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NXP Semiconductors PCA9452AHNE
- Part No.:
- PCA9452AHNE
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
PCA9452AHNE.pdf
- Description:
- PCA9452AHNE
- Quantity:
- Payment:
- Shipping:
Inventory:260
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Product details
Overview
PCA9452AHNE 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 PCA9452AHNE datasheet, PCA9452AHNE pinout, PCA9452AHNE application, or PCA9452AHNE equivalent, key selection considerations include DVS-capable buck regulation (BUCK1/BUCK2/BUCK3), remote sense capability on three buck outputs, LDO1's always-on 1.8 V SNVS supply, HVQFN56 thermal performance, and Fm+ 1 MHz I²C control interface compliance.
Technical Context
The PCA9452AHNE implements a hierarchical power sequencing architecture with eight defined states (OFF, READY, SNVS, RUN, STANDBY, PWRDN, PWRUP, FAULT_SD), controlled via PMIC_ON_REQ and PMIC_STBY_REQ inputs. Its dual-phase BUCK1/BUCK3 configuration delivers 6 A at 0.85 V with 12.5 mV programmable steps and supports dynamic voltage scaling between RUN and STANDBY modes.
Regulator control is fully I²C-configurable (Fm+, 1 MHz), with fault monitoring across all six bucks and five LDOs - including UVLO, overcurrent, and thermal shutdown detection. The integrated 2-channel bidirectional level translator operates between 1.8 V (VINT domain) and 3.3 V (SWIN domain), supporting I²C signal translation for SD card interfaces without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Buck Regulators | Six high-efficiency DC-DC converters: BUCK1/BUCK3 dual-phase (6 A), BUCK2 (3 A), BUCK4 (3 A), BUCK5/BUCK6 (2 A each) |
| LDO Outputs | 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 and SW_EN control |
| Oscillator Driver | 32.768 kHz crystal oscillator driver with buffered CLK_32K_OUT output referenced to LDO1 |
| I²C Interface | Fm+ (Fast-mode Plus) compliant, 1 MHz maximum clock rate, used for register configuration and fault monitoring |
| Operating Temp | –40 °C to +105 °C ambient, qualified per AEC-Q100 Grade 2 for automotive under-hood applications |
| Package | HVQFN56, 8 mm × 8 mm, 0.5 mm pitch, thermally enhanced exposed pad (EP) |
Pinout & Package
HVQFN56 package: 8 mm × 8 mm body, 0.5 mm pitch, 56-terminal thermally enhanced quad flat no-lead with exposed thermal pad (EP). Designed for automotive PCB reliability with Type 3 board compatibility and optimized thermal dissipation via EP soldering to internal ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LDO1 (Pin 3) | Always-on SNVS power output | Supplies 1.8 V to secure non-volatile storage; remains active whenever INL1 is valid; enables RTC_RESET_B and CLK_32K_OUT |
| BUCK1/BUCK3 LX1/LX3 (Pins 36–37, 31–32) | Dual-phase switching nodes | Carry high-current pulsed waveforms for combined 6 A output; require low-ESR ceramic output capacitors and careful layout for EMI control |
| PMIC_ON_REQ (Pin 39) | Power-on enable input | Active-high signal initiating full power-up sequence (PWRUP mode); debounced with programmable tON_DEB (default 20 ms) |
| R_SNSP1/R_SNSP2/R_SNSP3_CFG (Pins 38, 44, 30) | Buck remote sense inputs | Compensate for IR drop between regulator output and SoC power pins; required for BUCK1, BUCK2, and BUCK3 when remote sensing is enabled |
| SCLH/SDAH (Pins 25, 24) | High-side I²C level translator outputs | Translate SCL/SDA signals from 1.8 V (VINT domain) to 3.3 V (SWIN domain) for SD card interface; support bidirectional operation |
| CLK_32K_OUT (Pin 7) | 32.768 kHz CMOS clock output | Buffered oscillator output powered by LDO1; drives real-time clock circuitry with 10 ms enable time after LDO1 POK |
Key Features
| Feature | Design Value |
|---|---|
| Dual-phase BUCK1/BUCK3 | Delivers 6 A at 0.85 V with 12.5 mV fine-grained DVS steps; reduces output ripple and improves transient response vs. single-phase 3 A solutions |
| Remote Sense Support | Three buck regulators (BUCK1, BUCK2, BUCK3) include dedicated R_SNSP pins to maintain ±1% output accuracy at SoC VDD pins despite PCB trace resistance |
| Always-on LDO1 | 10 mA, 1.8 V LDO powered directly from INL1; maintains SNVS domain, RTC_RESET_B assertion, and 32.768 kHz buffer during all power modes except OFF |
