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NXP Semiconductors MC33772CTP2AE
- Part No.:
- MC33772CTP2AE
- Manufacturer:
- NXP Semiconductors
- Category:
- Battery Management
- Package:
- 48-LQFP Exposed Pad
- Datasheet:
-
MC33772CTP2AE.pdf
- Description:
- IC 6-CH LI-ION BATT CTRL 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:615
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Product details
Overview
MC33772CTP2AE from NXP Semiconductors is a premium-grade automotive AEC-Q100 qualified battery cell controller IC for 3–4 series Li-ion cells, performing synchronized differential cell voltage (±0.7 mV error), current sensing (±0.5% gain error), coulomb counting, and temperature monitoring via seven precision GPIO/ANx inputs. It supports transformer physical layer (TPL) daisy-chain communication at 2.0 Mbit/s with up to 63-node scalability and integrated 300 mA passive cell balancing with diagnostics.
For engineers reviewing the MC33772CTP2AE datasheet, MC33772CTP2AE pinout, MC33772CTP2AE application, or MC33772CTP2AE equivalent, key selection criteria include its TPL-enabled isolated daisy-chain topology, 3–4-cell stack support with OV/UV/OT/UT fault routing, current measurement capability, and ASIL D–ready safety architecture compliant with ISO 26262.
Technical Context
The MC33772CTP2AE implements dual ADC subsystems: ADC1-A/B for high-precision 15-bit differential cell voltage measurement (152.6 µV/LSB resolution) and ADC2 with programmable-gain amplifier (PGA) for bidirectional current sensing (±150 mV differential range, 0.6 µV/LSB register resolution). Its TPL interface uses differential RDTX_OUT+/− and SI/RDTX_IN+/− pins with automatic node addressing and fault-tolerant isolation.
It integrates dedicated analog supplies - VANA (2.65 V ±0.25 V), VCOM (5.0 V ±0.6 V), and VPRE (5.0–6.5 V) - each with independent undervoltage monitoring, retry timers, and current limits. The device operates across −40 °C to +105 °C ambient (TPL mode), supports hot-plug, and performs autonomous sleep-mode monitoring of cell OV/UV and temperature thresholds without MCU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell count support | 3 to 4 series Li-ion cells - defines minimum stack configuration and maximum measurable total voltage (≤19.4 V) |
| Cell voltage accuracy | ±0.7 mV (0.1–4.85 V range, −40 °C to +105 °C) - enables precise state-of-charge estimation within <0.5% SoC error |
| Current sensing | ±0.5% gain error, ±0.5 µV offset, 16-bit resolution (0.6 µV/LSB) - supports high-fidelity coulomb counting and charge/discharge profiling |
| TPL communication | 2.0 Mbit/s differential, capacitive or inductive isolation, up to 63 nodes - eliminates optocouplers and simplifies high-voltage BMS stack interconnect |
| Operating temperature | −40 °C to +105 °C ambient (TPL mode), junction-rated to +150 °C - validated for under-hood and battery-pack mounting locations |
| Safety compliance | ISO 26262 ASIL D ready, AEC-Q100 Grade 1 qualified - meets functional safety requirements for HEV/EV traction battery systems |
| Passive balancing | 300 mA per channel, on-chip drivers with open/short diagnostics - reduces thermal stress vs. external FET solutions and enables real-time fault detection |
Pinout & Package
MC33772CTP2AE is housed in a thermally enhanced 48-pin LQFP-EP package with exposed thermal pad (GNDFLAG) for PCB heat dissipation. The package supports JEDEC J-STD-020C Pb-free reflow (260 °C peak) and achieves RΘJB = 11 °C/W when soldered to board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VPWR1 / VPWR2 | Primary power supply inputs | Accept 7.0–30 V (TPL mode); dual-input structure improves noise immunity and fault tolerance in high-noise battery environments |
| CT_1 to CT_4 | Differential cell terminal inputs | Measure voltage across up to four adjacent cells; each input includes internal LPF termination and leakage current ≤10 nA |
| CB_1 to CB_4 | Cell balance driver outputs | Drive external balancing resistors (typ. 15 Ω); RDS(on) ≤ 0.5 Ω @ 125 °C ensures low self-heating during extended balancing |
| ISENSE+ / ISENSE− | Current sense differential inputs | Support bidirectional shunt-based current measurement with PGA auto-ranging (gains 4–256) and 200 µs auto-zero settling |
| RDTX_OUT+ / − SI/RDTX_IN+ / − |
TPL differential transceiver | Enable isolated daisy-chain communication; no external isolation components required; supports both capacitive and inductive coupling |
| AN0–AN6 / GPIO0–GPIO6 | Configurable analog/digital I/O | Seven precision inputs usable as temperature sensor interfaces (ratiometric or absolute) or digital GPIOs with 3.3 V logic compatibility |
