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NXP Semiconductors MC35XS3400CPNAR2
- Part No.:
- MC35XS3400CPNAR2
- Manufacturer:
- NXP Semiconductors
- Package:
- 24-PowerQFN
- Datasheet:
-
MC35XS3400CPNAR2.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:4 24PQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,358
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Product details
Overview
MC35XS3400CPNAR2 from NXP Semiconductors is a quad high-side switch IC designed for automotive lighting control, integrating four 35 mΩ (at 25 °C) protected MOSFETs capable of driving four 28 W bulbs or LEDs. It operates from 6.0 V to 20 V (extended mode: 4.0–28 V), features 8.0 MHz SPI interface with daisy-chain capability, and supports programmable slew rate, PWM control via IN0 or internal oscillator, and Fail-safe mode for MCU failure recovery.
For engineers reviewing the MC35XS3400CPNAR2 datasheet, MC35XS3400CPNAR2 pinout, MC35XS3400CPNAR2 application, or MC35XS3400CPNAR2 equivalent, key selection criteria include its quad-channel 35 mΩ RDS(on), SPI-configurable fault trip levels and lamp inrush duration, analog current/temperature feedback via CSNS, and compliance with automotive EMC requirements through selectable output slew rate.
Technical Context
The MC35XS3400CPNAR2 implements SMARTMOS technology with integrated gate drivers, thermal and overcurrent protection, and a calibratable internal oscillator for PWM generation. Its architecture includes independent per-channel diagnostics-openload detection (ON/OFF), short-to-battery sensing, and severe short-circuit impedance detection down to 70 mΩ-managed via SPI registers and reported through FS pin or CSNS analog output.
Control is dual-path: direct parallel inputs (IN0–IN3) enable immediate channel switching without MCU intervention, while the 16-bit SPI interface provides full configuration of protection thresholds, PWM timing, slew rate (SR[1:0]), and Fail-safe behavior. The device enters low-power Sleep mode (<5.0 μA VPWR supply current at 25 °C) when all inputs are low and RST/WAKE inactive.
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 drive with minimal power loss and thermal rise |
| Supply range | 6.0–20 V operational; extended 4.0–28 V - supports cold-crank (4 V) and load-dump (41 V clamp) conditions in automotive systems |
| SPI speed | Up to 8.0 MHz - allows fast register access and real-time status polling in safety-critical lighting control loops |
| Output slew rate | Selectable fast/medium/slow (0.1–1.6 V/μs) - reduces EMI during switching while maintaining timing predictability |
| Fault reporting | Dedicated open-drain FS pin + SPI-readable registers - enables both hardware interrupt and software diagnostic paths |
| Current sense | Programmable CSNS ratio (1/4300 or 1/25800) with ±5% accuracy at 2.0 A - supports precise closed-loop LED current regulation |
| Fail-safe mode | Enabled via FSI input - maintains pre-programmed HS[0:3] states if MCU fails, critical for functional safety compliance |
Pinout & Package
MC35XS3400CPNAR2 is housed in a 24-pin PQFN package (FK suffix, Pb-free) with exposed thermal pad. Pin layout supports compact automotive PCB routing, with dedicated GND pins (14, 17, 23) for analog/digital separation and VPWR (pin 15) placed adjacent to HS outputs (18, 19, 21, 22) to minimize power loop inductance.
