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NXP Semiconductors MC35XS3400CPNA
- Part No.:
- MC35XS3400CPNA
- Manufacturer:
- NXP Semiconductors
- Package:
- 24-PowerQFN
- Datasheet:
-
MC35XS3400CPNA.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:4 24PQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,543
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Product details
Overview
MC35XS3400CPNA from NXP Semiconductors is a quad high-side switch IC designed for automotive lighting control, integrating four 35 mΩ (at 25 °C) protected MOSFETs, 8 MHz SPI interface, programmable slew rate, analog current/temperature feedback, and Fail-safe mode for MCU failure resilience. It drives up to four 28 W bulbs or LEDs in low-voltage vehicle systems.
For engineers reviewing the MC35XS3400CPNA datasheet, MC35XS3400CPNA pinout, MC35XS3400CPNA application, or MC35XS3400CPNA equivalent, key selection considerations include its 6.0–20 V operating range, 150 °C junction temperature rating, daisy-chain SPI capability, openload detection for both OFF and ON states, and configurable overcurrent trip levels via register programming.
Technical Context
The MC35XS3400CPNA implements SMARTMOS technology with integrated gate drivers, thermal protection, and programmable fault management logic. Its four independent high-side outputs support parallel direct-input (IN0–IN3) or SPI-controlled PWM operation using either internal calibratable oscillator or external clock on IN0.
Functional safety features include time-limited autoretry on overcurrent/overtemperature faults, wake-up input with clamp protection, watchdog timeout (217–400 ms), and Fail-safe mode activated via FSI pin-ensuring defined output behavior during MCU loss-of-communication or reset events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RDS(on) (25 °C) | 35 mΩ per channel at VPWR = 13 V - enables efficient 6 A continuous load switching with minimal power loss and thermal rise |
| Supply Range | VPWR: 6.0–20 V (fully operational); extended mode down to 4.0 V - supports cold-crank and battery-dip conditions in automotive environments |
| SPI Interface | 8.0 MHz, 16-bit, 3.3 V/5.0 V compatible with daisy-chain capability - allows compact multi-device control without additional GPIOs |
| Output Slew Rate | Selectable fast/medium/slow rising/falling rates (0.1–1.6 V/μs) - reduces EMI during LED/bulb turn-on/off transitions |
| Fault Detection | Programmable overcurrent thresholds (3.2–54.5 A), blanking time (≤20 μs), and autoretry period (105–195 ms) - balances responsiveness and false-trigger immunity |
| Current Sensing | Analog CSNS output with selectable ratio (1/4300 or 1/25800) and ±12% accuracy at 2.5 A - enables real-time load monitoring and diagnostics without external shunt |
| Thermal Protection | Overtemperature shutdown at 155–195 °C with prewarning at 110–140 °C - prevents latch-up while supporting safe derating strategies |
Pinout & Package
MC35XS3400CPNA is housed in a 24-pin PQFN package (FK suffix, Pb-free) with exposed thermal pad, optimized for automotive under-hood thermal performance and board space efficiency.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HS0–HS3 (Pins 18, 19, 21, 22) | High-side power outputs | Protected 35 mΩ switches driving loads to VPWR; each supports independent PWM, openload, and short-to-battery detection |
| CSNS (Pin 1) | Analog current/temperature monitor | Single-pin multiplexed output delivering voltage proportional to selected HSx current or GND flag temperature - simplifies MCU ADC usage |
| IN0–IN3 (Pins 2, 3, 5, 6) | Direct control inputs | Enable hardware-level ON/OFF control bypassing SPI; IN0 also serves as external PWM clock input |
| FS (Pin 7) | Open-drain fault status | Active-low signal reporting combined fault condition (OC, OT, SC, UV); requires external pull-up to VDD |
| FSI (Pin 24) | Fail-safe enable input | Configures watchdog timeout behavior; when pulled low, forces HSx outputs into predefined state upon MCU communication loss |
| SCLK/CS/SI/SO (Pins 11–12, 10, 16) | SPI interface signals | Full-duplex 16-bit SPI with chip select and daisy-chain support - enables scalable control of multiple devices on one bus |
| VPWR (Pin 15) | Main power supply | Battery-referenced input (41 V max clamp) powering all high-side channels and internal regulators - withstands load dump transients |
| VDD (Pin 13) | Digital supply | 3.0–5.5 V logic supply for SPI interface and control logic - decoupled from VPWR for noise isolation |
