MIC5231-3.3BM5-TR

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

The MIC5231-3.3BM5-TR is a Micropower µCap low dropout voltage regulator manufactured by Microchip Technology, featuring a fixed 3.3V output and a 10mA drive capability in a SOT-23-5 package. It operates within an ambient temperature range of -40°C to +85°C and a junction temperature range of -40°C to +125°C. The device exhibits an output voltage accuracy of ±3%, a typical dropout voltage of 150mV at 10mA, and a ground pin current not exceeding 4µA. Ripple rejection is typically 50dB at 100Hz.

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

• Extremely low quiescent current for efficient keep-alive applications
• No output capacitor required for stable operation
• Logic-level enable input with zero current shutdown state
• Self-limited short-circuit protection via positive temperature coefficient

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

• Real-time clocks
• SRAM backup
• Cellular telephones
• Laptop, notebook and palmtop computers
• Battery-powered equipment

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

Verify the specific ordering suffix 'BM5' corresponds to the standard lead finish rather than the Pb-Free variant, which uses the 'YM5' suffix. Confirm that the component meets the required RoHS compliance standards for your assembly process. Ensure the supply voltage remains within the specified operating limits during procurement validation.

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

Select this regulator for biasing applications requiring extremely low ground current and minimal board space. It is suitable for designs where no minimum load current is necessary. Consider thermal constraints carefully, as the device lacks internal current limit or thermal shutdown mechanisms. Verify that the junction temperature does not exceed +125°C under maximum power dissipation conditions.

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

This component belongs to the MIC5231 family of Micropower µCap LDO regulators designed for low output current applications. It is characterized by its tiny SOT-23-5 IttyBitty package and high efficiency due to ultra-low quiescent current consumption. The series includes various fixed output voltages and packages to support diverse portable and battery-powered electronic designs.

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

MIC5231-3.3YM5-TR (Pb-Free version)

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

Does the MIC5231 require an output capacitor for stability?

No, the MIC5231 does not require an output capacitor for stable operation, although adding one can improve transient response.

What happens if the output is shorted to ground?

The device incorporates no current limit; however, the output pass element has a positive temperature coefficient that self-limits the current when heated.