Monolithic Power Systems Inc. MP2002AGD-Z

Overview

MP2002AGD-Z from Monolithic Power Systems is a low-dropout linear regulator IC designed for ultra-low-voltage, low-quiescent-current power management in space-constrained portable electronics. It operates from 1.35V to 6.5V input, delivers up to 500mA output current, features 300mV dropout at full load, 0.5V feedback reference, and open-drain power-good (PG) monitoring - enabling precise voltage supervision in battery-powered cellular phones and wireless modems.

For engineers reviewing the MP2002AGD-Z datasheet, MP2002AGD-Z pinout, MP2002AGD-Z application, or MP2002AGD-Z equivalent, key selection criteria include its 7µA shutdown current, 2% FB reference accuracy, thermal/current protection, QFN-8 (2mm×3mm) package footprint, and adjustable 0.5V–5V output via external resistor divider.

Technical Context

The MP2002AGD-Z implements a PNP-based LDO architecture with internal reference regulation, enabling stable operation down to 1.35V input while maintaining tight load regulation (0.001%/mA) and high PSRR for noise-sensitive RF subsystems. Its feedback loop references a precision 0.5V bandgap threshold, allowing accurate output setting across temperature.

Power sequencing is supported via active-high EN pin (1.2V turn-on threshold) and open-drain PG output that asserts low when VOUT drops >10% below regulation. Thermal shutdown triggers at 155°C and current limit activates between 550mA–730mA, ensuring robust fault handling without external circuitry.

Key Specifications

Pinout & Package

MP2002AGD-Z is housed in an 8-pin QFN package measuring 2mm × 3mm with exposed thermal pad (Pin 6), optimized for compact PCB layouts and efficient heat dissipation in handheld devices.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-input-voltage LDO regulator applications.

Compared with XC6210B122MR-G and ADM7172ACPZ-R7, MP2002AGD-Z uniquely balances ultra-low input voltage (1.35V), 500mA capability, PG/EN control, and QFN-8 size - making it optimal for battery-constrained, sequenced, and adjustable-rail designs where headroom and intelligence matter.

Availability

MP2002AGD-Z is available at Aetrix Electronics and suitable for cellular phone baseband power, wireless modem core supply, and wearable sensor hub applications requiring stable component supply, consistent tape-and-reel packaging (5000 pcs/reel), and long-term lifecycle support.

Supply support for MP2002AGD-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 power management ICs, including DC/DC converters, LDOs, LED drivers, and motor drivers - with emphasis on integration, efficiency, and miniaturization.

The MP2002A product line targets ultra-low-voltage, low-IQ linear regulation for portable and battery-operated systems, prioritizing minimal dropout, high PSRR, and intelligent supervision (EN/PG) in sub-3mm² packages.

FAQ

What is the minimum input voltage required for MP2002AGD-Z to regulate a 1.2V output?

The MP2002AGD-Z requires a minimum input of 1.35V across all operating conditions. For a 1.2V output, this yields only 150mV headroom - sufficient due to its 290mV dropout at 500mA, but operation is limited to light loads (<100mA) at this edge case. Full 500mA capability begins at VIN ≥ 1.49V.

Can MP2002AGD-Z be used without the PG pin connected?

Yes. The PG pin is optional and may be left floating or omitted from the schematic. However, doing so forfeits power-good monitoring and system-level fault detection. If unused, ensure no unintended parasitic pull-up exists, as PG is open-drain and will not affect regulation when disconnected.

What capacitor values and types are mandatory for stable operation?

A minimum 2.2µF X5R/X7R ceramic capacitor is required between IN and GND, and a minimum 4.7µF ceramic capacitor between OUT and GND. Both must be placed within 2mm of their respective pins. Tantalum or electrolytic capacitors are not recommended due to ESR and aging effects that may compromise stability.

How does the EN pin behave during power-up and brownout conditions?

The EN pin has hysteresis-free thresholds: regulator turns on when EN rises above 1.2V and turns off when EN falls below 0.4V. During input brownout (VIN < 0.86V), PG is pulled high by external pull-up even if EN is high - indicating loss of input power before regulator disable, supporting safe system shutdown sequencing.

Is the exposed thermal pad (Pin 6) electrically connected to GND internally?

Yes. The exposed pad is internally tied to the GND net and serves as both the primary thermal conduction path and electrical ground connection. It must be soldered to a dedicated PCB GND plane with ≥4 thermal vias (0.3mm diameter) to meet θJA = 55°C/W spec and prevent thermal shutdown under sustained 500mA load.

Does MP2002AGD-Z support reverse polarity or reverse current protection?

No. The MP2002AGD-Z lacks internal reverse-voltage or reverse-current blocking. If reverse input polarity or back-driving from the output is possible in the system, external protection (e.g., series Schottky diode or ideal diode controller) must be added to prevent device damage.

What is the maximum allowable output capacitance?

No upper limit is specified, but stability is guaranteed only with 4.7µF–100µF ceramic capacitors. Larger values (>100µF) may degrade phase margin and cause overshoot or ringing during load transients; if needed, add a 1Ω damping resistor in series with the capacitor.