Key Features
| Feature | Design Value |
|---|---|
| Quad 35 mΩ high-side switches | Enables simultaneous control of four 28 W lighting loads with <1.5 W conduction loss per channel at 5 A |
| Programmable slew rate | Three selectable rise/fall profiles reduce radiated emissions during switching - critical for CISPR 25 Class 5 compliance |
| Fail-safe mode with FSI | Guarantees defined output states (ON/OFF) during MCU failure or SPI bus interruption - meets ASIL-B functional safety requirements |
| Integrated analog current sensing | Eliminates need for external shunt resistors and amplifiers - reduces BOM count and PCB area while enabling per-channel diagnostics |
| Openload detection (ON/OFF) | Distinguishes between disconnected bulb, LED open-circuit, and short-to-battery - improves diagnostic coverage for ISO 26262 DIA |
| Calibratable internal PWM oscillator | ±10% accuracy after calibration supports flicker-free dimming without external clock source - lowers system cost and complexity |
Applications
| Front Fog Lamp Control | Rear Combination Lamp |
|---|---|
Use Scenario: Independent switching and PWM dimming of front fog lamps in modern vehicle lighting modules. IC Role / Device Role / Timing Role: Quad high-side driver managing four lamp circuits with synchronized fault reporting and thermal derating. Use Value: Enables adaptive beam shaping via software-controlled brightness and rapid fault isolation - reducing warranty claims from lamp failures. | Use Scenario: Integrated control of brake, tail, reverse, and turn-signal LEDs in rear lamp assemblies. IC Role / Device Role / Timing Role: High-side switch providing ON-state openload detection for LED strings and short-to-battery protection during assembly. Use Value: Eliminates need for discrete fuses and relays - cuts assembly time and improves end-of-line test coverage for LED continuity. |
| Interior Ambient Lighting | Adaptive Headlamp System (AHS) |
Use Scenario: Smooth dimming and color-mixing control of RGB ambient lighting zones in dashboard and door panels. IC Role / Device Role / Timing Role: SPI-configurable PWM generator with programmable slew rate and current feedback for closed-loop brightness regulation. Use Value: Achieves <1% current matching across channels - ensures uniform luminance without visible banding or stepping artifacts. | Use Scenario: Driving individual LED segments in matrix headlamps requiring precise current control and thermal monitoring. IC Role / Device Role / Timing Role: High-reliability high-side switch with junction temperature prewarning and autoretry for transient overloads. Use Value: Supports dynamic beam masking by enabling/disabling segments within 85 μs - meeting UNECE R149 response time requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33883G | Triple high-side switch (3× 30 mΩ), no integrated current sense, SPI only (no direct IN pins), lower max VPWR (28 V) | Lacks fourth channel and analog CSNS feedback - requires external sensing for diagnostics | Choose when three-channel control suffices and cost-per-channel is prioritized over diagnostic richness |
| TPS4H160-Q1 | Quad high-side (4× 160 mΩ), no programmable slew rate, no daisy-chain SPI, higher RDS(on), integrated charge pump | Higher conduction loss limits use to <2 A loads; lacks fine-grained fault blanking and autoretry configuration | Prefer for simpler 12 V systems where thermal margin is ample and advanced diagnostics are not required |
Compared with MC33883G and TPS4H160-Q1, the MC35XS3400CPNA delivers superior diagnostic granularity (per-channel current/temperature feedback), EMI control (programmable slew), and functional safety robustness (Fail-safe mode), making it optimal for ASIL-B-compliant lighting modules demanding full fault coverage.
Availability
MC35XS3400CPNA is available at Aetrix Electronics and suitable for automotive lighting control, body electronics modules, and ADAS peripheral power management requiring stable component supply, long-term lifecycle support, and AEC-Q100 Grade 1 qualification.
Supply support for MC35XS3400CPNA 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 automotive-grade mixed-signal ICs.
The MC35XS3400CPNA belongs to NXP's SMARTMOS high-side switch family, engineered specifically for intelligent, fault-resilient control of automotive lighting loads - emphasizing diagnostic completeness, EMC robustness, and functional safety compliance.
