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Monolithic Power Systems Inc. MP2787DFP-0001-T
- Part No.:
- MP2787DFP-0001-T
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Battery Management
- Package:
- 48-TQFP
- Datasheet:
-
MP2787DFP-0001-T.pdf
- Description:
- 7-CELL TO 16-CELL, HIGH-ACCURACY
- Quantity:
- Payment:
- Shipping:
Inventory:1,240
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Product details
Overview
MP2787DFP-0001-T from Monolithic Power Systems is a 7- to 16-cell high-accuracy battery monitor IC with dual ADC architecture, coulomb counting, and hardware-configurable over-voltage/under-voltage/over-current alarms. It integrates internal passive balancing MOSFETs (58mA max), dual LDOs (3.3V/5V), and supports I²C with CRC enabled. Used in e-bike BMS for real-time cell voltage synchronization and impedance sensing.
For engineers reviewing the MP2787DFP-0001-T datasheet, MP2787DFP-0001-T pinout, MP2787DFP-0001-T application, or MP2787DFP-0001-T equivalent, key selection considerations include 16-channel differential cell voltage measurement (<±5mV error), synchronous current/voltage sampling for impedance monitoring, 80V absolute max VTOP rating, TQFP-48 package compatibility, and I²C/CRC-enabled communication mode.
Technical Context
The MP2787 employs two independent sigma-delta ADCs: one for up to 16-cell differential voltages, die temperature, and four NTC thermistors; the other for bidirectional current sensing via external shunt resistor. This enables strictly synchronized voltage and current acquisition - essential for pack-level impedance calculation and SOC refinement when paired with MPF4279x fuel gauges.
Hardware alarm logic operates independently of host firmware, with configurable thresholds for per-cell OV/UV, pack OV/UV, charge/discharge OC, and multi-point temperature interrupts. Internal balancing FETs (RDS(ON) = 15–50 Ω) support automatic or manual control, and GPIOHV1 tolerates up to +86V relative to AGND for direct high-side monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell count support | 7S to 16S series battery packs - enables scalable BMS designs for 25.9V–60V nominal systems. |
| Cell voltage accuracy | <±5 mV (typ.) at 2V–4.5V, -40°C to +85°C - ensures reliable cell balancing and state-of-health tracking. |
| Current measurement error | <±0.5% full-scale, ±12 µV offset - enables precise coulomb counting and charge/discharge energy accounting. |
| VTOP operating range | 18V to 75.2V - supports high-voltage battery stacks while maintaining safe margin below 80V absolute max rating. |
| Communication interface | I²C with 8-bit CRC enabled - provides error-resilient host communication for safety-critical BMS updates. |
| Passive balancing current | Up to 58 mA per cell - sufficient for moderate mismatch correction without external FETs in mid-power tools and e-scooters. |
| Package | TQFP-48 (7mm × 7mm) - surface-mount compatible with standard reflow profiles and thermal management for industrial ambient. |
Pinout & Package
TQFP-48 (7mm × 7mm) package with exposed thermal pad; RoHS-compliant, lead-free, halogen-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C0–C16 | Cell voltage sense inputs | Differential connections for 16-series cells; C0 = cell 1 negative, C1–C16 = successive cell positives - enables daisy-chainable stack monitoring. |
| SRP / SRN | Current-sense differential inputs | Accepts ±100 mV shunt voltage; supports bidirectional current measurement with 0.5 µA input bias during conversion. |
| NTC1–NTC4 / NTCB | Thermistor interface | Four dedicated NTC inputs with shared bias (NTCB); supports 15-bit temperature ADC with ±55 LSB error across -40°C to +85°C. |
| VTOP / BAT | High-voltage supply sensing | Direct connection to top of battery stack (up to +86V absolute); powers internal regulators and enables pack voltage measurement. |
| SCL/SCK / SDA/SDI / SDO / GPIO3/nCS | Configurable serial interface | I²C or SPI operation selectable via register; includes CRC, deglitching, and interrupt-driven alert (xALERT) output. |
