My Inquiry
My Account
NXP Semiconductors PCA9450AAHNY
- Part No.:
- PCA9450AAHNY
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
PCA9450AAHNY.pdf
- Description:
- PMIC FOR I.MX8M MINI 845S 56HVQF
- Quantity:
- Payment:
- Shipping:
Inventory:2,462
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PCA9450AAHNY from NXP Semiconductors is a dedicated Power Management IC (PMIC) for the i.MX 8M Mini application processor, delivering six step-down regulators (including three 3 A DVS-capable buck converters), five LDOs, a 400 mA SD-card load switch, dual-channel I²C level translator, and 32.768 kHz crystal oscillator driver in a 56-pin HVQFN package. It supports DDR4/LPDDR4/DDR3L memory via U-Boot configuration without hardware changes and operates across –40 °C to +105 °C ambient.
For engineers reviewing the PCA9450AAHNY datasheet, PCA9450AAHNY pinout, PCA9450AAHNY application, or PCA9450AAHNY equivalent, key selection considerations include its i.MX 8M Mini-specific power sequencing, remote-sense capability on BUCK1/BUCK2/BUCK3, SNVS-mode LDO1/LDO2 always-on operation, and integrated 32 kHz oscillator driver with buffer output.
Technical Context
The PCA9450AAHNY implements a tightly coupled, application-processor–centric power architecture: BUCK1 (0.85 V, 3 A) powers the SoC core, BUCK2 (0.85 V, 3 A) supplies ARM cores, and BUCK3 (0.85 V, 3 A) delivers GPU/VPU/DRAM power - all with programmable DVS ramping and remote sense compensation. Its LDO1 (1.8 V, 10 mA) and LDO2 (0.85 V, 10 mA) remain active during SNVS mode to sustain secure non-volatile storage and RTC functions.
Power state transitions are controlled via PMIC_ON_REQ and PMIC_STBY_REQ inputs, enabling eight defined modes (OFF, READY, SNVS, RUN, STANDBY, PWRDN, PWRUP, FAULT_SD) with precise timing (e.g., tON_DEB = 20 ms, tSTEP = 2 ms). The integrated 2-channel bidirectional logic translator supports 1.8 V ↔ 3.3 V I²C level shifting between VINT and SWIN domains, while the 400 mA load switch includes active discharge and OCP protection for SD card supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | VSYS: 2.7 V to 5.5 V - supports single-cell Li-ion/Li-polymer battery and 5 V adapter operation. |
| BUCK Regulators | Three 3 A DVS buck regulators (BUCK1/2/3 @ 0.6–2.1875 V, 12.5 mV steps); BUCK4 (3 A, 3.3 V), BUCK5 (2 A, 1.8 V), BUCK6 (2 A, 1.1 V). |
| LDO Outputs | LDO1 (1.8 V, 10 mA), LDO2 (0.85 V, 10 mA) - always-on in SNVS mode; LDO3 (1.8 V, 300 mA), LDO4 (0.9 V, 200 mA), LDO5 (1.8/3.3 V, 150 mA). |
| I²C Interface | Fm+ (Fast-mode Plus) at 1 MHz - enables high-speed register configuration and fault monitoring without bus contention. |
| Crystal Driver | 32.768 kHz oscillator driver with buffered CLK_32K_OUT output - sustains RTC timing during low-power SNVS mode. |
| Operating Temperature | –40 °C to +105 °C ambient - qualified for industrial and extended-temperature embedded applications. |
| Package | HVQFN56, 7 mm × 7 mm, 0.4 mm pitch, 0.85 mm body height - thermal-enhanced for high-density PCB layouts. |
Pinout & Package
HVQFN56 (SOT949-6), 7 mm × 7 mm, 0.4 mm pitch, exposed thermal pad (EP). Designed for optimal thermal dissipation and compact routing in i.MX 8M Mini reference designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LDO1 (Pin 3) | Secure Non-Volatile Storage (SNVS) power rail | 1.8 V, 10 mA output always enabled when INL1 is valid - powers RTC and secure boot circuitry. |
| BUCK1 (Pins 36–37) | SoC core voltage regulator switching node | Drives i.MX 8M Mini VDD_SOC at 0.85 V; supports remote sensing (R_SNSP1, Pin 38) for IR-drop compensation. |
| PMIC_ON_REQ (Pin 39) | Power-on enable input | Active-high signal from processor initiating full power-up sequence; debounced with configurable tON_DEB (20 ms default). |
| SDAH / SCLH (Pins 24–25) | High-side I²C interface | 3.3 V domain pins referenced to SWIN - used for host-side I²C communication with external peripherals. |
| SDAL / SCLL (Pins 26–27) | Low-side I²C interface | 1.8 V domain pins referenced to VINT - connect to i.MX 8M Mini's internal I²C controller for level-translated communication. |
