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NXP Semiconductors PCA9452AHNK
- Part No.:
- PCA9452AHNK
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
PCA9452AHNK.pdf
- Description:
- PCA9452AHNK
- Quantity:
- Payment:
- Shipping:
Inventory:1,445
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Product details
Overview
PCA9452AHNK from NXP Semiconductors is an AEC-Q100 Grade 2 automotive Power Management IC (PMIC) engineered exclusively for the i.MX 93x application processor. It integrates six step-down regulators (including a 6 A dual-phase buck), five LDOs, a 400 mA load switch, 2-channel I²C level translator, and a 32.768 kHz crystal oscillator driver - all operating across –40 °C to +105 °C ambient. It powers critical SoC rails (VDD_SOC, VDDQ_DDR, NVCC_1V8), DRAM, and SD card in automotive infotainment systems.
For engineers reviewing the PCA9452AHNK datasheet, PCA9452AHNK pinout, PCA9452AHNK application, or PCA9452AHNK equivalent, key selection considerations include DVS support on BUCK1/BUCK2/BUCK3, remote sense capability for IR-drop compensation, LDO1's always-on 1.8 V SNVS supply, HVQFN56 thermal performance, and Fm+ 1 MHz I²C interface compliance with automotive timing constraints.
Technical Context
The PCA9452AHNK implements a hierarchical power sequencing architecture with eight defined states (OFF, READY, SNVS, RUN, STANDBY, PWRDN, PWRUP, FAULT_SD), where SNVS mode enables secure non-volatile storage via always-on LDO1 and RTC clocking. Its dual-phase BUCK1/BUCK3 configuration delivers 6 A at 0.85 V with programmable ramp rates and remote sensing pins (R_SNSP1, R_SNSP3_CFG) for precision load regulation.
Regulator control is fully I²C-configurable (Fm+ 1 MHz), supporting dynamic voltage scaling across three bucks, fault detection with latched VRFLT status registers, and configurable reset behavior (warm/cold) via WDOG_B, PMIC_RST_B, and SW_RST. The integrated 2-channel bidirectional level translator operates between 1.8 V (VINT domain) and 3.3 V (SWIN domain), enabling direct I²C interfacing with SD card controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Buck Regulators | Six high-efficiency step-down converters: BUCK1/BUCK3 dual-phase (6 A), BUCK2 (3 A), BUCK4 (3 A), BUCK5/BUCK6 (2 A each); all support soft-start and OCP. |
| LDOs | Five linear regulators: LDO1 (10 mA, always-on 1.8 V for SNVS), LDO2 (10 mA, 0.8 V), LDO3 (300 mA, 1.8 V), LDO4 (200 mA, 0.8 V), LDO5 (150 mA, selectable 1.8 V/3.3 V). |
| Load Switch | 400 mA SD card power switch with internal active discharge resistor, controlled via SW_EN, SWIN/SWOUT, and I²C. |
| Oscillator & Timing | 32.768 kHz crystal oscillator driver with buffered CLK_32K_OUT output; supports RC fallback and transition timing (t32K_EN = 10 ms). |
| I²C Interface | Fm+ compliant up to 1 MHz; supports register read/write, reset control (SW_RST), fault monitoring (VRFLT1/2_STS), and DVS configuration. |
| Operating Range | –40 °C to +105 °C ambient; AEC-Q100 Grade 2 qualified; VSYS UVLO threshold ensures robust startup under automotive battery transients. |
| Package | HVQFN56 (8 mm × 8 mm, 0.5 mm pitch, exposed thermal pad); optimized for automotive thermal dissipation and board space efficiency. |
Pinout & Package
PCA9452AHNK is housed in an 8 mm × 8 mm, 56-pin HVQFN package (SOT684-30) with 0.5 mm pitch and exposed thermal pad (EP) connected internally to PGND. The package supports automotive-grade thermal management and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LDO1 (Pin 3) | Always-on SNVS power rail | Supplies 1.8 V to secure non-volatile storage; remains active whenever INL1 is valid; bypassed with 1 µF capacitor. |
| BUCK1/BUCK3 LX1/LX3 (Pins 36–37, 31–32) | Dual-phase switching nodes | Deliver combined 6 A to VDD_SOC; require external 0.47 µH inductors and 10 µF/22 µF input capacitors per phase. |
| R_SNSP1 (Pin 38), R_SNSP3_CFG (Pin 30) | Remote sense inputs | Compensate for IR drop between regulator output and load; R_SNSP3_CFG tied to GND when BUCK1/BUCK3 operate in dual-phase mode. |
| SDAH/SCLH (Pins 24–25), SDAL/SCLL (Pins 26–27) | Bidirectional level translator I/O | Enable I²C communication between 1.8 V (VINT) and 3.3 V (SWIN) domains; auto-direction sensing eliminates external control logic. |
| PMIC_ON_REQ (Pin 39), PMIC_STBY_REQ (Pin 40) | Power state control inputs | Drive state transitions: HIGH on PMIC_ON_REQ initiates PWRUP; HIGH on both enters STANDBY with DVS-adjusted BUCK1 voltage. |
