MP20042DG-MG-LF-Z

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

The MP20042DG-MG-LF-Z is a dual-channel, low-noise linear regulator from Monolithic Power Systems. It integrates two LDOs in a compact 2mm x 2mm TQFN-8 package. The device operates with an input voltage range of 2.5V to 6.0V and provides adjustable output voltages between 1.2V and 5.0V with 1% accuracy. Each channel delivers up to 200mA of load current. Key electrical specifications include a power supply rejection ratio (PSRR) of 72dB at 1kHz and ultra-low output noise of 11μVRMS without requiring external bypass capacitors. The quiescent current is 114µA when both channels are active.

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

• Integrates two independent low-dropout regulators within a miniature footprint for space-constrained designs
• Delivers ultra-low output noise performance without the need for additional noise-bypass capacitors
• Features high power supply rejection ratio to maintain stable outputs under noisy conditions
• Includes individual enable pins for precise control of each output channel

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

• Battery-powered portable electronic devices requiring efficient power management
• Low-noise analog circuits sensitive to power supply ripple
• Systems utilizing AMD Xilinx Zynq SoCs or similar mixed-signal processors
• Compact consumer electronics where board space is limited

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

Verify the specific suffix MG against official datasheets to confirm package and temperature grade details. Confirm RoHS compliance status through manufacturer documentation. Ensure design compatibility with the 2.5V to 6.0V input range. Check for end-of-life notices as this part may be marked not recommended for new designs; consult MPS for current production status and alternative recommendations.

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

Select this component when dual isolated rails are needed from a single low-voltage source. The 200mA per channel rating suits moderate load applications. The absence of required bypass capacitors simplifies bill of materials. Consider the 114µA quiescent current impact on battery life. Verify that the 72dB PSRR meets system noise requirements at 1kHz frequency.

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

This device belongs to the MP20042 series of dual LDOs. It shares architectural similarities with the MP20041 but offers lower current capability. The MP20042 is designed for applications prioritizing noise performance and size over high-current delivery. It complements MPS's portfolio of PMIC solutions for complex system-on-chip power distribution.

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

The MP20041 is documented as an alternative for new designs, offering 300mA per channel. Verify pin-to-pin compatibility before substitution. Review updated electrical characteristics such as PSRR and noise levels. Confirm availability and lead times for the replacement part.