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Monolithic Power Systems Inc. MP2790DFP-0001-T
- Part No.:
- MP2790DFP-0001-T
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Battery Management
- Package:
- 48-TQFP
- Datasheet:
-
MP2790DFP-0001-T.pdf
- Description:
- 7-CELL TO 10-CELL, HIGH-ACCURACY
- Quantity:
- Payment:
- Shipping:
Inventory:1,250
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Product details
Overview
MP2790DFP-0001-T from Monolithic Power Systems is a 4- to 10-cell high-accuracy battery monitor and protector with dual ADC architecture, ±2% SOC error (when paired with MPF4279x fuel gauge), <5mV cell voltage measurement error, and integrated high-side CHG/DSG MOSFET drivers for independent charge/discharge control in e-bike and power tool BMS applications.
For engineers reviewing the MP2790DFP-0001-T datasheet, MP2790DFP-0001-T pinout, MP2790DFP-0001-T application, or MP2790DFP-0001-T equivalent, this device delivers synchronized voltage/current sampling for impedance sensing, configurable hardware protections (OV/UV/OT/UT/SC/OC), passive balancing up to 58mA, and I²C/SPI interface with 8-bit CRC - all in a TQFP-48 package rated for 80V absolute max on critical pins.
Technical Context
The MP2790 employs two independent sigma-delta ADCs: one for 10-channel differential cell voltage, die temperature, and four NTC inputs (15-bit resolution); the other for bidirectional current sensing via external shunt (16-bit resolution), enabling strictly synchronous acquisition for real-time pack impedance analysis. Its dual ADC timing engine eliminates inter-channel skew during simultaneous cell voltage and current capture.
It integrates high-side N-channel MOSFET drivers with soft-start discharge control (eliminating external pre-charge circuits), configurable protection thresholds with recovery options, and internal balancing FETs (RDS(ON) = 15–50Ω) supporting automatic/manual balancing - all managed through register-configurable safety logic that operates independently of host communication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell Count Support | 4S to 10S series battery packs - enables scalable BMS designs from light EVs to industrial UPS without hardware change. |
| Cell Voltage Accuracy | ±5 mV (typ.) over 1V–4.5V range at 25°C - ensures precise cell-level state-of-health tracking and prevents premature cutoff. |
| Current Sensing Error | ±0.5% full-scale error with ±12 µV offset - supports accurate coulomb counting and dynamic load profiling for SOC estimation. |
| Protection Threshold Resolution | 19.5 mV per step for cell OV/UV - allows fine-grained, programmable safety margins aligned with Li-ion chemistry limits. |
| Passive Balancing Current | Up to 58 mA per cell - sufficient for active equalization in mismatched 10S packs without external transistors. |
| Communication Interface | I²C or SPI with 8-bit CRC - provides robust, noise-immune digital control suitable for noisy motor-drive environments. |
| Operating Voltage Range | TOP supply: 10 V to 47 V - matches nominal 36 V / 48 V battery systems used in e-scooters and cordless tools. |
| Package | TQFP-48 (7 mm × 7 mm) - surface-mount footprint compatible with automated PCB assembly and thermal management via exposed pad. |
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–C10 | Cell voltage sense inputs | Differential connections across 10-series cells - C0 = cell 1 negative, C1–C10 = successive positive nodes up to pack top. |
| SRP / SRN | Current-sense differential inputs | High-precision Kelvin connection to shunt resistor - supports ±100 mV input range with sub-µV offset for bidirectional current monitoring. |
| CHG / DSG / SBYDSG | High-side MOSFET gate drivers | Independent N-FET drivers with soft-start (DSG) and charge pump (CP/MID) - enable 100A+ DC load switching without external pre-charge circuitry. |
| NTC1–NTC4 / NTCB | Thermistor interface | Four dedicated NTC inputs + bias rail - supports multi-point thermal monitoring with 15-bit ADC resolution and ±55 LSB total error. |
| SCL/SCK / SDA/SDI / SDO / GPIO3/nCS | Configurable serial interface | Multi-function pins supporting I²C (SCL/SDA) or SPI (SCK/SDI/SDO/nCS) - simplifies host controller integration with single-pin mode selection. |
| TOP / PACKP / MID | High-voltage domain terminals | TOP connects to pack anode (up to +47 V), PACKP senses load-side voltage, MID serves as CHG/DSG FET source reference - all rated to 90 V absolute max. |
