Monolithic Power Systems Inc. MP2759GQ-0000-P

Overview

MP2759GQ-0000-P from Monolithic Power Systems is a 36V input, up to 3A switching battery charger IC for 1S–6S Li-ion/Li-polymer packs, featuring power path management, JEITA-compliant thermal monitoring, and 0.5% battery voltage regulation accuracy. It operates across -40°C to +125°C, supports programmable cell count (1–6) and regulation voltages (3.6V–4.4V/cell), and integrates reverse-blocking FET, internal loop compensation, and dual-loop input current/voltage limiting for industrial portable equipment.

For engineers reviewing the MP2759GQ-0000-P datasheet, MP2759GQ-0000-P pinout, MP2759GQ-0000-P application, or MP2759GQ-0000-P equivalent, this device delivers precise multi-cell charging control with integrated safety timers, battery OVP, thermal fault handling, and configurable charge profiles - critical for medical tools, power tools, robotics, and wireless audio systems requiring robust, field-deployable battery management.

Technical Context

The MP2759GQ-0000-P implements a synchronous buck-boost topology with integrated high-side (43 mΩ), low-side (63 mΩ), and reverse-blocking (43 mΩ) MOSFETs, enabling efficient charging across wide VIN (4–36V) and VBAT (up to 26.4V) ranges. Its four-phase charge algorithm (trickle → pre-charge → CC → CV) is governed by analog loops for battery voltage, charge current, input current, and input voltage - each with independent reference thresholds and hysteresis.

Power path management uses OR-selection logic to prioritize system load over battery charging when input current is constrained; JEITA compliance is implemented via NTC voltage-ratio sensing against four fixed thresholds (cold/cool/warm/hot), dynamically scaling charge current and regulation voltage without external microcontroller intervention.

Key Specifications

Pinout & Package

MP2759GQ-0000-P is housed in a thermally enhanced QFN-19 (3mm × 3mm, 0.5mm pitch) package with exposed thermal pad, supporting high-power dissipation (θJA = 50°C/W) in compact industrial PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-cell switching charger applications.

Compared with BQ25792RTWR and LTC4162EUFD-42#PBF, MP2759GQ-0000-P delivers best-in-class analog integration (integrated reverse FET, dual-loop input regulation, single-resistor cell/voltage configuration) at lower pin count and cost - making it optimal for industrial and consumer portable equipment where USB PD or digital telemetry are unnecessary.

Availability

MP2759GQ-0000-P is available at Aetrix Electronics and suitable for industrial medical equipment, power tools, and robotic vacuum cleaners requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP2759GQ-0000-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 power management ICs, with design focus on efficiency, integration, and reliability for industrial, automotive, and computing markets.

The MP2759 belongs to MPS's high-voltage battery charger product line, engineered specifically for ruggedized portable equipment demanding wide-input switching charge control, autonomous thermal management, and minimal external component count.

FAQ

What battery chemistries does MP2759GQ-0000-P support?

MP2759GQ-0000-P supports Li-ion and Li-polymer battery chemistries exclusively. It is configured for 1S–6S series configurations with regulation voltages ranging from 3.6V to 4.4V per cell, including OTP-selectable 4.1V/4.15V options. It does not support NiMH, lead-acid, or LiFePO₄ chemistries due to fixed voltage thresholds and JEITA profile alignment.

How is the 6-cell configuration enabled on the MP2759GQ-0000-P?

The 6-cell configuration is set by pulling the CELL pin to VCC (5V) via a direct connection or high-value resistor. This forces the internal decoder to select 6S mode, scaling all battery voltage thresholds (VBATT_TC, VBATT_PRE, VBATT_REG, VRECH) by a factor of six - e.g., 4.2V/cell becomes 25.2V total regulation voltage.

Does MP2759GQ-0000-P require external MOSFETs for reverse current blocking?

No. MP2759GQ-0000-P integrates a dedicated reverse-blocking FET (RON = 43 mΩ) between BATT and system load, eliminating the need for external back-to-back MOSFETs or Schottky diodes. This reduces solution size, conduction loss, and BOM cost while ensuring bidirectional isolation during input removal.

What is the function of the VLIM pin beyond input voltage regulation?

When the VLIM pin voltage falls below 0.8V, the MP2759GQ-0000-P disables charging entirely - acting as a hardware enable/disable control. This allows external logic (e.g., MCU GPIO or comparator output) to force charger shutdown independently of input voltage level, useful for system-level thermal or fault interlocks.

Can MP2759GQ-0000-P operate without an NTC thermistor?

Yes, but with reduced safety. If the NTC pin is left floating or tied to AGND, JEITA thermal protection is disabled and charging proceeds regardless of temperature. However, battery over-voltage protection, thermal shutdown (150°C), and safety timer remain active. For certified applications (IEC 62368-1), NTC connection is mandatory.

What is the minimum recommended input capacitance for MP2759GQ-0000-P?

A minimum 10µF X5R/X7R ceramic capacitor is required between IN and PGND, placed as close as possible to the IN and PGND pins. For 36V-rated systems, a 47µF/50V bulk capacitor is recommended in parallel to handle high-frequency ripple and transient energy during switching transitions.

How does the MP2759GQ-0000-P handle input source removal during charging?

Upon input removal, the MP2759GQ-0000-P immediately disables the power stage and enters low-quiescent mode (IBATT_SHDN ≤ 10 µA). The STAT pin signals "standby" state, and the integrated reverse-blocking FET isolates the battery from the input path. When input is restored, the ACOK pin asserts after 170ms, restarting the full charge sequence.