Monolithic Power Systems Inc. MP2672AGD-0000-Z

Overview

MP2672AGD-0000-Z from Monolithic Power Systems is a 2-cell Li-ion/Li-polymer boost switching charger IC with integrated cell balancing, NVDC power path management, and dual-mode (standalone/I²C) configuration. It delivers up to 2A charge current at 8.4V–8.8V battery regulation with 0.5% accuracy, operates from 4.0V–5.75V input, and supports JEITA-compliant NTC temperature monitoring for portable POS terminals and Bluetooth speakers.

For engineers reviewing the MP2672AGD-0000-Z datasheet, MP2672AGD-0000-Z pinout, MP2672AGD-0000-Z application, or MP2672AGD-0000-Z equivalent, key selection considerations include its QFN-18 package thermal performance (θJA = 70°C/W), I²C-configurable safety timers (up to 20 hours), and hardware-selectable charge voltage thresholds (8.4V–8.8V) in standalone mode.

Technical Context

The MP2672A implements a synchronous boost topology with integrated high-side (RON_Q2 = 28–40 mΩ) and low-side (RON_Q1 = 54–70 mΩ) MOSFETs, operating at 1.1–1.44 MHz switching frequency. Its NVDC architecture separates system (SYS) and battery (BATT) power paths via an internal linear FET (RON_Q3 = 22–40 mΩ), enabling system boot before battery charging.

Cell balancing is implemented using dedicated high-side/low-side balance FETs (RON_BHS = 2.1 Ω, RON_BLS = 1.3 Ω) triggered when inter-cell voltage mismatch exceeds 50–70 mV. Charge sequencing includes preconditioning (VBATT_PRE = 6.25–6.55 V), constant-current (ICC = 0.9–2.2 A), and constant-voltage phases with ±0.5% regulation accuracy and 450 mV recharge threshold.

Key Specifications

Pinout & Package

The MP2672AGD-0000-Z is housed in a thermally enhanced QFN-18 (2mm × 3mm, 0.5mm pitch) package with exposed thermal pad (PGND-connected) for efficient heat dissipation in space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-cell Li-ion boost charging applications.

Compared with BQ25895RTWR and ISL9238HRZ-T, the MP2672AGD-0000-Z uniquely integrates cell balancing, NVDC power path, and JEITA-compliant NTC monitoring in a 2mm×3mm QFN-enabling smaller PCB area, faster system boot, and safer 2S charging without external components.

Availability

MP2672AGD-0000-Z is available at Aetrix Electronics and suitable for portable handheld solutions, point-of-sale machines, and Bluetooth speakers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP2672AGD-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-efficiency power management ICs, with design centers in the US, China, and Taiwan, and global distribution through authorized partners.

The MP2672A belongs to MPS's battery charger product line, engineered specifically for compact, high-density portable electronics requiring integrated 2S Li-ion charging, cell balancing, and intelligent thermal management without external support components.

FAQ

What is the function of the MID pin?

The MID pin monitors the midpoint voltage between two series-connected Li-ion cells and provides a dedicated current path for active cell balancing. When enabled, it allows the internal balance FETs to equalize cell voltages if mismatch exceeds 50–70 mV, preventing overvoltage on either cell during charging.

How does the NVDC power structure improve system reliability?

The NVDC architecture ensures the SYS output powers the host system immediately upon input connection-even with a 0V battery-by regulating SYS to a minimum voltage (e.g., 6.7V) while simultaneously charging the battery through the internal linear FET. This eliminates system brownouts during battery insertion or deep discharge recovery.

Can the MP2672AGD-0000-Z operate without an I²C host controller?

Yes. In standalone mode, all critical parameters-including charge voltage (8.4V–8.8V), pre-charge threshold, and safety timers-are configured via external resistors on CV, ISET, and VLIM pins. No microcontroller or firmware is required for basic operation.

What is the maximum sustainable input voltage, and how is overvoltage protection implemented?

The absolute maximum input voltage is 12V, with sustainable operation up to 14V. Input overvoltage protection triggers at 5.75–6.25V (VIN_OVLO), disabling the boost converter and pulling ACOK low. Hysteresis of 150 mV prevents oscillation near the threshold.

How does the thermal regulation loop interact with the 2A charge current specification?

The thermal regulation loop dynamically reduces charge current when junction temperature exceeds the thermal loop threshold (typically ~125°C), preventing thermal shutdown. The 2A rating assumes adequate PCB copper area (4-layer, 1 oz) and airflow; actual sustained current depends on θJA (70°C/W) and ambient conditions.

Is the MP2672AGD-0000-Z compatible with lithium-polymer batteries?

Yes. The MP2672A supports both Li-ion and Li-polymer chemistries, as confirmed in the datasheet title and electrical specifications. Its programmable charge voltage (8.4V–8.8V) and JEITA temperature profiles accommodate the voltage and thermal characteristics of both battery types.

What is the purpose of the STAT pin in standalone mode?

In standalone mode, the STAT pin is an open-drain output that signals charge status: low during pre-charge, high-impedance during constant-current/constant-voltage, and pulsed during termination/recharge. It drives LEDs directly (with pull-up) for user-visible charging indication without MCU involvement.