| GPIOHV1 | High-voltage general-purpose I/O | Withstands -0.3V to +86V vs AGND; usable for HV status signaling or external FET gate drive in isolated BMS architectures. |
Key Features
| Feature | Design Value |
|---|---|
| Dual synchronized ADCs | Enables simultaneous cell voltage and current sampling - required for real-time impedance-based SOC correction with MPF4279x fuel gauge. |
| Hardware alarm engine | Independent OV/UV/OC/temperature interrupt generation with user-configurable thresholds - eliminates host CPU polling overhead and improves fault response time. |
| Integrated balancing FETs | On-chip 58mA balancing per cell with RDS(ON) ≤ 50 Ω - reduces BOM count and PCB area versus discrete balancing solutions. |
| Multi-rail regulation | Embedded 3.3V LDO (68mA short-circuit rated) and REGIN-controlled 5V bias - powers external peripherals and external BJT LDOs without secondary regulators. |
| Open-wire detection | Active pull-up/pull-down on cell sense lines (100 µA each) - identifies broken interconnects before cell imbalance causes safety hazards. |
Applications
| Power Tools | E-Bikes & E-Scooters |
|---|---|
|
Use Scenario: Cordless drill/driver with 10S–14S Li-ion pack requiring runtime estimation, cell balancing, and over-temperature shutdown. IC Role / Device Role / Timing Role: Primary analog front-end for voltage/current/temperature acquisition and hardware-triggered fault isolation. Use Value: <±5mV cell voltage accuracy enables consistent torque delivery and prevents premature cutoff; 58mA balancing maintains capacity over 500+ cycles. |
Use Scenario: 48V e-bike battery with integrated BMS managing regenerative braking, motor phase current, and charger handshake. IC Role / Device Role / Timing Role: Real-time coulomb counter and impedance sensor feeding SOC algorithm in companion MPF4279x fuel gauge. Use Value: Synchronized dual-ADC sampling achieves ≤2% SOC error under dynamic load; GPIOHV1 monitors HV bus pre-charge sequence. |
| UPS Systems | Energy Storage |
|
Use Scenario: 12kW residential UPS using 16S LFP battery with grid-tie inverter, requiring pack-level OV/UV protection and state-of-health logging. IC Role / Device Role / Timing Role: High-voltage pack monitor with persistent dead-battery flag and lockable MTP memory for threshold retention. Use Value: VTOP measurement error ≤±250 mV ensures accurate end-of-discharge detection; MTP stores calibrated UV/OV thresholds across power cycles. |
Use Scenario: Commercial ESS rack with 12–16S modules, needing cell-level diagnostics, thermal runaway prevention, and CAN gateway interfacing. IC Role / Device Role / Timing Role: Analog sensor hub feeding data to system controller; xALERT triggers immediate isolation relay actuation on OC event. Use Value: 120 µs OC detection latency meets UL 1973 fast-trip requirements; NTCB bias supports 4× thermistor channels per module for hotspot mapping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ7695200RSMR | 16-channel, 16-bit ADC, but no integrated balancing FETs; requires external MOSFET drivers and separate LDOs. | Lacks on-chip 58mA balancing and dual LDOs - increases BOM count and layout complexity in space-constrained tools. | Select when higher-resolution ADC (16-bit vs 15-bit) and TI's bqStudio ecosystem are prioritized over integration density. |
| ISL94208IRZ | Supports up to 15 cells only; no VTOP >75V rating; uses SPI-only interface without CRC option. | Not suitable for 16S systems exceeding 75V or requiring I²C/CRC robustness in noisy industrial environments. | Consider only for legacy 12S–15S designs where Renesas' GUI toolchain and lower cost offset missing features. |
Compared with BQ7695200RSMR and ISL94208IRZ, MP2787DFP-0001-T delivers superior integration (balancing FETs + dual LDOs), wider voltage range (75.2V vs 65V/60V), and I²C/CRC reliability - reducing component count and improving field failure resilience in portable high-power systems.
Availability
MP2787DFP-0001-T is available at Aetrix Electronics and suitable for power tools, e-bikes, and uninterruptible power supplies requiring stable component supply, long-term lifecycle support, and automotive-grade reliability under industrial temperature conditions.
