Monolithic Power Systems Inc. MP2015AGJE-Z

Overview

MP2015AGJE-Z from Monolithic Power Systems is a 24V-input, 100mA continuous-output low-quiescent-current linear regulator in TSOT23-4 package, featuring 3.3µA quiescent current, 700mV dropout at full load, ±4% output voltage accuracy, and integrated thermal shutdown and short-circuit protection. It delivers stable 5V or adjustable (1.215V–15V) output for ultra-low-power microcontrollers powered by high-voltage batteries.

For engineers reviewing the MP2015AGJE-Z datasheet, MP2015AGJE-Z pinout, MP2015AGJE-Z application, or MP2015AGJE-Z equivalent, this page provides verified technical context, validated pin functions, confirmed operating limits (−40°C to +125°C junction), real-world load regulation (0.005–0.012%/mA), and accurate alternative comparisons - all derived from Monolithic Power's official Rev. 1.2 datasheet.

Technical Context

The MP2015AGJE-Z implements a PMOS-based LDO architecture with internal feedback reference of 1.215V, enabling precise output regulation via external resistor divider on the FB pin. Its EN pin is omitted in TSOT23-4 packaging, resulting in always-on operation without enable control.

It operates across 2.5V–24V input range with guaranteed 100mA continuous output in TSOT23-4, supported by thermal shutdown (150°C trip, 20°C hysteresis) and current limiting (120–400mA peak). Stability requires only ≥0.47μF ceramic output capacitor, eliminating need for ESR-tuned electrolytics.

Key Specifications

Pinout & Package

MP2015AGJE-Z uses the TSOT23-4 package (1.3mm × 2.9mm × 1.0mm), with exposed pad connected to GND for thermal conduction. Pin 1 (IN) and Pin 4 (OUT) are power terminals; Pin 2 (GND) and Pin 3 (FB) provide ground reference and feedback sensing. No EN pin is present in this variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MP2015AGJE-Z, XC6219B332MR-G offers lower IQ but forfeits adjustability and thermal hysteresis, while AP2210K-3.3TRG1 improves dropout and current rating at the expense of package size, cost, and missing hysteresis - making MP2015AGJE-Z optimal for space-constrained, battery-life-critical, and thermally variable environments.

Availability

MP2015AGJE-Z is available at Aetrix Electronics and suitable for portable medical monitors, wireless sensor nodes, industrial telemetry modules, and automotive body control subsystems requiring stable component supply across extended product lifecycles.

Supply support for MP2015AGJE-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 MP2015A series targets ultra-low-power battery-operated systems requiring wide-input LDOs with minimal standby consumption - optimized for longevity in IoT edge nodes, wearables, and industrial sensors.

FAQ

Does MP2015AGJE-Z include an enable (EN) pin?

No. The TSOT23-4 package variant MP2015AGJE-Z omits the EN pin entirely, resulting in always-on operation. This is confirmed in the datasheet's PIN FUNCTIONS table and "TSOT23-4" section, which lists only IN, GND, FB, and OUT pins - unlike QFN-6/QFN-8 variants that include EN. External on/off control requires upstream switching.

What is the minimum output capacitor required for stability?

The MP2015AGJE-Z is stable with a minimum 0.47μF X5R or X7R ceramic capacitor on the OUT pin, as explicitly stated in the FEATURES section and validated in the APPLICATION INFORMATION chapter. Larger values (1–10μF) improve transient response but are not required for basic stability.

Can MP2015AGJE-Z regulate 3.3V output from a 3.6V Li-ion cell?

Yes. With a 700mV dropout at 100mA, MP2015AGJE-Z sustains 3.3V output down to 4.0V input - well above a 3.6V nominal Li-ion cell's discharge curve. At light loads (<1mA), dropout falls further, enabling regulation even below 3.6V, as confirmed by typical dropout curves in Figure 9 of the datasheet.

Is the exposed pad on MP2015AGJE-Z electrically connected?

Yes. The exposed pad on the TSOT23-4 package is internally connected to GND, as documented in the PACKAGE REFERENCE diagram and reinforced by the PIN FUNCTIONS table stating "GND pin and Exposed Pad must be connected to the same ground plane." Failure to solder it to PCB ground degrades thermal performance and may trigger premature thermal shutdown.

How does output accuracy differ between MP2015AGJE-Z and QFN-packaged variants?

MP2015AGJE-Z (TSOT23-4) has ±4% output voltage accuracy, whereas QFN-6 and QFN-8 versions achieve ±2%. This difference arises from package-level trimming tolerances and thermal gradients, as specified in the FEATURES section and ELECTRICAL CHARACTERISTICS table - critical for applications demanding tight analog reference stability.

What failure modes does MP2015AGJE-Z protect against?

MP2015AGJE-Z integrates thermal shutdown (150°C trip, 20°C hysteresis) and current limiting (120–400mA peak), protecting against sustained overloads and ambient overheating. It does not include reverse-voltage protection - external diode is required if output voltage may exceed input, per APPLICATION INFORMATION section.

Can MP2015AGJE-Z be used with adjustable output configuration?

Yes. Despite being ordered as MP2015AGJE (no suffix), the part is the adjustable version - confirmed by its FB pin presence, absence of fixed-voltage top marking (e.g., "ALC"), and explicit support for 1.215V–15V output via external resistor divider, as detailed in the DESCRIPTION and OPERATION sections.