Monolithic Power Systems Inc. MP2690GR-P

Overview

MP2690GR-P from Monolithic Power Systems is a highly integrated, switch-mode battery charger and boost converter IC for single-cell Li-ion/Li-polymer systems. It delivers up to 2.5A charge current and 2.1A boost output, integrates power-path management, 4-LED fuel gauge, torch control, USB port detection (DP1/DM1), and output signaling (DP2/DM2). It operates in charge, boost, and sleep modes - used in portable power banks requiring autonomous system power management without MCU intervention.

For engineers reviewing the MP2690GR-P datasheet, MP2690GR-P pinout, MP2690GR-P application, or MP2690GR-P equivalent, key selection considerations include programmable charge voltage (4.2V/4.35V/4.45V), dual USB data-line interface (input detection + output signaling), thermal regulation with 120°C foldback and 150°C shutdown, and integrated NTC-based battery temperature monitoring via VNTC/NTC pins.

Technical Context

The MP2690GR-P implements dual-path power management: an IN-to-SYS pass-through path (with OVP/OCP priority over charging) and a buck-boost switching regulator core. Its mode control logic autonomously transitions between charge, boost, and sleep based on VIN presence, PB button state, and VBATT level - no external controller required.

It features five closed-loop regulators: input current limit (ILIM), input voltage regulation (VREG = 4.65V), charge current (ISET), charge voltage (VB full accuracy ±0.5%), and junction temperature (thermal foldback at 120°C, shutdown at 150°C). USB BC1.2 compliance is implemented via DP1/DM1 detection and DP2/DM2 signaling with programmable DCP/SDP/divider/1.2V modes.

Key Specifications

Pinout & Package

MP2690GR-P is housed in a thermally enhanced 26-pin QFN package (4mm × 4mm, 0.5mm pitch) with exposed thermal pad (PGND-connected) for efficient heat dissipation in high-current charging/boost applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar all-in-one battery charger/booster applications.

Compared with BQ25895RTWR and IP2326, MP2690GR-P uniquely integrates USB BC1.2 input detection, output signaling, torch control, and NTC-based thermal management - enabling true single-IC power bank solutions without firmware dependency.

Availability

MP2690GR-P is available at Aetrix Electronics and suitable for power bank design, portable USB charger development, and smart battery pack integration requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for MP2690GR-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 analog and mixed-signal ICs for power management, motor drive, and automotive applications.

The MP2690 belongs to MPS's battery management IC product line, designed specifically for highly integrated, MCU-free power bank and portable charger applications requiring autonomous charge/boost mode switching and USB compliance.

FAQ

What is the maximum sustainable input voltage for MP2690GR-P?

The MP2690GR-P supports up to 14V absolute maximum input voltage (VIN to PGND), but its recommended operating input range is 4.65V to 6.0V. Input over-voltage protection triggers at 5.8–6.2V (typical 6.0V), disabling the IN-to-SYS path to protect internal circuitry and connected loads.

How does the MP2690GR-P handle battery temperature monitoring?

The MP2690GR-P uses a dedicated NTC interface: VNTC supplies a regulated bias voltage to an external NTC thermistor divider, while the NTC pin reads the resulting voltage. It implements JEITA-compliant thresholds - e.g., disables charging below 0°C (R_NTC = 66.2% of nominal) and above 50°C (35.7%) - with hysteresis to prevent oscillation.

Can MP2690GR-P operate without an external microcontroller?

Yes. MP2690GR-P is designed for MCU-free operation: push-button (PB) controls boost/torch, 4-LED outputs provide direct fuel gauge indication, USB DP1/DM1 detects input source type, and DP2/DM2 signals output port type - all handled autonomously by on-chip logic and state machines.

What is the purpose of the TC pin?

The TC (Torch Control) pin is an open-drain output that drives an external P-MOSFET for flashlight functionality. It activates when PB is pressed twice within one second; the internal latch maintains torch state until a second double-press or long press (>2.5s), enabling standalone lighting without software.

How does the MP2690GR-P manage power-path priority between input and battery?

The MP2690GR-P gives strict priority to the IN-to-SYS pass-through path: when VIN is present and valid (>VBATT + 300mV), it powers SYS directly through a 65mΩ NMOS switch, bypassing the battery. Only when VIN drops below this threshold does it transition to boost mode - ensuring zero system interruption during adapter plug/unplug events.

What are the supported charge voltage options and how are they selected?

MP2690GR-P supports three factory-trimmed charge voltages: 4.20V (VB floating), 4.35V (VB = GND), and 4.45V (VB = VCC), each with ±0.5% accuracy. Selection is hardware-configured via the VB pin - no register writes or firmware needed - enabling flexible support for standard, medium-, and high-voltage Li-ion chemistries.

Does MP2690GR-P support USB Battery Charging Specification v1.2?

Yes. MP2690GR-P fully complies with BC1.2: DP1/DM1 detect DCP/SDP/CDP input sources, while DP2/DM2 generate corresponding output signatures (e.g., DCP short, SDP 15kΩ pull-down, Divider 2.7V, 1.2V/1.2V mode) to enable optimal current draw from attached devices without enumeration delays.