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Monolithic Power Systems Inc. MP2651GVT-000A-Z
- Part No.:
- MP2651GVT-000A-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Battery Chargers
- Package:
- 30-PowerWFQFN
- Datasheet:
-
MP2651GVT-000A-Z.pdf
- Description:
- I2C-CONTROLLED 1~4S BUCK-BOOST C
- Quantity:
- Payment:
- Shipping:
Inventory:4,592
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Product details
Overview
MP2651GVT-000A-Z from Monolithic Power Systems is an I²C-controlled buck-boost battery charger IC for 1–4 series Li-ion/Li-polymer cells, supporting 4V–22V input and up to 6A charge current with ±0.5% voltage regulation accuracy, USB PD 3.0 source mode compliance, and integrated thermal regulation-used in multi-cell power banks requiring bidirectional power management.
For engineers reviewing the MP2651GVT-000A-Z datasheet, MP2651GVT-000A-Z pinout, MP2651GVT-000A-Z application, or MP2651GVT-000A-Z equivalent, key selection considerations include configurable 4V–21V source-mode output, 500kHz–1.2MHz switching frequency, I²C-adjustable input current limit (0–5.8A), battery-full voltage up to 4.67V/cell, and TQFN-30 package thermal performance.
Technical Context
The MP2651 implements a synchronous four-switch buck-boost topology enabling seamless transition between buck and boost operation as battery voltage crosses input voltage-critical for maintaining stable charging across varying cell counts and adapter conditions. It integrates dual current-sense paths (SRP/SRN for battery, IAP/IAN for input), analog monitoring via TS/IMON and VNTC pins, and a 10-bit ADC for real-time parameter acquisition in both charge and source modes.
Control logic executes four-phase charging (trickle → pre-charge → fast charge → constant voltage) with auto-recharge, configurable termination current (60–490mA), and JEITA-compliant temperature protection using NTC biasing at VNTC and threshold detection on TS/IMON. Source mode delivers regulated IN output (4V–21V, 20mV/step) with up to 6A discharge current (50mA/step) and output OVP/UVP protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 22V - supports wide-input adapters including USB PD and industrial supplies without external pre-regulation. |
| Charge Current Range | 0 to 6.35A - programmable in 50mA steps via I²C; enables flexible power delivery for 2S–4S battery packs. |
| Battery Regulation Accuracy | ±0.5% at 25°C - ensures precise full-charge cutoff (e.g., 8.40V ±42mV for 2S), reducing overcharge risk and extending cycle life. |
| Source Mode Output Range | 4V to 21V in 20mV steps - matches USB PD 3.0 fixed and programmable power supply (PPS) profiles for host negotiation. |
| Switching Frequency | 500kHz to 1.2MHz - adjustable via register; balances efficiency vs. size: higher fSW allows smaller inductors/capacitors. |
| Thermal Regulation Threshold | Configurable up to 120°C - dynamically reduces charge current before reaching 150°C shutdown, preserving continuous operation under load. |
| I²C/SMBus Interface | 1.8V/3.3V compatible - supports standard clock rates (10–400kHz); enables runtime reconfiguration of all critical parameters without hardware change. |
Pinout & Package
The MP2651GVT-000A-Z is housed in a thermally enhanced TQFN-30 (4mm × 5mm, 0.5mm pitch) package with exposed thermal pad, optimized for high-current DC/DC conversion and compact portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pins 1, 30) | LDO output | 3.6V internal supply powering logic and open-drain interfaces; requires 4.7µF ceramic capacitor to AGND for stability. |
| SCL/SDA (Pins 4, 3) | I²C bus interface | Open-drain communication lines; require 10kΩ pull-up resistors to logic rail for SMBus/I²C configuration and status readback. |
| INT (Pin 5) | Interrupt output | Active-low open-drain signal indicating fault events (OVP, thermal, battery missing) or charge completion; pulled up to VCC. |
| TS/IMON (Pin 7) | Multi-function analog pin | Configurable as temperature sense (TS) or charge/discharge current monitor (IMON); outputs analog voltage proportional to sensed parameter. |
| SRP/SRN (Pins 15, 14) | Battery current sense | Differential inputs for battery-side current sensing; used for CC/CV control, termination, and safety monitoring. |
| IAP/IAN (Pins 26, 24–25) | Input current sense | Differential inputs measuring input current; enable precise IIN limit enforcement and adapter load management per USB PD specs. |
| BATT (Pin 12) | Battery positive terminal | Main battery connection point; requires 22µF ceramic capacitor placed adjacent to minimize IR drop and improve transient response. |
