MIC37151-3.3WR-TR

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

The MIC37151-3.3WR-TR is a fixed-output linear regulator manufactured by Microchip Technology, designed for positive voltage regulation with a single output configuration. It provides a fixed output voltage of 3.3V and supports a maximum output current of 1.5A. The device features a low dropout voltage of 0.5V at full load and accepts an input voltage up to 6V. Housed in a surface-mount 3-SPAK package (3 leads plus tab), it operates within a temperature range of -40°C to 125°C. Key protection functions include overcurrent, thermal overload, and reverse polarity protection.

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

• Integrated reverse polarity protection safeguards the circuit against incorrect power supply connections.
• Built-in thermal overload protection prevents damage during high-temperature operation or fault conditions.
• Overcurrent protection limits output current to prevent component failure under short-circuit scenarios.

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

• Portable electronic devices requiring stable 3.3V logic levels
• Embedded systems utilizing Microchip microcontrollers
• Battery-powered applications needing efficient linear regulation

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

Verify the specific suffix 'WR' corresponds to the required tape-and-reel packaging format as indicated by distributor listings. Confirm that the 3-SPAK footprint matches the target PCB design, noting the exposed thermal pad requirement for proper heat dissipation. Ensure compliance with RoHS3 standards if environmental regulations apply to the final assembly.

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

Select this component when a fixed 3.3V rail is required with up to 1.5A capacity from a source voltage not exceeding 6V. The 3-SPAK package offers a compact solution for space-constrained designs while providing adequate thermal performance through the exposed pad. Consider the internal protection features for robustness in potentially hostile electrical environments.

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

This part belongs to the MIC3715x series of low-dropout regulators from Microchip Technology, originally developed under Micrel. The series includes variants with different fixed output voltages, such as 1.5V, 2.5V, and 3.3V, all sharing similar pinouts and protection architectures. The MIC37151 specifically denotes the 3.3V output variant within this family.

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

MIC37150-3.3WR-TR

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

What is the maximum input voltage allowed for this regulator?

The maximum input voltage is 6V.

Does this device support adjustable output voltages?

No, the MIC37151-3.3WR-TR provides a fixed 3.3V output only.