MIC5253-3.0BC5

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

The MIC5253-3.0BC5 is a fixed-output low-dropout linear voltage regulator manufactured by Micrel, providing a nominal 3.0V output with 1.5% initial accuracy. It supports a continuous output current of 100mA and a peak current of 150mA within an input voltage range of 2.7V to 5.5V. The device features ultra-low dropout characteristics, reaching 165mV at full load, and maintains a typical ground current of 95µA. It incorporates a dedicated bypass pin for noise reduction, achieving 30µV(rms) output noise, alongside TTL-compatible enable functionality and thermal shutdown protection.

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

• Ultra-low noise performance optimized for RF applications via a dedicated reference bypass pin
• TTL-logic-compatible enable pin enabling active shutdown with near-zero off-mode current consumption
• Stability ensured with low-ESR ceramic capacitors, minimizing required board space
• Integrated active clamp circuitry to accelerate device turn-off and discharge the load

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

• Cellular phones and pagers
• Battery-powered equipment
• Laptop, notebook, and palmtop computers
• Consumer and personal electronics

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

Verify that the component matches the specific Micrel datasheet M9999-112305. Confirm the package type is SC-70-5 (C5) and the marking code corresponds to the 3.0V variant. Ensure the supplier provides traceable documentation confirming compliance with RoHS standards as specified in the ordering information section.

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

Select this regulator when designing handheld or battery-powered devices requiring stable power delivery with minimal footprint. It is suitable for applications needing high output accuracy and fast transient response. Consider the thermal resistance of the SC-70-5 package when calculating maximum ambient operating temperatures under heavy loads.

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

This component belongs to the MIC5253 family of Teeny™ LDO regulators designed for ultra-low-noise environments. The BC5 suffix indicates a fixed 3.0V output version housed in the compact SC-70-5 package. The series is engineered specifically for portable wireless devices where power efficiency and physical size are critical constraints.

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

Direct substitutes include other MIC5253 variants with different fixed output voltages, such as MIC5253-3.3BC5 or MIC5253-2.8BC5, provided the system voltage requirements align.