| CLK_32K_OUT (Pin 7), XTAL_IN/XTAL_OUT (Pins 10–11) | RTC timing interface | Provide buffered 32.768 kHz clock to application processor; crystal oscillator supports fast startup (tRTC_Tran = 1 s) after RTC_RESET_B release. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 2 qualification | Validated for automotive under-hood operation across –40 °C to +105 °C, including thermal shutdown recovery and UVLO hysteresis. |
| Dual-phase BUCK1/BUCK3 architecture | Delivers 6 A at 0.85 V with interleaved switching to reduce input/output ripple and improve transient response for VDD_SOC rail. |
| Configurable DVS on three bucks | Enables runtime voltage adjustment of BUCK1/BUCK2/BUCK3 via single-register writes (BUCK123_DVS), reducing dynamic power during low-load states. |
| Integrated SD card load switch | 400 mA switch with built-in discharge resistor eliminates need for external MOSFET and RC network; controlled by SW_EN or I²C. |
| Secure SNVS power domain | LDO1 provides always-on 1.8 V to SNVS logic and RTC; enables tamper-resistant boot and timekeeping even during system standby or deep sleep. |
| Eight-state power management | Hardware-enforced sequencing (tSTEP = 2 ms, tPOR_B = 20 ms) and fault handling (tFLT_SD_WAIT = 100 ms) ensure deterministic SoC boot and safe shutdown. |
Applications
| Automotive Infotainment Head Unit | Heads-Up Display (HUD) Control Module |
|---|---|
|
Use Scenario: Central multimedia unit powering i.MX 93x SoC, DDR memory, audio codec, and display interfaces in vehicle dashboards. IC Role / Device Role / Timing Role: Primary PMIC delivering sequenced, regulated rails (VDD_SOC, VDDQ_DDR, NVCC_1V8, NVCC_3V3) with DVS for CPU/GPU DVFS and SNVS-backed secure boot. Use Value: Eliminates discrete DC-DC and LDO count; reduces BOM cost and layout area while meeting ASIL-B functional safety timing requirements. |
Use Scenario: Compact HUD controller requiring low-noise analog supplies, precise timing for projection synchronization, and fast wake-up from standby. IC Role / Device Role / Timing Role: Supplies ultra-low-noise 0.8 V (LDO2/LDO4) for analog front-end, 1.8 V (LDO3) for image processing, and 32.768 kHz clock for frame timing alignment. Use Value: Integrated crystal driver and remote-sense bucks minimize jitter and voltage droop during HUD brightness transitions, ensuring stable optical projection. |
| Automotive GPS Navigation System | In-Vehicle Monitoring Camera Hub |
|
Use Scenario: GPS receiver module with GNSS baseband processor, RF front-end, and eMMC storage, deployed in varying thermal environments. IC Role / Device Role / Timing Role: Provides thermally robust 1.1 V (BUCK6) for DDR, 1.8 V (BUCK5) for eMMC I/O, and 3.3 V (BUCK4) for RF bias, with thermal shutdown recovery to SNVS mode. Use Value: AEC-Q100 qualification and –40 °C to +105 °C operation guarantee continuous satellite lock acquisition and position fix reliability in extreme climates. |
Use Scenario: Multi-camera aggregation hub processing video streams from ADAS sensors, requiring synchronized power-up and fault-isolated rail control. IC Role / Device Role / Timing Role: Powers camera ISPs via BUCK2 (0.6 V), memory interfaces via BUCK5 (1.8 V), and SD card via 400 mA load switch; uses IRQ_B for real-time fault reporting. Use Value: Independent rail enable/disable and latched VR fault status allow selective camera reinitialization without full system reset, improving diagnostic uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4332-AEC | Single 6 A buck only; no integrated LDOs, level translator, or crystal driver; requires external sequencing logic. | Targeted at simpler MCU-based clusters; lacks SNVS domain, DVS, or multi-rail coordination for i.MX 93x. | Select when only high-current core rail is needed and system-level PMIC functionality is implemented externally. |
| TPS659413-Q1 | Four bucks (up to 4 A), four LDOs, no integrated crystal driver or level translator; I²C interface limited to 400 kHz. | Designed for Jacinto™ processors; supports different SoC-specific sequencing but not i.MX 93x register map or DVS implementation. | Choose for TI-based platforms; not pin- or firmware-compatible with PCA9452AHNK due to differing rail count, feature set, and register structure. |
Compared with MPQ4332-AEC and TPS659413-Q1, the PCA9452AHNK delivers complete i.MX 93x power subsystem integration - including SNVS, DVS, level translation, and RTC timing - eliminating external components and reducing validation effort for automotive infotainment designs.