| IN (Pin 22) | Power stage input | Primary input node for buck-boost converter; requires four 10µF ceramic capacitors to PGND for low-impedance decoupling. |
| ACGATE (Pin 27) | External MOSFET driver | Drives gate of external N-channel pass-through FET for input OVP and reverse current blocking; includes 1MΩ gate-source resistor recommendation. |
| ADP (Pin 28) | Adapter voltage sense | Monitors input adapter voltage for UVLO/OVLO protection; also provides internal bias voltage for internal circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Four-phase adaptive charging | Automatically sequences trickle → pre-charge → fast charge → CV based on real-time VBATT and temperature, eliminating need for external state machine. |
| USB PD 3.0 source mode compliance | Delivers programmable 4V–21V output with 20mV resolution and 6A discharge current, meeting PPS voltage step and timing requirements. |
| Integrated 10-bit ADC | Simultaneously monitors VADP, VBATT, IIN, ICC, VNTC, and TS/IMON in both charge and source modes-enabling closed-loop system telemetry without external converters. |
| Configurable JEITA temperature profiling | Supports independent cold/cool/warm/hot thresholds (e.g., 0°C/10°C/45°C/60°C) via register settings, allowing safe charging across environmental extremes. |
| Battery missing and NTC float detection | Hardware-level fault detection on NTC pin (VNTC_FLT at 95% VVNTC) and open-circuit BATT sensing-prevents unsafe charging attempts on disconnected or faulty packs. |
Applications
| Power Banks | Wireless Speakers |
|---|---|
Use Scenario: Portable multi-cell power bank with USB-C input/output supporting simultaneous charging and device powering. IC Role / Device Role / Timing Role: Primary bidirectional power manager handling 2S/3S battery charging from USB PD adapters and regulated 5V/9V/15V/20V output to connected devices. Use Value: Enables single-chip solution for dual-role power delivery with <95% peak efficiency at 3A, eliminating discrete buck + boost + LDO combinations. | Use Scenario: High-fidelity Bluetooth speaker with built-in 2S Li-ion pack requiring fast recharge and stable audio supply during playback. IC Role / Device Role / Timing Role: Battery charger and system power regulator that maintains clean 12V rail for Class-D amplifier while preventing battery overvoltage during AC charging. Use Value: Integrated input OVP and battery OVP (±230mV/cell threshold) ensure speaker reliability during unstable wall adapter conditions. |
| Drones | Mobile Printers |
Use Scenario: Compact quadcopter with 3S smart battery needing rapid field charging from variable-input sources (car, solar, USB PD). IC Role / Device Role / Timing Role: Adaptive buck-boost charger managing 12.6V battery charge profile while dynamically adjusting IIN limit to avoid brownout on shared vehicle power bus. Use Value: Configurable VIN_MIN (down to 4.56V) and IIN_LIM (0–5.8A) allow safe operation even with low-voltage automotive sources (<6V). | Use Scenario: Portable label printer powered by 4S Li-ion battery, requiring USB-C fast charge and stable 19V motor drive rail. IC Role / Device Role / Timing Role: High-accuracy 4S charger (VBATT_REG = 16.8V ±84mV) with source-mode 19V output for stepper motor driver ICs. Use Value: ±0.5% battery voltage regulation prevents premature cutoff and extends usable capacity by >3% per cycle versus ±1% alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost battery charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ25792RTWR | Single-inductor buck-boost with 3.0V–24V input, 1.2A max charge current, no integrated ACGATE driver; uses external NTC biasing. | Limited to lower-power applications (≤10W); lacks source-mode output voltage programmability and IMON analog monitoring. | Select when cost sensitivity outweighs multi-cell flexibility and USB PD source capability. |
| ISL9241IRZ-T | 4-switch buck-boost with 3.5V–24V input, 6.4A charge current, but only supports 1S–3S (not 4S); no source-mode OVP/UVP protection. | Not suitable for 4-cell battery systems above 13.6V; missing configurable VIN_MIN and JEITA cold-threshold settings. | Choose for 3S drone or power tool applications where 4S support and full USB PD compliance are unnecessary. |
Compared with BQ25792RTWR and ISL9241IRZ-T, the MP2651GVT-000A-Z uniquely supports 4S battery configurations up to 18.68V, offers full USB PD 3.0 source-mode compliance with OVP/UVP, and integrates ACGATE driver and analog IMON/TS monitoring-making it optimal for high-density, dual-role portable electronics.