Key Features
| Feature | Design Value |
|---|---|
| Dual synchronized ADC architecture | Enables simultaneous 10-cell voltage and current sampling for real-time impedance-based SOH calculation - no software synchronization required. |
| Configurable hardware protections | Independent charge/discharge OC, SC, OV, UV, OT, UT thresholds with user-defined delay and auto-recovery - reduces MCU firmware safety burden. |
| Integrated LDOs | 3.3 V (±5%) and 5 V REGIN-regulated outputs - powers external peripherals and communication interfaces without discrete regulators. |
| Open-wire detection | Active pull-up/pull-down on cell sense lines - identifies broken connections before cell imbalance causes safety faults. |
| Persistent dead-battery flag | Non-volatile latch triggered by deep discharge - alerts host system to low-Vcell condition even after power cycle. |
| Lockable MTP memory | One-time programmable storage for critical protection thresholds - prevents accidental overwrite during field updates or reprogramming. |
Applications
| E-Bikes & E-Scooters | Power & Gardening Tools |
|---|---|
Use Scenario: 48 V, 10S lithium-ion battery pack powering hub motor and regenerative braking in Class 3 e-bikes. IC Role / Device Role / Timing Role: Primary analog front-end for cell voltage, current, and temperature monitoring; executes hardware-level discharge over-current and short-circuit shutdown within 120 µs. Use Value: Enables safe 30 A continuous discharge with fast fault response, eliminating need for secondary protection ICs and reducing BOM count. |
Use Scenario: 36 V, 10S battery in cordless string trimmer with brushless motor and torque-sensing trigger. IC Role / Device Role / Timing Role: Real-time coulomb counting and cell balancing supervisor; manages charge/discharge FETs during rapid load transients and thermal events. Use Value: Extends runtime by 8% via 58 mA passive balancing and maintains SOC accuracy within ±2% across 500+ cycles using MPF4279x fuel gauge pairing. |
| Battery Backup Systems (UPS) | Light Electric Vehicles (LEVs) |
Use Scenario: 48 V, 10S LiFePO₄ backup for telecom base station with 24/7 grid-tie operation. IC Role / Device Role / Timing Role: Dual-role monitor: tracks pack health during float charging and detects sudden load surges during grid failure. Use Value: Provides 15-bit TOP and PACKP voltage measurements (±250 mV error) for precise state-of-charge and remaining runtime estimation. |
Use Scenario: 60 V, 10S NMC battery in neighborhood electric vehicle (NEV) with CAN-based BMS master. IC Role / Device Role / Timing Role: Slave AFE node handling analog sensing and local protection; communicates via SPI to central controller. Use Value: Supports random cell connection tolerance and open-wire detection - simplifies serviceability and reduces field return rates due to wiring errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery monitor and protector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ7695200RSMR | 16-bit ADC only (no dual ADC sync), 3.3 V LDO only, no internal balancing FETs, supports up to 16 cells. | Requires external balancing transistors and separate 5 V regulator; better suited for high-cell-count stationary storage than portable LEVs. | Select when >10S scalability is needed and cost-per-cell is prioritized over integrated balancing. |
| ISL94203RTZ-T7A | Single 14-bit ADC, no coulomb counting, 100 mA balancing current, supports up to 13 cells, no soft-start DSG driver. | Lacks synchronous voltage/current sampling and hardware DSG soft-start - necessitates external pre-charge circuitry in high-capacity tools. | Choose for cost-sensitive 12S–13S applications where SOC accuracy <±5% is acceptable and thermal headroom is limited. |
Compared with BQ7695200RSMR and ISL94203RTZ-T7A, the MP2790DFP-0001-T uniquely combines dual synchronized ADCs, integrated 58 mA balancing, and soft-start discharge control - delivering higher SOC accuracy, lower BOM count, and faster time-to-safe-state in portable 4S–10S systems.
Availability
MP2790DFP-0001-T is available at Aetrix Electronics and suitable for e-bike battery management, cordless power tool packs, and light electric vehicle (LEV) energy storage systems requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.