| Configurable Power Sequencing | Eight-state FSM (OFF → READY → SNVS → PWRUP → RUN → STANDBY → PWRDN → FAULT_SD) with programmable tSTEP (2 ms), tPOR_B (20 ms), and fault timeouts |
| Integrated Level Translator | 2-channel auto-direction-sensing transceiver translating between 1.8 V (VINT) and 3.3 V (SWIN); eliminates external I²C level shifters for SD card interface |
| Thermal & Fault Protection | Comprehensive monitoring: UVLO on VSYS, overcurrent on all bucks, thermal shutdown (TJSHDN), and latched VR fault status with maskable interrupts |
Applications
| Automotive Infotainment Head Unit | Heads-Up Display (HUD) System |
|---|---|
Use Scenario: Central multimedia unit powering i.MX 93x SoC, DDR memory, audio codec, and display interface in vehicle dashboards. IC Role / Device Role / Timing Role: Primary PMIC supplying VDD_SOC (0.85 V), VDDQ_DDR (0.6 V), NVCC_1V8 (1.8 V), and NVCC_3V3 (3.3 V) with synchronized power-up sequencing. Use Value: Enables AEC-Q100-compliant power delivery with DVS for CPU frequency scaling and remote sense compensation for stable SoC operation under vibration and temperature cycling. |
Use Scenario: Compact HUD controller requiring low-noise, tightly regulated supplies for laser drivers, image processing, and micro-display interface. IC Role / Device Role / Timing Role: Single-chip power source delivering 0.8 V (LDO2), 1.8 V (LDO3), 3.3 V (BUCK4), and 1.1 V (BUCK6) with <2 ms inter-rail timing control. Use Value: Eliminates discrete LDOs and sequencers; integrated 32.768 kHz buffer provides precise timing reference for HUD synchronization without external crystal circuitry. |
| Automotive GPS Navigation Module | In-Vehicle Monitoring System |
Use Scenario: GNSS receiver module integrating i.MX 93x with RF front-end, flash storage, and CAN interface in telematics control units. IC Role / Device Role / Timing Role: Supplies NVCC_SD2 (1.8 V/3.3 V via SD_VSEL), VDD_ANA_1P8 (1.8 V), and VDD_ANA_0P8 (0.8 V) while managing SD card power via 400 mA load switch. Use Value: Built-in SD card load switch with active discharge ensures safe hot-plug operation; LDO5 voltage select simplifies dual-voltage SDIO support without external logic. |
Use Scenario: Cabin camera or sensor fusion ECU capturing video, radar data, and environmental telemetry in ADAS domains. IC Role / Device Role / Timing Role: Powers image signal processor (VDD_SOC), DDR memory (VDD2_DDR), and analog sensors (VDD_ANA_0P8/VDD_ANA_1P8) with fault-detectable rail monitoring. Use Value: Latched VR fault registers (VRFLT1_STS/VRFLT2_STS) enable diagnostic logging of undervoltage events; thermal warning allows predictive throttling before shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9450A | Four-buck, four-LDO PMIC for i.MX 8 series; lacks dual-phase buck, 32.768 kHz driver, and SNVS-optimized LDO1 | Targeted at i.MX 8M Mini/QuadLite; not validated for i.MX 93x power tree or AEC-Q100 Grade 2 automotive requirements | Select PCA9452AHNE for i.MX 93x designs requiring dual-phase 6 A core supply, always-on SNVS, and integrated crystal driver. |
| MPQ4436-AEC1 | Single 6 A automotive buck converter (no LDOs, no I²C, no sequencing logic); requires external PMIC or discrete regulators | Used as secondary high-current rail only; cannot replace PCA9452AHNE's full-system power management functionality | PCA9452AHNE consolidates six bucks, five LDOs, level translation, and sequencing into one AEC-Q100-qualified IC - reducing BOM count and layout complexity. |
Compared with PCA9450A and MPQ4436-AEC1, the PCA9452AHNE uniquely integrates dual-phase core regulation, SNVS-domain persistence, and 32.768 kHz timing in a single AEC-Q100 Grade 2 package - eliminating need for supplemental regulators, sequencers, or crystal buffers in i.MX 93x automotive platforms.
Availability
PCA9452AHNE is available at Aetrix Electronics and suitable for automotive infotainment, heads-up display (HUD), and GPS navigation systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PCA9452AHNE 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 ARM-based application processors and power management.