Availability
MP2651GVT-000A-Z is available at Aetrix Electronics and suitable for power banks, wireless speakers, drones, and mobile printers requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for MP2651GVT-000A-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 distribution through authorized partners.
The MP2651 belongs to MPS's advanced battery management product line, engineered specifically for high-efficiency, software-configurable, multi-cell portable power systems requiring bidirectional energy flow and USB PD interoperability.
FAQ
What is the default factory configuration for MP2651GVT-000A-Z?
The "-000A" suffix indicates the factory OTP setting for 2-cell (2S) battery applications, with default charge voltage of 8.4V, pre-charge threshold of 3.0V/cell, and I²C address configured for standard bus operation. All registers retain these defaults until modified via I²C write.
Does MP2651GVT-000A-Z support reverse current blocking during source mode?
Yes-it integrates an ACGATE driver (Pin 27) that controls an external N-channel MOSFET to block reverse current from battery to input during source mode, preventing battery drain when no adapter is present. The driver includes slew-rate control and 1MΩ gate-source resistor guidance.
How is battery temperature monitored without external components?
The MP2651 uses its VNTC pin to bias an NTC thermistor and its TS/IMON pin (configured as TS) to measure the resulting voltage divider ratio. Internal comparators compare this against JEITA-defined thresholds (cold/cool/warm/hot), with hysteresis and floating-detection logic-all implemented without external op-amps or ADCs.
Can MP2651GVT-000A-Z operate without I²C communication?
Yes-the device functions autonomously using factory-programmed OTP values for charge voltage, current limits, and JEITA thresholds. I²C is optional for runtime reconfiguration; basic charging proceeds immediately after power-up with default settings.
What thermal management features prevent overheating during high-current operation?
It combines three layers: (1) configurable thermal regulation (up to 120°C) that linearly reduces charge current before shutdown, (2) hard thermal shutdown at 150°C with 20°C hysteresis, and (3) θJA = 38°C/W in TQFN-30 package-enabling sustained 5A operation with minimal heatsinking on 4-layer PCBs.
Is the MP2651GVT-000A-Z compliant with USB PD 3.0 Programmable Power Supply (PPS)?
Yes-its source mode supports 4V–21V output in 20mV steps and 0–6A discharge current in 50mA steps, meeting PPS voltage resolution and timing requirements. The I²C interface allows dynamic adjustment of VIN_SRC and IIN_SRC during PPS negotiation without interrupting power delivery.
What protection mechanisms guard against battery overvoltage during charging?
It provides dual-layer battery OVP: (1) primary regulation loop with ±0.5% accuracy at 25°C, and (2) independent comparator-based OVP threshold of +230mV/cell (typical) with 113mV hysteresis and 30ms deglitch-ensuring fail-safe cutoff even if regulation loop fails.
MP2651GVT-000A-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 30-PowerWFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Battery Chemistry:
- Multi-Chemistry
- Number of Cells:
- 1 ~ 4
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Current, Timer, Voltage
- Fault Protection:
- Over Current, Over Temperature, Over Voltage, Short Circuit
- Charge Current - Max:
- 6A
- Battery Pack Voltage:
- 18.68V (Max)
- Voltage - Supply (Max):
- 22V
- Interface:
- I2C, SMBus, USB
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 30-TQFN (4x5)
MP2651GVT-000A-Z FAQ
1.How can I place an order for MP2651GVT-000A-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2651GVT-000A-Z on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MP2651GVT-000A-Z reliable?
The price and inventory of MP2651GVT-000A-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2651GVT-000A-Z is usually 5 days.
3.What payment methods are accepted for MP2651GVT-000A-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2651GVT-000A-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2651GVT-000A-Z?
MP2651GVT-000A-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2651GVT-000A-Z order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MP2651GVT-000A-Z?
For technical support, including MP2651GVT-000A-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2651GVT-000A-Z requirements.
6.How does Aetrix verify that MP2651GVT-000A-Z is sourced from the original manufacturer or authorized distributors?
All MP2651GVT-000A-Z products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MP2651GVT-000A-Z meets industry standards.
7.What is the process for return or replacement of MP2651GVT-000A-Z?
All MP2651GVT-000A-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2651GVT-000A-Z, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MP2651GVT-000A-Z part is unused and in its original packaging.
Return procedure for MP2651GVT-000A-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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