| FAULT | Open-drain fault output | Asserts low on configurable OV/UV/OT/UT faults; routable to MCU interrupt or external watchdog; requires external pull-up |
| VCOM / VANA / VPRE | Regulated analog supplies | VCOM (5.0 V/5 mA) powers external circuitry; VANA (2.65 V) feeds ADC reference; VPRE (5.0–6.5 V) supplies internal regulators - all monitored for UV/OV |
Key Features
| Feature | Design Value |
|---|---|
| Isolated TPL daisy-chain | Enables scalable multi-module BMS stacks without optocouplers or level shifters; supports up to 63 nodes with bi-directional transceiver and automatic address assignment |
| Synchronized voltage/current acquisition | ADC1 and ADC2 trigger simultaneously - eliminates time skew between cell voltage and current samples, critical for accurate impedance and SoH calculation |
| Integrated cell balancing with diagnostics | On-die 300 mA drivers include short/open load detection (20 µs filter), eliminating need for external FETs, gate drivers, and discrete fault monitoring circuits |
| ASIL D–ready safety architecture | Dual-redundant voltage references, lockstep ADCs, memory ECC, clock monitor, and independent fault domains meet ISO 26262 hardware safety requirements for ASIL D |
| Hot-plug capable operation | Withstands live insertion into powered battery strings; internal clamping and sequencing prevent latch-up or transient damage during connection/disconnection events |
| Sleep-mode autonomous monitoring | Continues OV/UV/OT/UT monitoring and fault reporting while drawing only 75 µA (TPL mode, 25 °C) - extends system standby life without MCU wake-up overhead |
Applications
| Automotive HEV/EV Battery Pack | Industrial Energy Storage System (ESS) |
|---|---|
Use Scenario: Monitoring 3–4 cell modules in 400 V–800 V traction battery packs with distributed cell controllers. IC Role / Device Role / Timing Role: Primary cell voltage, current, and temperature acquisition node; synchronizes measurements across daisy-chained modules via TPL interface. Use Value: Enables precise SoC/SoH estimation and thermal runaway prevention with ±0.7 mV cell voltage accuracy and ASIL D–compliant fault handling. |
Use Scenario: Managing Li-ion stacks in grid-scale ESS cabinets where modularity, isolation, and long-term reliability are critical. IC Role / Device Role / Timing Role: Standalone cell supervisor for 3–4 cell sub-packs; communicates over isolated TPL to central controller with minimal BOM cost. Use Value: Reduces isolation component count by 100% vs. SPI-based alternatives; supports >10-year field life with AEC-Q100 qualification and 150 °C junction rating. |
| Uninterruptible Power Supply (UPS) | Battery Junction Box (BJB) |
Use Scenario: Real-time cell-level monitoring in mission-critical UPS systems requiring zero-downtime battery health visibility. IC Role / Device Role / Timing Role: Fault-aware cell controller feeding data to UPS host MCU; autonomously triggers FAULT pin on OV/UV events during AC outage. Use Value: Guarantees uninterrupted backup operation via early thermal and voltage anomaly detection - validated down to −40 °C ambient. |
Use Scenario: Integrated into automotive BJBs to supervise auxiliary 12 V or 48 V Li-ion battery clusters alongside contactor control. IC Role / Device Role / Timing Role: Safety-critical cell supervisor interfacing with ASIL B/C domain controllers; provides diagnostic-ready cell data for functional safety arbitration. Use Value: Meets ISO 26262 ASIL D hardware requirements while delivering 7-channel temperature sensing and coulomb counting for predictive maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery cell controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33772CTP1AE | Supports 3–6 cells instead of 3–4; identical TPL, current sensing, and safety features | Required for larger battery stacks (>4 cells); higher pin utilization for CT_5/CT_6 and CB_5/CB_6 | Select when designing for flexible 3–6 cell configurations; shares same footprint and firmware compatibility |
| MC33772CTA2AE | Lacks current sensing channel (no ISENSE+/−); retains TPL, cell monitoring, and balancing | Suitable for voltage-only monitoring use cases; lower cost and reduced signal routing complexity | Choose when coulomb counting is unnecessary; not suitable for SoC-critical applications requiring current integration |
Compared with MC33772CTP1AE and MC33772CTA2AE, the MC33772CTP2AE uniquely balances 3–4 cell stacks with full current sensing and TPL isolation - making it optimal for compact, safety-critical BMS nodes where space, accuracy, and functional safety are prioritized over maximum cell count flexibility.
