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Monolithic Power Systems Inc. MP2787DFP-0000-T
- Part No.:
- MP2787DFP-0000-T
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Battery Management
- Package:
- 48-TQFP
- Datasheet:
-
MP2787DFP-0000-T.pdf
- Description:
- 7-CELL TO 16-CELL, HIGH-ACCURACY
- Quantity:
- Payment:
- Shipping:
Inventory:4,650
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Product details
Overview
MP2787DFP-0000-T from Monolithic Power Systems is a 7- to 16-cell battery monitor IC with dual ADC architecture, ±2% SOC error when paired with MPF4279x fuel gauge, <5mV cell voltage measurement error, and integrated passive balancing up to 58mA per cell. It serves as the analog front-end in high-voltage BMS for e-bikes, power tools, and energy storage systems.
For engineers reviewing the MP2787DFP-0000-T datasheet, MP2787DFP-0000-T pinout, MP2787DFP-0000-T application, or MP2787DFP-0000-T equivalent, key selection considerations include its 75.2V VTOP rating, synchronous current/voltage sampling for impedance sensing, I²C/SPI interface with CRC, TQFP-48 package, and hardware-configurable overvoltage/overcurrent/temperature alarms.
Technical Context
The MP2787 implements two independent sigma-delta ADCs: one for 16-channel differential cell voltage, die temperature, and four NTC thermistor inputs; another for high-accuracy current sensing via external shunt resistor. This enables strictly synchronized measurements critical for pack impedance profiling and Coulomb counting.
Its architecture supports random cell connection tolerance, open-wire detection on all cell inputs, persistent dead-battery flag, and lockable MTP memory for alarm thresholds. The device operates across -40°C to +85°C with VTOP supply range of 18V–75.2V and integrates 3.3V/5V LDOs, high-voltage GPIOHV1 (up to +86V), and configurable balancing control for internal MOSFETs or external transistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell Count Support | 7S to 16S series battery packs - enables scalable BMS designs for 25.9V–75.2V nominal stacks. |
| Cell Voltage Accuracy | <±5mV (typ.) at 25°C - ensures precise cell-level state-of-health tracking and balancing decisions. |
| Current Measurement Error | <±0.5% full-scale - delivers high-fidelity Coulomb counting for accurate runtime estimation. |
| VTOP Operating Range | 18V to 75.2V - supports high-voltage ESS and industrial battery packs without external level-shifting. |
| Communication Interface | I²C or SPI with 8-bit CRC - provides robust, noise-immune digital communication in electrically noisy environments. |
| Passive Balancing Current | Up to 58mA per cell - sufficient for active equalization in mid-power applications without external FETs. |
| Integrated Regulators | 3.3V LDO (68mA short-circuit limit) and REGIN-controlled 5V bias - powers external peripherals and NTC bias circuitry. |
| Hardware Alarms | Configurable OV/UV per cell & pack, OC charge/discharge, and 5 temperature interrupts - enables autonomous fault response without host intervention. |
Pinout & Package
MP2787DFP-0000-T is housed in a TQFP-48 (7mm × 7mm) package with exposed thermal pad, rated MSL-3, and optimized for high-voltage battery stack monitoring. Pin functions are validated per MPS MP2787 Rev. 1.0 datasheet (Aug 2023).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C0–C16 | Cell voltage sense inputs | Differential inputs for 16-cell stack (C0 = cell 1 negative; C16 = cell 16 positive); support up to 86V absolute voltage on C16. |
| SRP / SRN | Current-sense differential inputs | Accept ±100mV differential across external shunt; enable high-precision charge/discharge current measurement. |
| NTC1–NTC4 / NTCB | Thermistor interface | Four dedicated NTC inputs with shared bias (NTCB); support temperature monitoring at multiple pack locations. |
| VTOP / BAT | High-voltage supply inputs | Connect to top of battery stack (up to +86V); power internal circuitry and enable high-side sensing reference. |
| SCL/SCK / SDA/SDI / SDO / GPIO3/nCS | Configurable digital interface | Multi-function pins supporting I²C (SCL/SDA) or SPI (SCK/SDI/SDO/nCS) with CRC; allow flexible host connectivity. |
| xALERT | Hardware interrupt output | Open-drain alert signal asserting on any enabled alarm (OV, UV, OC, OT); reduces host polling overhead. |