Supply support for MP2790DFP-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, and global manufacturing partnerships.
The MP2790 belongs to MPS's Battery Management AFE product line, engineered specifically for high-accuracy, high-voltage, multi-cell lithium-based systems in mobility and portable industrial equipment - emphasizing hardware autonomy, safety integrity, and minimal external component count.
FAQ
What communication protocols does MP2790DFP-0001-T support?
The MP2790DFP-0001-T supports both I²C and SPI interfaces via pin-strapping (SCL/SCK, SDA/SDI, SDO, GPIO3/nCS). Configuration is fixed at power-up based on GPIO3/nCS and SCL/SCK states - no runtime switching. Both modes include 8-bit CRC for data integrity, and SPI supports daisy-chaining multiple devices.
Does MP2790DFP-0001-T require external components for basic operation?
Yes: a 1 µF capacitor on 3V3, 1 µF on VDD, 3.3 µF on REGIN, and 47 nF between CP and MID are mandatory. External NTC thermistors, current-sense resistor, and high-side MOSFETs are also required. The device integrates LDOs, balancing FETs, and protection logic - eliminating need for discrete comparators or voltage references.
How does the MP2790 achieve ±2% SOC error?
±2% SOC error is achieved only when the MP2790 is paired with the MPF4279x fuel gauge IC. The MP2790 provides high-accuracy, synchronized voltage and current measurements (±5 mV cell voltage, ±0.5% current) to the MPF4279x, which performs advanced coulomb counting and model-based compensation - not achievable standalone.
Can MP2790DFP-0001-T drive external balancing transistors?
Yes: the internal balancing FETs (58 mA max) can be disabled via register control, and the BALx pins repurposed as gate drivers for external N-channel MOSFETs or PNP BJTs. This extends balancing current beyond 58 mA and supports active balancing topologies - documented in MPS Application Note AN2790-01.
What is the maximum pack voltage supported by MP2790DFP-0001-T?
The MP2790DFP-0001-T supports up to 10-series lithium cells (nominal 37 V, absolute max ~47 V on TOP pin). Its absolute maximum rating for TOP-to-AGND is +90 V, but functional operation is specified only up to +47 V. Exceeding 47 V violates recommended operating conditions and may trigger UVLO or damage internal protection circuitry.
Is the MP2790DFP-0001-T AEC-Q100 qualified?
No: the MP2790DFP-0001-T is not AEC-Q100 qualified. It is rated for industrial temperature range (–40°C to +85°C) and intended for e-bikes, power tools, and LEVs - not automotive powertrain or ADAS applications. MPS offers the MP2790A variant for AEC-Q100 Grade 2 compliance.
How is cell over-voltage protection configured?
Cell OV thresholds are set per-cell via 19.5 mV resolution registers (e.g., 4.25 V = 0x8A). Each threshold is independently configurable, with hysteresis and delay timers. Detection triggers hardware DSG FET shutdown within 120 µs (short-circuit mode) or programmable delay (OV/UV), and status is latched in fault registers accessible via I²C/SPI.
MP2790DFP-0001-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 ~ 10
- 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)
MP2790DFP-0001-T FAQ
1.How can I place an order for MP2790DFP-0001-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2790DFP-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 MP2790DFP-0001-T reliable?
The price and inventory of MP2790DFP-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 MP2790DFP-0001-T is usually 5 days.
3.What payment methods are accepted for MP2790DFP-0001-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2790DFP-0001-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2790DFP-0001-T?
MP2790DFP-0001-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2790DFP-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 MP2790DFP-0001-T?
For technical support, including MP2790DFP-0001-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2790DFP-0001-T requirements.
6.How does Aetrix verify that MP2790DFP-0001-T is sourced from the original manufacturer or authorized distributors?
All MP2790DFP-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 MP2790DFP-0001-T meets industry standards.
7.What is the process for return or replacement of MP2790DFP-0001-T?
All MP2790DFP-0001-T units undergo pre-shipment inspection (PSI). If there is an issue with MP2790DFP-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 MP2790DFP-0001-T part is unused and in its original packaging.
Return procedure for MP2790DFP-0001-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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