Monolithic Power Systems Inc. MP2002DD-LF-P

Overview

MP2002DD-LF-P from Monolithic Power Systems is a low-dropout linear regulator with adjustable output (0.5V–5V), 500mA load capability, 300mV dropout at full load, and integrated power-good open-collector output. It operates from 1.35V to 6.5V input and delivers stable regulation in battery-powered cellular phones and low-voltage portable systems.

For engineers reviewing the MP2002DD-LF-P datasheet, MP2002DD-LF-P pinout, MP2002DD-LF-P application, or MP2002DD-LF-P equivalent, key selection factors include its 0.5V feedback reference, 100μA ground current at light load, thermal/current protection, and compatibility with small ceramic capacitors for space-constrained designs.

Technical Context

The MP2002 uses a PNP pass transistor architecture to achieve ultra-low dropout and high PSRR in low-input-voltage applications. Its internal 0.5V feedback reference enables precise output setting via external resistors, and the open-collector PG pin asserts low when output drops >10% below regulation.

Thermal shutdown activates at 155°C and current limiting engages between 550mA–730mA. The device supports shutdown quiescent current as low as 6µA and maintains 2% reference accuracy across –40°C to +85°C ambient temperature.

Key Specifications

Pinout & Package

MP2002DD-LF-P is housed in an 8-pin QFN package measuring 2mm × 3mm with exposed thermal pad (Pin 6). The package supports efficient heat dissipation in compact layouts and requires soldering the exposed pad to a GND plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-dropout linear regulator applications.

Compared with XC6219B122MR-G and AP2204K-1.8TRG1, MP2002DD-LF-P uniquely combines 500mA output, 0.5V–5V adjustability, power-good monitoring, and sub-300mV dropout-making it the only viable choice for programmable, high-current, battery-sensitive LDO applications requiring system-level fault detection.

Availability

MP2002DD-LF-P is available at Aetrix Electronics and suitable for battery-powered modems, portable medical sensors, low-voltage microcontroller cores, and RF front-end biasing requiring stable component supply and long-term lifecycle support.

Supply support for MP2002DD-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 a focus on efficiency, integration, and thermal robustness.

The MP2002 belongs to MPS's ultra-low-voltage LDO product line, designed specifically for space- and power-constrained portable electronics requiring precise, low-noise, and thermally resilient regulation from near-dead-battery inputs.

FAQ

What is the minimum input voltage required for MP2002DD-LF-P to regulate a 1.2V output?

The MP2002DD-LF-P requires at least 1.5V input to sustain 1.2V output under 500mA load, based on its 290mV dropout specification. At lighter loads, regulation is possible down to 1.35V input due to reduced dropout voltage, but full-load operation mandates ≥1.49V input for 1.2V output.

Can MP2002DD-LF-P be used with ceramic output capacitors smaller than 4.7μF?

No-MPS specifies a minimum 4.7μF ceramic output capacitor for stability across all operating conditions. Using smaller values risks oscillation or degraded transient response, especially under step-load changes. The device is optimized for ≥4.7μF X5R/X7R ceramics with ≤100mΩ ESR.

How does the power-good (PG) pin behave during startup and dropout?

The PG pin remains high-impedance (open) until the output reaches 90% of its target voltage, then pulls low only if VOUT falls >10% below regulation. During startup, PG asserts high after ~100μs once VOUT stabilizes; during input brownout, PG transitions low before output collapses fully, enabling early system warning.

Is MP2002DD-LF-P compatible with lead-free reflow profiles?

Yes-MP2002DD-LF-P is RoHS-compliant and qualified for standard lead-free reflow per J-STD-020. Its QFN package supports peak temperatures up to 260°C, and the exposed thermal pad must be fully soldered to ensure mechanical reliability and thermal performance.

Why is MP2002DD-LF-P marked "NOT RECOMMENDED FOR NEW DESIGNS"?

This designation reflects MPS's product lifecycle policy: newer alternatives like MP2013 or MPQ2013 offer improved specs (lower IQ, higher PSRR, smaller packages) and active support. MP2002DD-LF-P remains fully functional and available but lacks roadmap extension beyond current inventory.

What is the maximum allowable power dissipation for MP2002DD-LF-P at 60°C ambient?

With θJA = 55°C/W, maximum continuous power dissipation at TA = 60°C is (125°C − 60°C) / 55°C/W = 1.18W. Exceeding this causes thermal shutdown. For 500mA output at 1.2V with 2V input, power dissipation is (2V − 1.2V) × 0.5A = 0.4W - well within safe margin on a 4-layer board with proper thermal pad layout.