| NSHDN | Active-low shutdown control | Hardware-initiated low-power mode with 8ms deglitch; enables system-level power gating during storage or fault. |
| 3V3 / VDD / VREF | Internal power & reference rails | 3.3V LDO output (bypassed externally), 1.8V core rail, and stable 3.3V ADC reference - ensure analog accuracy across temperature. |
Key Features
| Feature | Design Value |
|---|---|
| Dual synchronized ADCs | Enables simultaneous cell voltage and current sampling for real-time impedance calculation and dynamic SOC modeling. |
| Lockable MTP memory | Stores user-defined alarm thresholds and configuration settings permanently; prevents accidental overwrite during field operation. |
| Open-wire detection | Identifies broken cell connections on all C0–C16 inputs using internal pull-up/pull-down current sources - improves system safety and diagnostics. |
| Random cell connection tolerance | Accepts non-sequential cell wiring (e.g., C3 connected before C2); simplifies PCB layout and mechanical integration in constrained enclosures. |
| Persistent dead-battery flag | Retains status across power cycles when pack voltage falls below functional threshold - aids recovery diagnostics and user alerts. |
| GPIOHV1 high-voltage I/O | Withstands -0.3V to +86V relative to AGND; suitable for direct connection to high-side battery nodes or HV status signaling. |
Applications
| Power Tools | E-Bikes & E-Scooters |
|---|---|
Use Scenario: Cordless drill/driver with 10S–14S Li-ion pack requiring runtime prediction, cell balancing, and overcurrent protection during burst torque events. IC Role / Device Role / Timing Role: Primary AFE for voltage/current/temperature acquisition and hardware-triggered fault shutdown. Use Value: Enables >98% runtime accuracy via synchronized Coulomb counting and maintains pack longevity through per-cell OV/UV enforcement. |
Use Scenario: Mid-drive e-bike with 13S Li-NMC battery subjected to regenerative braking, thermal cycling, and vibration-induced connector stress. IC Role / Device Role / Timing Role: High-voltage BMS front-end providing open-wire detection, temperature gradient monitoring, and fast OC response (<120µs). Use Value: Prevents thermal runaway via die and NTC-based OT interrupts and extends cycle life using 58mA passive balancing under continuous load. |
| UPS & Battery Backup | Energy Storage Systems |
Use Scenario: Rack-mounted 48V UPS using 14S LiFePO₄ with requirement for long-term calibration stability and low quiescent current during standby. IC Role / Device Role / Timing Role: Low-power monitoring node with 1µA shutdown current and MTP-stored thresholds for maintenance-free operation. Use Value: Achieves >5-year shelf-life compliance by minimizing self-discharge impact and enabling firmware-agnostic alarm persistence. |
Use Scenario: Residential ESS with 16S NMC stack operating in outdoor enclosures where ambient temperature swings exceed -25°C to +60°C. IC Role / Device Role / Timing Role: Robust AFE with -40°C to +85°C junction rating, 15-bit NTC measurement accuracy, and VTOP UVLO hysteresis compensation. Use Value: Guarantees reliable start-up after cold soak and prevents false alarms during rapid temperature transients via calibrated hysteresis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ76952 | Supports up to 16 cells but requires external level shifters for >32V VTOP; no integrated 3.3V LDO; uses different balancing architecture (external FET only). | Targeted at automotive-grade designs with ASIL-B requirements; lacks random cell connection tolerance and open-wire detection on all channels. | Select BQ76952 only if ISO 26262 compliance is mandatory and external level-shifting is acceptable. |
| MAX17853 | Offers 14-bit cell voltage resolution vs. MP2787's 15-bit; no integrated REGIN regulator; lower max VTOP (65V); supports daisy-chain but no SPI option. | Optimized for cost-sensitive industrial BMS with fixed I²C topology; lacks dual-ADC synchronization and Coulomb counter error spec. | Choose MAX17853 for legacy I²C-only systems where <±10mV cell error is acceptable and daisy-chain scalability is prioritized. |
Compared with BQ76952 and MAX17853, MP2787DFP-0000-T uniquely combines 75.2V VTOP tolerance, integrated LDOs, dual-synchronized ADCs, and random-cell wiring support-making it optimal for high-voltage consumer and industrial BMS where board space, calibration simplicity, and analog integrity are critical.
