Monolithic Power Systems Inc. MP2650GV-0400-P

Overview

MP2650GV-0400-P from Monolithic Power Systems is a fully integrated I²C-controlled buck/boost battery charger IC for 4-cell Li-ion/Li-polymer packs (up to 16.8V), featuring NVDC power path management, USB OTG support up to 5V/3A, and integrated 5A power MOSFETs. It operates from 4V–21V input, delivers up to 45W total power, and enables system operation during battery depletion in portable computing and imaging devices.

For engineers reviewing the MP2650GV-0400-P datasheet, MP2650GV-0400-P pinout, MP2650GV-0400-P application, or MP2650GV-0400-P equivalent, key selection considerations include configurable 4-cell charge voltage (16.8V), thermal regulation at 120°C, IMVP8-compliant PSYS/IBM/IAM analog monitoring outputs, and QFN-30 package compatibility with high-density PCB layouts.

Technical Context

The MP2650 implements dual-mode synchronous buck-boost topology with integrated N-channel power FETs (Q1–Q5), enabling seamless transition between buck and boost charging based on VIN and cell count. Its NVDC architecture maintains regulated SYS voltage (e.g., 6.16V min for 2S) independent of battery state, allowing uninterrupted system operation even with zero-battery or battery-removed conditions.

Control is executed via a dedicated I²C interface (400kHz) with 16-bit register map supporting real-time configuration of charge current (up to 5A), input current limit (up to 5A), battery voltage regulation (16.8V for 4S), safety timer (12hrs), and OTG output (5V/3A). Fault reporting includes over-voltage (input/battery/system), thermal shutdown (150°C), and JEITA-compliant NTC temperature monitoring with four-zone thresholds.

Key Specifications

Pinout & Package

MP2650GV-0400-P is housed in a thermally enhanced QFN-30 (4mm × 5mm, 0.5mm pitch) package with exposed thermal pad. Pin numbering follows standard top-view layout with pins 1–30 arranged in two rows (1–15 top, 16–30 bottom).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BQ25792RTWR and ISL9241HRZ-T, MP2650GV-0400-P uniquely combines 4S-native charge voltage, integrated battery FET for true NVDC, IMVP8-compliant PSYS analog output, and PROCHOT signaling-making it optimal for space-constrained, high-performance portable computing platforms requiring guaranteed system uptime.

Availability

MP2650GV-0400-P is available at Aetrix Electronics and suitable for tablet power management, notebook battery subsystems, portable gimbal power systems, and Bluetooth speaker designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP2650GV-0400-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 over 20 years of expertise in DC/DC conversion, battery charging, and motor control solutions.

The MP2650 product line targets high-density portable electronics requiring integrated multi-cell charging, NVDC power path, and USB OTG functionality-designed specifically for tablets, notebooks, drones, and professional imaging equipment.

FAQ

What does the "-0400" suffix indicate in MP2650GV-0400-P?

The "-0400" suffix denotes factory-programmed configuration for 4-cell Li-ion battery packs, setting default charge voltage to 16.8V (4.2V/cell), pre-charge threshold to 6.42V, and SYS regulation to 6.2V. This eliminates need for I²C initialization in 4S applications and ensures immediate plug-and-play operation with correct safety margins.

How does NVDC power path management function in MP2650GV-0400-P?

NVDC maintains a tightly regulated SYS voltage (e.g., 6.2V ±50mV) independent of battery voltage. When battery is depleted or removed, the IC draws power directly from IN to SYS, allowing system load to operate continuously. During charging, it dynamically balances power between battery and SYS using internal FETs Q5 and Q1–Q4.

Can MP2650GV-0400-P support USB PD input sources?

Yes-its 4V–21V input range and 28V transient tolerance (20ns) fully support USB PD 3.0 sources delivering 9V, 15V, or 20V. The configurable VIN limit register (REG01h) allows clamping to 15V or 20V to match PD contract, while IIN_LIM registers enforce current limits aligned with PD power contracts (e.g., 3A @ 15V = 45W).

What is the role of the PSYS, IAM, and IBM pins in system design?

PSYS provides a current-source output proportional to total system power (100µA = 256 steps), IAM delivers 250mV/A input current sensing with 100mV offset, and IBM outputs 125mV/A (charge) or 62.5mV/A (discharge) battery current. These enable real-time IMVP8-compliant power telemetry without host ADC resources or calibration overhead.

Does MP2650GV-0400-P require external current-sense resistors?

No-MP2650GV-0400-P integrates high-side input current sensing (via IAP/IAN pins) and battery current sensing (via BATT pin), eliminating external shunt resistors for IIN and IBATT measurement. Only the 10mΩ RS1 resistor (per datasheet Figure 1) is needed for charge current regulation accuracy and safety limiting.

How is thermal regulation implemented, and what is its impact on charging performance?

Thermal regulation activates at 120°C junction temperature, dynamically reducing charge current to maintain safe die temperature. Unlike thermal shutdown (150°C), this feature sustains partial charging during high-ambient or high-power conditions-preserving runtime while preventing damage. Regulation recovery occurs at 100°C (20°C hysteresis).

What safety protections are hardware-enforced versus I²C-configurable?

Hardware-enforced protections include input OVP (24V), thermal shutdown (150°C), and SW node overvoltage (28V). I²C-configurable protections include battery OVP (140–520mV above regulation), charge timer (1–12hrs), JEITA temperature windows, and PROCHOT assertion thresholds for SYS UV, battery OC (>12A), and input OC (>8.2A).