FAQ
What is the maximum continuous output current supported by the MC35XS3400CPNA?
The MC35XS3400CPNA supports up to 6 A continuous output current per channel, limited by thermal design and junction temperature (TJ ≤ 150 °C). At 25 °C ambient and with adequate PCB copper pour, sustained 5 A operation is achievable. The device includes overtemperature shutdown (155–195 °C) and autoretry to prevent permanent damage during overload events. Actual current capability depends on VPWR voltage, PCB layout, and airflow - refer to thermal addendum Rev 2.0 for derating curves.
Does the MC35XS3400CPNA support daisy-chaining via SPI?
Yes, the MC35XS3400CPNA supports daisy-chain SPI configuration: the SO pin of one device connects to the SI pin of the next, allowing multiple MC35XS3400CPNA units to share a single SPI bus with individual CS lines. This reduces MCU GPIO usage and simplifies wiring in multi-zone lighting controllers. Each device retains independent register access and fault reporting through its dedicated FS pin.
How does the Fail-safe mode function in the MC35XS3400CPNA?
The Fail-safe mode in the MC35XS3400CPNA activates when the FSI pin is pulled low, causing HS0–HS3 outputs to assume preconfigured states (ON or OFF) upon loss of SPI communication or MCU reset. This behavior is programmed via registers before deployment and remains active until FSI is released. It ensures predictable lamp behavior - e.g., keeping parking lights ON - during MCU failure, satisfying ASIL-B functional safety goals.
Can the MC35XS3400CPNA drive both incandescent bulbs and LEDs?
Yes, the MC35XS3400CPNA is explicitly designed for dual-load compatibility: its openload detection distinguishes between bulb filaments (ON-state detection >100 mA) and LEDs (ON-state detection >2.5 mA), while its programmable inrush handling accommodates bulb cold-resistance surges. The 35 mΩ RDS(on) minimizes voltage drop for 12 V LED strings, and slew rate control suppresses EMI during LED switching - validated in NXP's typical applications section for both load types.
What is the purpose of the CSNS pin on the MC35XS3400CPNA?
The CSNS pin on the MC35XS3400CPNA provides multiplexed analog feedback: it outputs a voltage proportional either to the current through a selected HSx channel (via programmable current sense ratio 1/4300 or 1/25800) or to the die temperature measured at the GND flag. This eliminates external sensing components, enabling real-time load monitoring, thermal derating, and fault classification (e.g., distinguishing overcurrent from short-circuit) using a single MCU ADC input.
MC35XS3400CPNA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 24-PowerQFN
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Switch Type:
- General Purpose
- Number of Outputs:
- 4
- Ratio - Input:Output:
- 1:4
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- SPI
- Voltage - Load:
- 6V ~ 20V
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Current - Output (Max):
- 6A
- Rds On (Typ):
- 35mOhm (Max)
- Input Type:
- -
- Features:
- Internal PWM, Slew Rate Controlled, Watchdog Timer
- Fault Protection:
- Current Limiting (Fixed), Open Load Detect, Over Temperature, Over Voltage
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-PQFN (12x12)
MC35XS3400CPNA FAQ
1.How can I place an order for MC35XS3400CPNA through Aetrix?
Please submit a Request for Quotation (RFQ) for MC35XS3400CPNA 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 MC35XS3400CPNA reliable?
The price and inventory of MC35XS3400CPNA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC35XS3400CPNA is usually 5 days.
3.What payment methods are accepted for MC35XS3400CPNA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC35XS3400CPNA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC35XS3400CPNA?
MC35XS3400CPNA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC35XS3400CPNA 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 MC35XS3400CPNA?
For technical support, including MC35XS3400CPNA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC35XS3400CPNA requirements.
6.How does Aetrix verify that MC35XS3400CPNA is sourced from the original manufacturer or authorized distributors?
All MC35XS3400CPNA 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 MC35XS3400CPNA meets industry standards.
7.What is the process for return or replacement of MC35XS3400CPNA?
All MC35XS3400CPNA units undergo pre-shipment inspection (PSI). If there is an issue with MC35XS3400CPNA, 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 MC35XS3400CPNA part is unused and in its original packaging.
Return procedure for MC35XS3400CPNA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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