Availability
PCA9452AHNK is available at Aetrix Electronics and suitable for automotive infotainment head units, heads-up display (HUD) modules, and GPS navigation systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PCA9452AHNK 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 focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in ARM-based application processors and power management.
The PCA9452AHNK belongs to NXP's i.MX 93x companion PMIC product line, designed specifically to deliver tightly coupled, AEC-Q100-compliant power sequencing, DVS, and secure boot support for next-generation automotive edge computing platforms.
FAQ
What is the primary function of the PCA9452AHNK in an i.MX 93x-based system?
The PCA9452AHNK serves as the dedicated power management IC for the i.MX 93x application processor, providing all required regulated voltage rails - including dual-phase 6 A core supply (VDD_SOC), DDR memory rails (VDDQ_DDR, NVCC_1V8), analog supplies (VDD_ANA_0P8, VDD_ANA_1P8), and peripheral power (NVCC_3V3, SD card) - with hardware-enforced sequencing, DVS, and SNVS domain support. Its integration eliminates the need for multiple discrete regulators in automotive designs.
Does the PCA9452AHNK support dynamic voltage scaling, and which rails are enabled?
Yes, the PCA9452AHNK supports dynamic voltage scaling (DVS) on BUCK1, BUCK2, and BUCK3. These bucks can be configured to output two distinct voltages (DVS0 and DVS1) based on the state of the PMIC_STBY_REQ pin - for example, BUCK1 delivers 0.85 V in RUN mode and a lower voltage in STANDBY mode - enabling real-time power optimization for the i.MX 93x SoC without software intervention.
How does the PCA9452AHNK handle secure non-volatile storage (SNVS) power requirements?
The PCA9452AHNK dedicates LDO1 as an always-on 1.8 V supply for SNVS logic, which remains active whenever INL1 input voltage is valid. This rail powers the RTC, secure boot circuitry, and tamper-detection logic independently of system power states. LDO1's low quiescent current and guaranteed operation down to –40 °C ensure reliable SNVS functionality throughout vehicle lifecycle, even during deep sleep or battery-save modes.
What is the role of the 2-channel level translator in the PCA9452AHNK?
The PCA9452AHNK integrates a bidirectional 2-channel level translator (SDAH/SCLH ↔ SDAL/SCLL) that enables I²C communication between the 1.8 V VINT domain (i.MX 93x core logic) and the 3.3 V SWIN domain (SD card interface). With auto-direction sensing and no external control signals required, it eliminates level-shifting discretes while maintaining signal integrity and timing compliance for high-speed SD card initialization and data transfer.
Can the PCA9452AHNK drive a 32.768 kHz crystal, and what are its timing characteristics?
Yes, the PCA9452AHNK includes a dedicated 32.768 kHz crystal oscillator driver with XTAL_IN and XTAL_OUT pins, plus a buffered CMOS CLK_32K_OUT output referenced to LDO1. After LDO1 reaches regulation, CLK_32K_OUT enables within 10 ms (t32K_EN), and the oscillator transitions from internal RC to crystal source within 1 second (tRTC_Tran), ensuring accurate RTC timing for automotive telematics and infotainment wake-up events.
PCA9452AHNK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 56-VFQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- Processor
- Current - Supply:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-HVQFN-EP (8x8)
PCA9452AHNK FAQ
1.How can I place an order for PCA9452AHNK through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9452AHNK 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 PCA9452AHNK reliable?
The price and inventory of PCA9452AHNK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9452AHNK is usually 5 days.
3.What payment methods are accepted for PCA9452AHNK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9452AHNK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9452AHNK?
PCA9452AHNK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9452AHNK 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 PCA9452AHNK?
For technical support, including PCA9452AHNK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9452AHNK requirements.
6.How does Aetrix verify that PCA9452AHNK is sourced from the original manufacturer or authorized distributors?
All PCA9452AHNK 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 PCA9452AHNK meets industry standards.
7.What is the process for return or replacement of PCA9452AHNK?
All PCA9452AHNK units undergo pre-shipment inspection (PSI). If there is an issue with PCA9452AHNK, 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 PCA9452AHNK part is unused and in its original packaging.
Return procedure for PCA9452AHNK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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