Availability
MP2787DFP-0000-T is available at Aetrix Electronics and suitable for power tools, e-mobility systems, and energy storage applications requiring stable component supply, long-lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for MP2787DFP-0000-T 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 since 1997.
The MP2787 belongs to MPS's high-voltage battery monitor product line, engineered specifically for accurate, robust, and scalable BMS implementations in 25–75V battery packs used in portable and stationary energy applications.
FAQ
What communication protocols does MP2787DFP-0000-T support?
MP2787DFP-0000-T supports both I²C and SPI interfaces, selectable via configuration bits. I²C operates up to 400kHz with standard addressing; SPI runs up to 1MHz with 8-bit CRC for error detection. The default configuration for MP2787DFP-0000-T is I²C with CRC disabled, as indicated by its part number suffix.
Does MP2787DFP-0000-T require external passive components for basic operation?
Yes - essential external components include a 1µF capacitor on 3V3, a 1µF capacitor on VDD, a 3.3µF capacitor on REGIN, and a precision current-sense resistor on SRP/SRN. NTC thermistors require 10kΩ pull-up to NTCB, and VTOP/BAT lines need appropriate high-voltage decoupling per layout guidelines.
How does the dual-ADC architecture improve battery monitoring accuracy?
The dual-ADC architecture enables strictly synchronized sampling of cell voltages and current - eliminating time skew between voltage and current readings. This allows precise real-time impedance calculation, accurate Coulomb counting under dynamic load, and improved SOC estimation when paired with MPF4279x fuel gauges.
Can MP2787DFP-0000-T perform cell balancing without external MOSFETs?
Yes - it integrates internal passive balancing MOSFETs rated for up to 58mA per cell at 25°C (RDS(ON) = 28Ω typ.). For higher currents or active balancing, the device supports driving external N-channel MOSFETs or PNP BJTs via dedicated gate/base control signals.
What is the maximum allowable voltage on the C16 pin?
The C16 pin supports an absolute maximum voltage of +86V relative to AGND, as specified in the Absolute Maximum Ratings table. This allows direct connection to the top of 16S Li-ion stacks (up to ~65V nominal) with margin for transient overvoltage and pack imbalance.
Is open-wire detection available on all cell inputs?
Yes - open-wire detection is implemented on all C0 through C16 pins using programmable internal pull-up and pull-down current sources (100µA each). Detection status is reported via dedicated register flags and can trigger xALERT assertion.
Does MP2787DFP-0000-T include factory-trimmed calibration data?
No - MP2787DFP-0000-T does not ship with factory-trimmed calibration coefficients. However, its cell voltage error is guaranteed ≤±15mV over temperature without calibration, and post-PCB assembly calibration (via MPS-provided app note) can reduce error to ≤±5mV.
MP2787DFP-0000-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 48-TQFP
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Battery Monitor
- Battery Chemistry:
- Multi-Chemistry
- Number of Cells:
- 7 ~ 16
- Fault Protection:
- Over Current, Over Temperature, Over/Under Voltage, Short Circuit
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TQFP (7x7)
MP2787DFP-0000-T FAQ
1.How can I place an order for MP2787DFP-0000-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2787DFP-0000-T 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 MP2787DFP-0000-T reliable?
The price and inventory of MP2787DFP-0000-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2787DFP-0000-T is usually 5 days.
3.What payment methods are accepted for MP2787DFP-0000-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2787DFP-0000-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2787DFP-0000-T?
MP2787DFP-0000-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2787DFP-0000-T 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 MP2787DFP-0000-T?
For technical support, including MP2787DFP-0000-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2787DFP-0000-T requirements.
6.How does Aetrix verify that MP2787DFP-0000-T is sourced from the original manufacturer or authorized distributors?
All MP2787DFP-0000-T 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 MP2787DFP-0000-T meets industry standards.
7.What is the process for return or replacement of MP2787DFP-0000-T?
All MP2787DFP-0000-T units undergo pre-shipment inspection (PSI). If there is an issue with MP2787DFP-0000-T, 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 MP2787DFP-0000-T part is unused and in its original packaging.
Return procedure for MP2787DFP-0000-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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