Supply support for MP2787DFP-0001-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.
The MP2787 belongs to MPS's battery monitoring product line, engineered specifically for high-accuracy, multi-cell Li-ion/LFP BMS applications demanding synchronized voltage/current acquisition, hardware fault autonomy, and extended voltage range operation.
FAQ
What communication protocol does MP2787DFP-0001-T use, and how is it configured?
MP2787DFP-0001-T uses I²C with 8-bit cyclic redundancy check (CRC) enabled by default. The interface is fixed at this configuration per the "-0001" suffix; switching to SPI requires MP2787DFP-0002-T. SCL/SDA pins operate at 400 kHz maximum, with input thresholds referenced to 3.3V and built-in deglitching to reject noise-induced glitches.
Does MP2787DFP-0001-T support external balancing transistors?
Yes - the device provides gate-drive capability for external N-channel MOSFETs or NPN BJTs via dedicated control signals. Internal balancing FETs handle up to 58mA per cell, but external transistors can be driven for higher currents (e.g., >100mA) in high-power ESS applications. Configuration is done through register settings controlling balancing enable and timing.
How is cell voltage measurement accuracy achieved across temperature?
Cell voltage error is specified at ±12.5 mV over -40°C to +85°C (1V–5V range), with typical performance ≤±5 mV at 25°C. Accuracy is maintained via on-chip calibration registers and matched front-end circuitry; post-PCB assembly calibration further reduces error to <±2 mV, as documented in MPS Application Note AN-157.
What is the role of the VTOP and BAT pins, and can they be connected to the same node?
VTOP senses pack voltage and powers internal regulators; BAT supplies low-current bias to analog circuits. Both pins connect to the top of the battery stack but serve distinct functions: VTOP feeds the high-voltage ADC reference and regulator input, while BAT powers internal logic. They may share a net but require individual 1µF bypass capacitors to AGND per datasheet layout guidelines.
Can MP2787DFP-0001-T operate without an external microcontroller?
No - it is not a standalone fuel gauge. MP2787DFP-0001-T is an analog front-end that acquires raw sensor data and generates hardware interrupts; SOC calculation, balancing scheduling, and communication handling require a host MCU or dedicated fuel gauge like MPF4279x. Its value lies in precision sensing and autonomous fault response, not algorithm execution.
What thermal management provisions exist for the TQFP-48 package?
The TQFP-48 exposes a thermal pad tied to AGND; datasheet specifies RθJA = 46.6°C/W under JEDEC JESD51-7 conditions. Recommended layout includes ≥4 thermal vias (0.3mm diameter) under the pad connecting to inner-layer AGND planes. Junction temperature must remain ≤150°C, with derating applied above +85°C ambient per RθJA and power dissipation.
Is open-wire detection supported on all cell sense lines?
Yes - open-wire detection is implemented on all C0–C16 pins using programmable pull-up/pull-down current sources (100 µA each). Detection occurs during ADC conversion cycles and reports faults via dedicated status bits and xALERT assertion. No external components are required beyond standard sense traces.
MP2787DFP-0001-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 48-TQFP
- Packaging:
- Tray
- 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-0001-T FAQ
1.How can I place an order for MP2787DFP-0001-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2787DFP-0001-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-0001-T reliable?
The price and inventory of MP2787DFP-0001-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-0001-T is usually 5 days.
3.What payment methods are accepted for MP2787DFP-0001-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2787DFP-0001-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2787DFP-0001-T?
MP2787DFP-0001-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2787DFP-0001-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-0001-T?
For technical support, including MP2787DFP-0001-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2787DFP-0001-T requirements.
6.How does Aetrix verify that MP2787DFP-0001-T is sourced from the original manufacturer or authorized distributors?
All MP2787DFP-0001-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-0001-T meets industry standards.
7.What is the process for return or replacement of MP2787DFP-0001-T?
All MP2787DFP-0001-T units undergo pre-shipment inspection (PSI). If there is an issue with MP2787DFP-0001-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-0001-T part is unused and in its original packaging.
Return procedure for MP2787DFP-0001-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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