Monolithic Power Systems Inc. MP20041DGT-JS-LF-P

Overview

MP20041DGT-JS-LF-P from Monolithic Power Systems is a dual-channel, ultra-low-noise, high-PSRR linear regulator with 300mA per channel output capability, 11μVRMS output noise (no bypass capacitor required), and 72dB PSRR at 10kHz. It operates from 2.5V to 6.0V input, delivers 1.2V–3.6V outputs in 100mV steps with ±1% accuracy, and uses internal PMOS pass devices for low dropout-73mV at 100mA-and 114μA quiescent current. It serves as a precision power source for RF-sensitive analog and mixed-signal circuits in portable wireless systems.

For engineers reviewing the MP20041DGT-JS-LF-P datasheet, MP20041DGT-JS-LF-P pinout, MP20041DGT-JS-LF-P application, or MP20041DGT-JS-LF-P equivalent, key selection criteria include dual independent enable control (EN1/EN2), thermal shutdown (140°C), current limit (525mA), fast load transient response with 1μF ceramic output capacitors, and TQFN8 package compatibility with space-constrained PCB layouts.

Technical Context

The MP20041 integrates two independent LDO regulators sharing a common input and ground, each with dedicated EN and OUT pins. Its PMOS pass transistor architecture enables near-zero dropout under light loads and eliminates reverse current flow without external diodes-though an external Schottky is recommended if VOUT > VIN.

Each channel features autonomous current limiting (525mA short-circuit limit) and thermal shutdown with 10°C hysteresis. The device achieves 72dB PSRR at 10kHz under 150mA load and maintains 11μVRMS integrated noise (100Hz–100kHz) across 10mA–100mA loads-performance sustained without noise-bypass capacitors due to internal filtering.

Key Specifications

Pinout & Package

MP20041DGT-JS-LF-P is housed in a 2mm × 2mm, 0.5mm pitch TQFN-8 package with exposed thermal pad (pin 5 = GND). The package supports high-density routing and efficient heat dissipation when soldered to a PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel LDO applications.

Compared with XC6216D182MR-G and ADM7172ACPZ-R7, MP20041DGT-JS-LF-P uniquely delivers dual independent 300mA LDOs in a 2mm×2mm footprint with integrated enable control, making it optimal for space-constrained, multi-rail battery-powered systems where PSRR and noise performance must be balanced with integration density.

Availability

MP20041DGT-JS-LF-P is available at Aetrix Electronics and suitable for cellular phones, battery-powered medical wearables, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP20041DGT-JS-LF-P includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with expertise in DC/DC converters, LDOs, motor drivers, and LED drivers for consumer, industrial, and automotive markets.

The MP20041 belongs to MPS's ultra-low-noise LDO product line, designed specifically for noise-sensitive applications such as RF transceivers, high-resolution data converters, and portable medical instrumentation where clean, sequenced, and efficient dual-rail regulation is critical.

FAQ

What output voltage options are available for MP20041DGT-JS-LF-P?

The MP20041DGT-JS-LF-P is a specific ordering variant with factory-programmed output voltages: VOUT1 = 1.8V and VOUT2 = 2.5V. Other combinations between 1.2V and 3.3V (in 100mV increments) are available via custom part numbers like MP20041DGT-MG-LF-Z (2.8V/1.8V) or MP20041DGT-SS-LF-Z (3.3V/3.3V), subject to minimum order quantities for non-standard versions.

Can MP20041DGT-JS-LF-P operate with input voltage below 2.5V?

No. The absolute minimum recommended input voltage is 2.5V per the datasheet's Recommended Operating Conditions. Operation below this violates specification and may cause output regulation failure or unpredictable enable behavior. For sub-2.5V inputs, alternative LDOs with lower VIN minima (e.g., TPS7A05) should be evaluated.

Is an external Schottky diode required for reverse-voltage protection?

An external Schottky diode is not mandatory but strongly recommended when VOUT could exceed VIN by more than ~0.3V (e.g., during hot-swap or battery swap events), as the internal PMOS body diode becomes forward-biased. The diode prevents reverse current flow that could damage upstream sources or disrupt system behavior.

How does the MP20041 handle simultaneous load transients on both channels?

Each channel responds independently to its own load step due to separate feedback loops and pass elements. Typical transient spikes remain under 50mV for 10mA→300mA steps with 1μF ceramic output capacitors. Cross-talk between channels is minimized by layout best practices-especially separating COUT1/COUT2 ground paths and using a solid GND plane.

What is the thermal resistance (θJA) of the TQFN8 package in standard PCB layout?

The datasheet specifies θJA = 80°C/W for the 2mm×2mm TQFN8 package mounted on a JEDEC-standard 4-layer board (JESD51-7). Actual θJA will improve with larger copper areas connected to the exposed GND pad-designers should allocate ≥100mm² of inner-layer ground copper beneath the package for optimal thermal performance.

Does MP20041DGT-JS-LF-P support power sequencing between the two outputs?

Yes-via independent EN1 and EN2 pins. By driving EN1 before EN2 (or vice versa) with controlled GPIO timing, designers can implement precise power-up/down sequencing (e.g., powering analog rails before digital cores). No external RC networks or supervisors are needed, reducing system complexity and component count.