to the MIC5245 family of ultra-low-noise LDO regulators originally manufactured by Micrel, now part of Microchip Technology. It is designed specifically for battery-powered handheld electronics where space and power efficiency are critical constraints. The YM5 suffix denotes the specific SOT-23-5 surface-mount package configuration.

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

The datasheet explicitly recommends the MIC5255 as a replacement for new designs. Verify electrical compatibility, particularly regarding output voltage accuracy and noise specifications, before substituting other LDOs.