| 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-circuit diagnostics |
| CSNS (pin 1) | Analog current/temperature monitor | Outputs voltage proportional to selected HS channel current or die temperature - enables real-time thermal derating and current limiting |
| IN0–IN3 (pins 2,3,5,6) | Direct control inputs | Enable immediate ON/OFF switching of corresponding HS outputs without SPI transaction - used for emergency override or fast-response lighting |
| FS (pin 7) | Fault status output | Open-drain active-low signal indicating any fault (OC, OT, OL, UV); requires external pull-up to VDD for system-level interrupt |
| FSI (pin 24) | Fail-safe enable input | When pulled low, activates Fail-safe mode - preserves last valid HS[0:3] state upon MCU failure or watchdog timeout |
| SCLK/CS/SI/SO (pins 11,10,12,16) | SPI interface | Full-duplex 16-bit SPI with daisy-chain support - allows multi-device control with single MCU SPI port and minimal GPIO usage |
| VPWR (pin 15) | Main power supply | Connects directly to battery rail; integrates clamp diode (41 V) and undervoltage lockout (3.3–4.3 V threshold) for robustness |
| VDD (pin 13) | Digital supply | 3.0–5.5 V logic supply; powers SPI interface and internal logic - decoupling required near pin for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Quad 35 mΩ high-side switches | Enables simultaneous control of four 28 W incandescent bulbs or high-brightness LED strings with <1.5 W conduction loss per channel at 5 A |
| Programmable fault current trip levels | 10 configurable OC thresholds (3.2–54.5 A) allow precise matching to load inrush and steady-state profiles - prevents nuisance tripping during bulb warm-up |
| Selectably calibrated internal oscillator | Generates stable 84–156 Hz default PWM frequency with ±10% accuracy - eliminates need for external clock source in basic dimming applications |
| Independent ON/OFF openload detection | Detects broken filaments (OFF state) or disconnected LEDs (ON state) within 270 μs - ensures lighting system integrity without external circuitry |
| Smart autoretry with time-limited shutdown | After overcurrent or overtemperature fault, attempts automatic recovery for 105–195 ms before latching off - balances fault containment with system availability |
Applications
| Front Fog Lamps | Rear Combination Lamps |
|---|---|
Use Scenario: Independent control of fog lamp intensity and on/off sequencing in adverse weather, with diagnostics for filament breakage. IC Role / Device Role / Timing Role: Quad high-side switch managing four separate lamp circuits; SPI-configured PWM dimming and real-time current monitoring via CSNS. Use Value: Eliminates discrete relays and current-sense amplifiers; enables adaptive brightness based on vehicle speed and ambient light via MCU feedback loop. | Use Scenario: Integrated control of brake, tail, turn, and reverse lamps in compact rear lamp housing with shared PCB space. IC Role / Device Role / Timing Role: High-side driver providing independent channel switching, short-to-battery detection, and fail-safe hold-on during CAN bus interruption. Use Value: Reduces BOM count by 7+ components per lamp module; meets ECE R7 and SAE J1455 EMC requirements via programmable slew rate. |
| LED Daytime Running Lights (DRL) | Interior Ambient Lighting |
Use Scenario: Precise current-regulated dimming of multi-segment DRL arrays across temperature ranges, with thermal foldback to prevent LED degradation. IC Role / Device Role / Timing Role: Current-sense enabled high-side driver using CSNS feedback and internal temperature sensor to adjust PWM duty cycle dynamically. Use Value: Maintains consistent luminous flux over -40 °C to +125 °C ambient; eliminates external thermistors and op-amp current loops. | Use Scenario: Soft-start and fade-in/fade-out control of cabin LED strips, with open-circuit detection to flag failed segments during service. IC Role / Device Role / Timing Role: Quad-channel switch supporting independent timing profiles per zone; INx direct inputs enable manual override without MCU involvement. Use Value: Enables seamless human-machine interaction (HMI) lighting effects with <100 μs channel matching; reduces firmware complexity via hardware-based timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33883 | Triple high-side switch (3× 20 mΩ), no integrated PWM oscillator, lower max VPWR (26 V), SPI only (no direct INx control) | Lacks quad channel count and direct-input override; suited for smaller lighting modules with simpler diagnostics | Choose when three channels suffice and external PWM generation is acceptable; not drop-in due to pinout and feature set mismatch |
| TPS4H160-Q1 | Quad high-side switch (4× 160 mΩ), 40 V max VPWR, no CSNS analog feedback, no Fail-safe mode, I²C interface | Higher RDS(on) limits current capability; lacks current/temperature analog monitoring and MCU-failure resilience | Prefer for cost-sensitive non-safety-critical applications where 160 mΩ losses are tolerable and I²C infrastructure exists |
Compared with MC33883 and TPS4H160-Q1, the MC35XS3400CPNAR2 delivers superior thermal performance (35 mΩ vs. 160 mΩ), integrated diagnostics (CSNS, FSI, programmable OC), and automotive-grade robustness (41 V clamp, -40 °C to +125 °C), making it optimal for ASIL-B lighting control where reliability and functional safety are mandatory.
