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

Overview

MP20041DGT-JS-LF-Z 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 and delivers precise 1.8V/2.5V outputs in a 2mm × 2mm TQFN8 package-designed for noise-sensitive RF and battery-powered portable systems.

For engineers reviewing the MP20041DGT-JS-LF-Z datasheet, MP20041DGT-JS-LF-Z pinout, MP20041DGT-JS-LF-Z application, or MP20041DGT-JS-LF-Z equivalent, key selection criteria include dual independent enable control, sub-100mV dropout at 100mA, thermal shutdown at 140°C, and guaranteed 1% output voltage accuracy across –40°C to +85°C.

Technical Context

The MP20041 integrates two independent PMOS-based LDOs with separate EN1/EN2 pins enabling per-channel power sequencing and zero-load quiescent current of 114μA (both on) or 0.03μA (both off). Each regulator features internal current limiting (525mA short-circuit limit) and thermal shutdown with 10°C hysteresis.

Its architecture supports fast transient response with minimal external capacitance (0.47μF–10μF ceramic output caps, ESR < 1.2Ω), and achieves 73mV dropout at 100mA load while maintaining 11μVRMS noise performance without requiring noise-reduction capacitors.

Key Specifications

Pinout & Package

The MP20041DGT-JS-LF-Z is housed in a thermally enhanced 2mm × 2mm TQFN8 package with exposed thermal pad (pin 5 = GND). Pin 1 is IN; pins 2 and 3 are independent active-high enables (EN1, EN2); pins 7 and 8 are regulated outputs (OUT2, OUT1); pins 4 and 6 are no-connect; pin 5 is common ground.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC6210B182MR-G and RT9080L-1825, MP20041DGT-JS-LF-Z uniquely delivers dual independent enables, 300mA per channel, 11μVRMS noise, and 72dB PSRR in a single 2mm × 2mm package-making it optimal for space-constrained, noise-sensitive, and power-sequenced applications.

Availability

MP20041DGT-JS-LF-Z is available at Aetrix Electronics and suitable for wireless LAN transceivers, battery-powered medical sensors, and handheld industrial scanners requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP20041DGT-JS-LF-Z 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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP20041 belongs to MPS's ultra-low-noise LDO product line, engineered specifically for noise-critical RF, precision analog, and battery-operated portable electronics demanding high PSRR, low dropout, and minimal quiescent current.

FAQ

What are the exact output voltages programmed in MP20041DGT-JS-LF-Z?

The MP20041DGT-JS-LF-Z is factory-configured with 1.8V on OUT1 (pin 8) and 2.5V on OUT2 (pin 7), confirmed by the "JS" top marking code per MPS's Output Voltage Selector Guide. These values are trimmed to ±1% accuracy across –40°C to +85°C and do not require external feedback resistors.

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

No-MP20041DGT-JS-LF-Z has a specified minimum input voltage of 2.5V per Absolute Maximum Ratings and Recommended Operating Conditions. Operation below this threshold may cause output regulation failure, increased dropout, or undefined enable logic behavior due to insufficient gate drive for the internal PMOS pass devices.

Is an external Schottky diode required to prevent reverse current?

Yes-when VOUT exceeds VIN by more than ~0.3V (e.g., during hot-swap or output pre-bias conditions), the internal PMOS body diode becomes forward-biased. MPS explicitly recommends adding an external Schottky diode (anode to OUT, cathode to IN) to block reverse current and avoid misoperation or damage.

What is the maximum allowable power dissipation at 85°C ambient?

Using θJA = 80°C/W and TJ(MAX) = 125°C, maximum continuous power dissipation at TA = 85°C is PD(MAX) = (125°C − 85°C) / 80°C/W = 0.5W. This assumes standard JEDEC 4-layer board layout; actual dissipation must stay below this limit to avoid thermal shutdown.

Does MP20041DGT-JS-LF-Z require output capacitors with specific ESR ranges?

Yes-the device is optimized for ceramic output capacitors with ESR < 1.2Ω and values between 0.47μF and 10μF. Capacitors outside this ESR range risk instability or degraded transient response; tantalum types are acceptable only if ESR falls within specification and capacitance remains ≥0.47μF.

How does the thermal shutdown hysteresis affect system recovery?

When junction temperature reaches 140°C, the device shuts down; it automatically resumes regulation when temperature drops to 130°C (10°C hysteresis). This prevents oscillatory cycling during overload and allows safe cooldown before re-enabling-no external reset or intervention is needed.

Are pins 4 and 6 internally connected or electrically isolated?

Pins 4 and 6 are designated NC (No Connect) in the official MPS datasheet and package drawing-they are not bonded to the die and must remain unconnected on the PCB. Routing traces or applying solder to these pins risks mechanical stress or unintended coupling in high-density layouts.