Monolithic Power Systems Inc. MP2721GRH-0000-Z

Overview

MP2721GRH-0000-Z from Monolithic Power Systems is a 5A, single-cell Li-ion/Li-polymer buck charger IC with I²C control, NVDC power path architecture, ±0.5% battery voltage regulation, and integrated 15mΩ battery MOSFET - deployed in portable POS terminals, Bluetooth headphones, and wearable cameras for fast, thermally managed charging.

For engineers reviewing the MP2721GRH-0000-Z datasheet, MP2721GRH-0000-Z pinout, MP2721GRH-0000-Z application, or MP2721GRH-0000-Z equivalent, key selection considerations include I²C-programmable charge current (80mA–5A), JEITA-compliant dual NTC monitoring, shipping mode discharge current (8.5μA), and boost-mode OTG capability up to 3A at 5.15V.

Technical Context

The MP2721 implements a monolithic NVDC architecture with integrated high-side (25mΩ), low-side (25mΩ), reverse-blocking (15mΩ), and battery (14mΩ) MOSFETs, enabling seamless system power sourcing from input or battery without voltage droop. Its dual NTC interface supports fully programmable JEITA thermal windows (0°C–60°C) with independent cold/cool/warm/hot thresholds and hysteresis.

It features a configurable 750kHz–1.5MHz synchronous buck converter, an I²C-accessible boost converter (5.08–5.22V output, 3A OCP), and hardware-based safety timers including pre-charge, fast-charge, watchdog, and auto-recharge deglitch (100ms). Input source detection complies with USB BC1.2 and supports three non-standard adapter voltage windows (1.2V, 2.0V, 2.7V).

Key Specifications

Pinout & Package

MP2721GRH-0000-Z is housed in a thermally enhanced QFN-22 package (2.5mm × 3.5mm, 0.5mm pitch) with exposed thermal pad. Pin functions are validated per MPS MP2721 Rev. 1.1 datasheet (Jan 2023), including dedicated NTC, USB D+/D−, STAT/IB dual-function, and PG/NTC2 multiplexed pins.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar single-cell buck charger applications.

Compared with BQ25618RTWR and IP2326, MP2721GRH-0000-Z uniquely combines 5A I²C-programmable charging, dual NTC JEITA control, integrated 3A boost, and 8.5μA shipping mode - making it optimal for upgradable, thermally demanding, and OTG-enabled portable electronics.

Availability

MP2721GRH-0000-Z is available at Aetrix Electronics and suitable for Bluetooth headphones, POS terminals, and portable cameras requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP2721GRH-0000-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, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP2721 belongs to MPS's battery management product line, engineered specifically for compact, high-efficiency single-cell Li-ion charging in consumer wearables and portable electronics - emphasizing thermal safety, firmware flexibility, and system-level power path integration.

FAQ

What is the maximum supported battery voltage regulation accuracy?

The MP2721GRH-0000-Z achieves ±0.5% battery voltage regulation accuracy at both 4.200V and 4.350V setpoints, verified across -40°C to +85°C ambient and confirmed in the Electrical Characteristics table (page 7 of Rev. 1.1 datasheet). This precision is maintained using remote battery sensing (BATTSNS) to compensate for PCB trace resistance.

Does MP2721GRH-0000-Z support USB On-The-Go (OTG) functionality?

Yes - the MP2721 integrates a configurable boost converter supporting USB OTG. It delivers 5.08–5.22V at 5.15V nominal with up to 3A output current limit, over-current protection, and ability to drive capacitive loads up to 2mF - all controllable via I²C registers without external components.

How is thermal regulation implemented, and what temperature ranges are supported?

Thermal regulation is implemented via programmable die temperature threshold (60°C–120°C) and comprehensive JEITA profiling using two NTC inputs. Cold (0°C), cool (10°C), warm (45°C), and hot (60°C) thresholds are individually configurable with 1.4% hysteresis, enabling precise, application-specific charge enable/disable behavior.

What is the purpose of the STAT/IB pin, and how is it configured?

The STAT/IB pin serves dual roles: as an open-drain charge status indicator (low = charging, high = complete/idle, 1Hz blink = fault) or as an analog battery current monitor (IB mode). In IB mode, it sources 1.1–22.1μA per mA of battery current - scaled linearly - requiring an external resistor to AGND to convert to measurable voltage.

Can MP2721GRH-0000-Z operate without an I²C host controller?

No - I²C is mandatory for functional operation. All critical parameters (charge current, input limit, JEITA thresholds, boost settings) are configured exclusively via I²C registers. The device does not support pin-strapped defaults or autonomous operation; absence of I²C communication leaves the charger disabled.

What is the significance of the "-Z" suffix in MP2721GRH-0000-Z?

The "-Z" suffix indicates tape-and-reel packaging per MPS ordering conventions. MP2721GRH-0000-Z is the standard production version supplied in 3,000-unit reels; the base part number MP2721GRH-0000 is identical electrically but denotes non-reel (e.g., cut-tape or tray) packaging options.

How does the NVDC architecture improve system reliability compared to conventional architectures?

NVDC eliminates system voltage droop during input removal by maintaining SYS rail directly from battery through the low-R_DS(on) BATTFET (14mΩ). Unlike traditional architectures that disconnect battery during charging, NVDC ensures uninterrupted power to the host - critical for POS terminals and cameras where sudden shutdown corrupts data or interrupts transactions.