Availability
MC35XS3400CPNAR2 is available at Aetrix Electronics and suitable for front fog lamps, rear combination lamps, LED daytime running lights, and interior ambient lighting requiring stable component supply across automotive production lifecycles.
Supply support for MC35XS3400CPNAR2 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 company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in automotive microcontrollers and power management ICs.
The MC35XS3400CPNAR2 belongs to NXP's SMARTMOS high-side switch product line, engineered specifically for intelligent, diagnostics-rich control of automotive lighting loads while meeting stringent AEC-Q100 Grade 1 requirements.
FAQ
What is the maximum continuous output current rating for each channel of the MC35XS3400CPNAR2?
Each high-side output of the MC35XS3400CPNAR2 supports up to 6 A continuous current, provided the junction temperature remains below 150 °C. This rating assumes proper PCB thermal design (e.g., 2s2p test board per JEDEC JESD51-2) and accounts for RDS(on) increase with temperature - at 150 °C and VPWR = 13 V, RDS(on) rises to 66 mΩ. The MC35XS3400CPNAR2 includes overtemperature shutdown at 155–195 °C to protect against sustained overload.
Does the MC35XS3400CPNAR2 support PWM dimming without an external clock source?
Yes, the MC35XS3400CPNAR2 integrates a calibratable internal oscillator that generates PWM signals with default frequency of 84–156 Hz and ±10% accuracy. When PWM_en = 1 and CLOCK_sel = 1, the device uses this internal clock to drive HS[0:3] outputs - eliminating need for external timing components. External clock injection via IN0 is optional for higher precision or variable-frequency operation.
How does the Fail-safe mode function in the MC35XS3400CPNAR2?
The MC35XS3400CPNAR2 enters Fail-safe mode when the FSI pin is pulled low, preserving the last commanded state of HS[0:3] even if the MCU fails or loses communication. This behavior is enabled independently of SPI configuration and remains active until FSI is released. Fail-safe mode is critical for ASIL-B compliant lighting systems where unintended lamp deactivation poses safety risk.
Can the MC35XS3400CPNAR2 detect open-circuit conditions in both ON and OFF states?
Yes, the MC35XS3400CPNAR2 performs independent openload detection: in OFF state, it sources 30–100 μA through the load and monitors voltage at HSx to detect >2.0 V (indicating open filament); in ON state, it measures current flow and flags <100 mA (incandescent) or <2.5 mA (LED) as open-circuit. Detection times are 270 μs (OFF) and programmable via SPI for ON state.
What package type and RoHS status does the MC35XS3400CPNAR2 use?
The MC35XS3400CPNAR2 uses a 24-pin PQFN package with exposed thermal pad (FK suffix), fully compliant with RoHS Directive 2011/65/EU and halogen-free requirements. The "R2" suffix denotes tape-and-reel packaging (1500 units per reel), and the device meets JEDEC J-STD-020C reflow profile for Pb-free assembly with peak temperature of 260 °C.
MC35XS3400CPNAR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 24-PowerQFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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)
MC35XS3400CPNAR2 FAQ
1.How can I place an order for MC35XS3400CPNAR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC35XS3400CPNAR2 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 MC35XS3400CPNAR2 reliable?
The price and inventory of MC35XS3400CPNAR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC35XS3400CPNAR2 is usually 5 days.
3.What payment methods are accepted for MC35XS3400CPNAR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC35XS3400CPNAR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC35XS3400CPNAR2?
MC35XS3400CPNAR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC35XS3400CPNAR2 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 MC35XS3400CPNAR2?
For technical support, including MC35XS3400CPNAR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC35XS3400CPNAR2 requirements.
6.How does Aetrix verify that MC35XS3400CPNAR2 is sourced from the original manufacturer or authorized distributors?
All MC35XS3400CPNAR2 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 MC35XS3400CPNAR2 meets industry standards.
7.What is the process for return or replacement of MC35XS3400CPNAR2?
All MC35XS3400CPNAR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC35XS3400CPNAR2, 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 MC35XS3400CPNAR2 part is unused and in its original packaging.
Return procedure for MC35XS3400CPNAR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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