The PCA9452AHNE belongs to NXP's i.MX 93-specific PMIC product line, designed to deliver complete, AEC-Q100-compliant power subsystems for next-generation automotive edge computing - emphasizing integration, thermal robustness, and functional safety-aware sequencing.
FAQ
What is the primary function of the PCA9452AHNE in an i.MX 93x system?
The PCA9452AHNE serves as the dedicated power management IC for the i.MX 93x application processor, providing all required voltage rails - including dual-phase 6 A core supply (VDD_SOC), DDR memory power (VDDQ_DDR), SNVS domain (1.8 V LDO1), and SD card interface (3.3 V load switch). It executes precise power-up/down sequencing, dynamic voltage scaling, and fault monitoring per AEC-Q100 Grade 2 requirements. The PCA9452AHNE replaces multiple discrete regulators and controllers with a single, automotive-qualified solution.
Does the PCA9452AHNE support dynamic voltage scaling (DVS), and which regulators implement it?
Yes, the PCA9452AHNE supports DVS on BUCK1, BUCK2, and BUCK3 - enabling voltage adjustment between RUN and STANDBY modes to optimize power efficiency during varying CPU workloads. BUCK1 and BUCK3 operate in dual-phase configuration (0.85 V default), while BUCK2 runs independently (0.6 V default). DVS is controlled via I²C-accessible BUCK123_DVS registers and triggered by the PMIC_STBY_REQ signal. The PCA9452AHNE does not support DVS on BUCK4, BUCK5, or BUCK6.
How is the 32.768 kHz crystal oscillator implemented in the PCA9452AHNE?
The PCA9452AHNE integrates a dedicated 32.768 kHz crystal oscillator driver with XTAL_IN (Pin 10) and XTAL_OUT (Pin 11) terminals, plus a buffered CMOS output CLK_32K_OUT (Pin 7) powered by LDO1. The oscillator starts in SNVS mode after LDO1 reaches regulation, with t32K_EN = 10 ms. The PCA9452AHNE supports both crystal and internal RC oscillator modes, with automatic transition to crystal output after RTC_RESET_B release. No external buffer or driver IC is needed.
What is the role of the LDO1 output in the PCA9452AHNE, and why is it always-on?
LDO1 (Pin 3) delivers a fixed 1.8 V output with 10 mA capability and remains active whenever INL1 input voltage is valid - even in OFF, READY, and SNVS modes. This persistent supply powers the Secure Non-Volatile Storage (SNVS) domain, RTC_RESET_B (Pin 6), and CLK_32K_OUT (Pin 7). Its always-on behavior ensures real-time clock integrity and secure boot readiness independent of main SoC power state. The PCA9452AHNE relies on LDO1 stability for system-level reset coordination and timing continuity.
Can the PCA9452AHNE be used outside automotive applications, such as industrial or consumer designs?
The PCA9452AHNE is specifically qualified to AEC-Q100 Grade 2 (–40 °C to +105 °C) and optimized for i.MX 93x automotive use cases - including fault reporting, thermal protection, and sequencing robustness under harsh conditions. While its electrical specs may function in industrial environments, NXP does not characterize or guarantee performance outside automotive qualification. For non-automotive i.MX platforms, alternate PMICs like PCA9450A or PCA9451 are recommended. The PCA9452AHNE's design intent, validation, and documentation are strictly automotive-focused.
PCA9452AHNE 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, Wettable Flank
- Supplier Device Package:
- 56-HVQFN-EP (8x8)
PCA9452AHNE FAQ
1.How can I place an order for PCA9452AHNE through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9452AHNE 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 PCA9452AHNE reliable?
The price and inventory of PCA9452AHNE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9452AHNE is usually 5 days.
3.What payment methods are accepted for PCA9452AHNE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9452AHNE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9452AHNE?
PCA9452AHNE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9452AHNE 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 PCA9452AHNE?
For technical support, including PCA9452AHNE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9452AHNE requirements.
6.How does Aetrix verify that PCA9452AHNE is sourced from the original manufacturer or authorized distributors?
All PCA9452AHNE 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 PCA9452AHNE meets industry standards.
7.What is the process for return or replacement of PCA9452AHNE?
All PCA9452AHNE units undergo pre-shipment inspection (PSI). If there is an issue with PCA9452AHNE, 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 PCA9452AHNE part is unused and in its original packaging.
Return procedure for PCA9452AHNE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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