Availability
MC33772CTP2AE is available at Aetrix Electronics and suitable for automotive battery management, industrial energy storage systems, and uninterruptible power supply designs requiring stable component supply, long lifecycle assurance, and AEC-Q100 compliance.
Supply support for MC33772CTP2AE 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
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in functional safety and high-reliability analog/mixed-signal design.
The MC33772C product line delivers ASIL D–ready battery cell controllers optimized for scalable, isolated BMS architectures in electric vehicles and industrial storage - emphasizing measurement integrity, fault resilience, and seamless daisy-chain interoperability.
FAQ
What is the maximum number of cells supported by the MC33772CTP2AE?
The MC33772CTP2AE supports 3 to 4 series-connected lithium-ion cells. This is defined by its pinout (CT_1 through CT_4, CB_1 through CB_4) and internal configuration - unlike the MC33772CTP1AE variant which supports up to six cells. The MC33772CTP2AE is specifically optimized for compact battery modules where space and cost constraints favor a 3–4 cell architecture.
Does the MC33772CTP2AE include current sensing capability?
Yes, the MC33772CTP2AE includes a dedicated current sensing channel with ISENSE+ and ISENSE− inputs, supporting bidirectional shunt-based measurement with ±0.5% gain error and 0.6 µV/LSB resolution. This capability is explicitly enabled in the Premium (P) variant and distinguishes it from the Advanced (A) variant (e.g., MC33772CTA2AE), which omits current sensing.
What communication interfaces does the MC33772CTP2AE support?
The MC33772CTP2AE supports transformer physical layer (TPL) daisy-chain communication at 2.0 Mbit/s using differential RDTX_OUT+/− and SI/RDTX_IN+/− pins. It does not support SPI in this variant - the SPI_COM_EN pin must be grounded to enable TPL mode. The TPL interface provides galvanic isolation without external components and scales to 63 nodes.
Is the MC33772CTP2AE qualified for automotive applications?
Yes, the MC33772CTP2AE is AEC-Q100 Grade 1 qualified (−40 °C to +105 °C ambient) and designed to support ISO 26262 ASIL D safety goals. Its robustness against voltage transients (40 V), thermal shutdown (170 °C), and comprehensive fault detection (open/short/leakage) make it suitable for HEV/EV battery pack monitoring and other safety-critical automotive systems.
What is the role of the VCOM, VANA, and VPRE pins on the MC33772CTP2AE?
VCOM (5.0 V, 5 mA) powers external circuitry like level shifters or sensors; VANA (2.65 V) serves as the precision analog supply for ADC references; VPRE (5.0–6.5 V) regulates internal supplies and requires a 470 nF decoupling capacitor. All three are independently monitored for undervoltage/overvoltage faults with configurable timers and hysteresis - critical for fail-safe BMS operation.
MC33772CTP2AE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 48-LQFP Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Battery Cell Controller
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- 3 ~ 6
- Fault Protection:
- Over/Under Voltage
- Interface:
- I2C, SPI
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-HLQFP (7x7)
MC33772CTP2AE FAQ
1.How can I place an order for MC33772CTP2AE through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33772CTP2AE 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 MC33772CTP2AE reliable?
The price and inventory of MC33772CTP2AE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33772CTP2AE is usually 5 days.
3.What payment methods are accepted for MC33772CTP2AE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33772CTP2AE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33772CTP2AE?
MC33772CTP2AE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33772CTP2AE 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 MC33772CTP2AE?
For technical support, including MC33772CTP2AE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33772CTP2AE requirements.
6.How does Aetrix verify that MC33772CTP2AE is sourced from the original manufacturer or authorized distributors?
All MC33772CTP2AE 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 MC33772CTP2AE meets industry standards.
7.What is the process for return or replacement of MC33772CTP2AE?
All MC33772CTP2AE units undergo pre-shipment inspection (PSI). If there is an issue with MC33772CTP2AE, 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 MC33772CTP2AE part is unused and in its original packaging.
Return procedure for MC33772CTP2AE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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