MIC5159YM6-TR

Voltage Regulators - Linear Regulator Controllers Overview

The MIC5159YM6-TR is a precision-voltage regulator controller from Microchip Technology, packaged in an SOT-23-6. It operates with an input voltage range of 1.65V to 5.5V and provides ±1.0% initial output tolerance. The device supports fixed 1.8V or adjustable output voltages down to 1.25V. It features logic-controlled shutdown, programmable current limit protection, and stability with ceramic output capacitors. The junction temperature range spans from –40°C to +125°C.

Voltage Regulators - Linear Regulator Controllers Feature Summary

• Precision regulation with fast transient response
• Logic-controlled enable and shutdown functionality
• Programmable current limit protection via external resistor
• Stable operation with ceramic output capacitors

Voltage Regulators - Linear Regulator Controllers Applications

• Ultra-high current, ultra-low dropout voltage regulators
• High-efficiency linear power supplies
• Low-voltage distributed power systems
• Fixed telecom equipment power supplies
• Battery chargers and low-voltage DSP/microprocessor power supplies

Voltage Regulators - Linear Regulator Controllers Procurement Notes

Verify the specific suffix YM6 corresponds to the adjustable voltage version in the SOT-23-6 package. Confirm that the ordering information matches the required output voltage configuration, as other variants exist for fixed outputs. Ensure the component meets RoHS compliance standards if required by your design specifications.

Voltage Regulators - Linear Regulator Controllers Selection Notes

Select this controller when designing a two-chip LDO using an external P-Channel MOSFET. Consider the thermal performance of the external MOSFET, as the controller lacks internal thermal protection. Calculate the necessary current sense resistor based on the desired maximum output current to set the current limit threshold accurately.

Voltage Regulators - Linear Regulator Controllers Part Context

This component belongs to the Micrel (now Microchip) IttyBitty series of µCap LDO regulator controllers. It is designed to work with external MOSFETs to create flexible, high-current power solutions. The family includes both fixed and adjustable output versions, offering versatility for various low-voltage applications requiring precise regulation.

Voltage Regulators - Linear Regulator Controllers Replacement Considerations

MIC5159BM6-TR

Voltage Regulators - Linear Regulator Controllers FAQ

How is the current limit programmed?

The current limit is set by placing a current sense resistor between the input and the IS pin. The value is calculated based on the desired maximum output current and the 50mV threshold.

What type of output capacitor is required?

The MIC5159 is stable with ceramic output capacitors. The specific value depends on the gate charge of the external MOSFET used in the design.