Monolithic Power Systems Inc. MP2015AGQ-33-P

Overview

MP2015AGQ-33-P from Monolithic Power Systems is a fixed-output 3.3V, 150mA low-dropout linear regulator with 2.5V–24V input range, 3.3µA quiescent current, and 700mV dropout at full load-designed for battery-powered microcontrollers and portable instrumentation requiring stable low-power biasing.

For engineers reviewing the MP2015AGQ-33-P datasheet, MP2015AGQ-33-P pinout, MP2015AGQ-33-P application, or MP2015AGQ-33-P equivalent, this device delivers verified ±2% output accuracy in QFN-8 package, supports ceramic capacitors ≥0.47µF, and integrates thermal shutdown and current limiting for robust operation in space-constrained embedded systems.

Technical Context

The MP2015AGQ-33-P implements a PMOS pass transistor architecture enabling ultra-low quiescent current (3.3µA typical) and high PSRR (58dB @100Hz), critical for noise-sensitive analog and mixed-signal circuits. Its internal feedback reference is trimmed to 1.215V with ±0.024V tolerance across temperature.

It features active EN control with 1.48V rising threshold and 1.26V falling hysteresis, enabling precise power sequencing. The QFN-8 (3mm×3mm) package includes an exposed thermal pad tied to GND, delivering θJA = 48°C/W for sustained 150mA operation at ambient up to +85°C.

Key Specifications

Pinout & Package

MP2015AGQ-33-P is housed in a thermally enhanced QFN-8 (3mm × 3mm) package with exposed thermal pad (Pin 1 ID marked, pad connected to GND). This package enables compact layout and efficient heat dissipation in high-density PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-quiescent-current LDO applications.

Compared with MP2015AGQ-33-P, the XC6210B332MR-G saves board area but sacrifices system-level control and safety; the ADM7172ACPZ-3.3-R7 achieves lower dropout at the cost of 57× higher IQ-making MP2015AGQ-33-P optimal for long-life battery systems needing both precision and protection.

Availability

MP2015AGQ-33-P is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial data loggers, and portable medical monitors requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.

Supply support for MP2015AGQ-33-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 design centers across Asia and North America and global manufacturing partnerships.

The MP2015A series targets ultra-low-power battery-operated systems, emphasizing minimal quiescent current, wide input range, and integrated protection-optimized for next-generation IoT edge devices and portable instrumentation.

FAQ

What is the minimum input voltage required for MP2015AGQ-33-P to regulate 3.3V at 150mA?

The minimum input voltage is 4.0V, derived from the 700mV dropout specification at 150mA load. Below this, the device enters dropout mode and output voltage drops linearly with input. Operation is guaranteed from 2.5V input, but full 150mA load capability requires VIN ≥ VOUT + VDROPOUT = 3.3V + 0.7V = 4.0V.

Can MP2015AGQ-33-P operate without an enable signal connected?

Yes. Leaving the EN pin unconnected or tying it directly to IN enables automatic startup. The EN pin has internal pull-up; no external resistor is needed. However, for controlled power sequencing, connect EN to a microcontroller GPIO or dedicated power manager with 1.48V rising threshold compatibility.

Is the exposed thermal pad on the QFN-8 package electrically connected internally?

Yes-the exposed pad is internally connected to GND and must be soldered to a PCB ground plane. It serves as both the primary thermal path (contributing to θJA = 48°C/W) and a low-inductance ground return. Failure to connect it degrades thermal performance and may trigger premature thermal shutdown under load.

What output capacitor value is required for stability with MP2015AGQ-33-P?

A minimum 0.47µF X5R or X7R ceramic capacitor is required for stability. For improved transient response and noise suppression-especially in ADC or RF applications-use 1µF to 10µF. Avoid Y5V dielectrics due to severe capacitance loss over temperature and bias.

Does MP2015AGQ-33-P include reverse-voltage protection?

No. The internal PMOS pass transistor contains a body diode that conducts from OUT to IN if VOUT > VIN (e.g., during backup battery hold-up). To prevent destructive reverse current, add an external Schottky diode (anode to IN, cathode to VIN supply) or ideal diode controller in series with the input path.

How does load regulation performance compare between MP2015AGQ-33-P and standard LDOs?

MP2015AGQ-33-P achieves 0.005–0.015%/mA load regulation-significantly tighter than typical LDOs (0.1–0.5%/mA). This means output voltage changes only ~150µV per mA of load shift, ensuring stable MCU core voltage and precise ADC reference even during dynamic processing loads.

What is the maximum ambient temperature for continuous 150mA operation in still air?

At TA = +85°C, the QFN-8 package's θJA = 48°C/W allows 150mA operation with junction temperature TJ = TA + (PD × θJA). With PD ≈ (4.0V − 3.3V) × 0.15A = 105mW, TJ = 85°C + (0.105W × 48°C/W) ≈ 90°C-well below the 125°C max rating. Derating is required above +85°C ambient.