Monolithic Power Systems Inc. MP2759GQ-0000-Z

Overview

MP2759GQ-0000-Z from Monolithic Power Systems is a 36V input, 3A switching battery charger IC with integrated power path management for 1S–6S Li-ion/Li-polymer battery packs. It delivers 0.5% battery voltage regulation accuracy, supports JEITA-compliant thermal monitoring via NTC, and implements four-stage charging (trickle/pre/CC/CV) with input current and minimum input voltage limiting - used in industrial medical equipment and portable robotics.

For engineers reviewing the MP2759GQ-0000-Z datasheet, MP2759GQ-0000-Z pinout, MP2759GQ-0000-Z application, or MP2759GQ-0000-Z equivalent, key selection criteria include its 36V max input with 45V non-switching hold-off, programmable cell count (1–6S) and regulation voltage (3.6V–4.4V/cell), integrated reverse-blocking FET, and QFN-19 (3mm×3mm) package with thermal performance validated to 125°C junction temperature.

Technical Context

The MP2759GQ-0000-Z integrates a synchronous buck converter with internal high-side (43mΩ), low-side (63mΩ), and reverse-blocking (43mΩ) MOSFETs, enabling up to 3A charge current across 1–6-cell configurations. Its control architecture includes independent loops for battery voltage, charge current, input current, and input voltage regulation - each with dedicated feedback pins (ISET, ILIM, VLIM, VB, CELL) and internal loop compensation.

It implements JEITA-based thermal protection using four NTC voltage thresholds (cold/cool/warm/hot) to dynamically scale charge current and regulation voltage, plus robust safety features including 150°C thermal shutdown, 200mV/cell battery OVP with hysteresis, and a 20-hour charging safety timer that resets on auto-recharge or input reapplication.

Key Specifications

Pinout & Package

MP2759GQ-0000-Z is housed in a thermally enhanced QFN-19 (3mm × 3mm, 0.5mm pitch) package with exposed thermal pad. The package supports high-power dissipation (θJA = 50°C/W on 4-layer PCB) and requires solder paste stencil design per MPS layout guidelines.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar switching battery charger applications.

Compared with BQ25792RTWR and LTC4162EUFD-4-2, MP2759GQ-0000-Z offers superior integration for adapter-powered industrial tools and medical devices - combining 36V input tolerance, 6S scalability, JEITA thermal grading, and single-chip power path in a 3mm×3mm footprint without external FETs or PD controllers.

Availability

MP2759GQ-0000-Z is available at Aetrix Electronics and suitable for industrial medical equipment, power tools, robot vacuum cleaners, and wireless speakers requiring stable component supply across long-life product cycles.

Supply support for MP2759GQ-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 MP2759 belongs to MPS's high-voltage battery charger product line, engineered specifically for rugged industrial and portable equipment requiring wide-input, multi-cell, and thermally adaptive charging - not general-purpose consumer chargers.

FAQ

What battery chemistries does MP2759GQ-0000-Z support?

The MP2759GQ-0000-Z supports Li-ion and Li-polymer batteries with user-selectable regulation voltages from 3.6V to 4.4V per cell, configured via the VB pin resistor network. It also supports OTP-programmed variants for 4.1V vs. 4.15V/cell selection, enabling compatibility with both standard and high-voltage cobalt-based cells.

How is the 1S–6S cell count configured?

Cell count is set by connecting the CELL pin to AGND (1S), a resistor divider (2S–4S), or pulling up to VCC (6S), with specific resistance ranges defined in the datasheet. Each configuration scales trickle/pre-charge thresholds, CV regulation voltage, and recharge hysteresis proportionally to the selected cell count.

Does MP2759GQ-0000-Z require external MOSFETs?

No. The MP2759GQ-0000-Z integrates all three power MOSFETs: a 43mΩ high-side switch, a 63mΩ low-side switch, and a 43mΩ reverse-blocking FET. This eliminates external FETs, gate drivers, and associated passive components required by competing controllers.

What is the purpose of the VLIM pin?

The VLIM pin serves two functions: (1) it sets the minimum input voltage threshold (via resistor divider from IN to AGND) to prevent adapter brownout, and (2) pulling VLIM below 0.8V disables charging entirely - enabling hardware-controlled shutdown independent of EN logic.

How does JEITA thermal protection operate on this device?

JEITA operation uses four NTC voltage thresholds (cold/cool/warm/hot) derived from the ratio of NTC pin voltage to VCC. Within cool range, charge current drops to 50%; within warm range, regulation voltage reduces by 100mV/cell; outside cold/hot bounds, charging halts until temperature returns to valid range.

Is MP2759GQ-0000-Z RoHS and REACH compliant?

Yes. MP2759GQ-0000-Z is lead-free, halogen-free, and fully compliant with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Full compliance documentation is available on the MPS Quality Assurance website.

What is the maximum achievable efficiency?

At 24V input and 16.8V (4S) battery output with 3A charge current, the MP2759GQ-0000-Z achieves up to 96% peak efficiency. Efficiency remains >92% across 1A–3A loads and input voltages from 16V to 30V, as verified in the datasheet's Figure 10.