| CLK_32K_OUT (Pin 7) | RTC clock output | CMOS 32.768 kHz output powered by LDO1 - provides stable timebase to processor RTC during SNVS and RUN modes. |
Key Features
| Feature | Design Value |
|---|---|
| Triple 3 A DVS Buck Regulators | BUCK1/2/3 support dynamic voltage scaling with programmable up/down ramping and remote sense - enables adaptive power management for CPU/GPU/DRAM under varying workloads. |
| Always-On SNVS Power Domain | LDO1 and LDO2 remain active during SNVS mode with <10 µA quiescent current - guarantees RTC continuity and secure boot integrity during deep sleep. |
| Integrated I²C Level Translator | 2-channel auto-direction-sensing transceiver (1.8 V ↔ 3.3 V) eliminates need for discrete level shifters - reduces BOM count and layout complexity for SDIO/I²C interfaces. |
| Configurable SD Card Load Switch | 400 mA switch with built-in active discharge resistor and OCP - safely powers NVCC_SD2 rail and discharges residual voltage during hot-plug events. |
| Robust Fault Management | Dedicated VR fault detection, thermal shutdown (TJSHDN), UVLO, and programmable reset behavior (warm/cold) - ensures system reliability across industrial temperature and transient conditions. |
Applications
| i.MX 8M Mini-Based Tablets | Industrial IoT Gateways |
|---|---|
Use Scenario: Portable tablet running Linux with LPDDR4 memory, touchscreen, and Wi-Fi/BT connectivity. IC Role / Device Role / Timing Role: Primary PMIC managing SoC core, GPU, DRAM, peripheral I/O, and RTC timing - executes synchronized power-up/down sequences per i.MX 8M Mini requirements. Use Value: Eliminates need for discrete DC-DCs and LDOs; U-Boot-configurable memory support avoids board respins for DDR variant changes. |
Use Scenario: Fanless edge gateway deployed in factory automation with vibration, wide temperature swings, and long uptime requirements. IC Role / Device Role / Timing Role: Centralized power supervisor providing fault-tolerant regulation, thermal warning, and SNVS-mode RTC hold-up for deterministic boot recovery. Use Value: –40 °C to +105 °C qualification and integrated UVLO/thermal protection ensure uninterrupted operation in uncontrolled environments. |
| Electronic Point-of-Sale (ePOS) | Smart Home Hubs |
Use Scenario: Compact countertop ePOS terminal with barcode scanner, thermal printer, and EMV payment interface. IC Role / Device Role / Timing Role: Single-chip power solution delivering regulated rails for i.MX 8M Mini, secure element, display backlight, and SD card - manages standby-to-wake transitions via PMIC_STBY_REQ. Use Value: Integrated 400 mA load switch enables safe SD card hot-swap; LDO1/LDO2 guarantee secure boot persistence across power cycles. |
Use Scenario: Voice-controlled smart home hub supporting multi-mic array, Zigbee/Z-Wave radios, and local AI inference. IC Role / Device Role / Timing Role: Power orchestrator enabling rapid wake-from-standby (STANDBY → RUN in <100 ms) and selective rail shutdown for ultra-low idle power. Use Value: DVS on BUCK1/2/3 reduces dynamic power during voice processing; 32.768 kHz oscillator maintains accurate timekeeping for scheduled tasks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9450BHN | Supports i.MX 8M Nano; BUCK3 disabled; R_SNSP3_CFG tied to VSYS; no GPU/DRAM rail. | Targeted at lower-cost, lower-performance Nano-based designs without GPU acceleration or high-bandwidth DRAM. | Select only for i.MX 8M Nano platforms - not pin-compatible or functionally interchangeable with PCA9450AAHNY. |
| PCA9450CHN | Supports i.MX 8M Plus; BUCK1/BUCK3 configured as 6 A dual-phase regulator; R_SNSP3_CFG tied to GND. | Required for i.MX 8M Plus with higher-core-count SoC and dual-display support - demands different power sequencing and layout. | Valid only for i.MX 8M Plus designs; incompatible with i.MX 8M Mini due to differing BUCK topology and MTP configuration. |
Compared with PCA9450BHN and PCA9450CHN, the PCA9450AAHNY uniquely delivers three independent 3 A DVS buck regulators optimized for i.MX 8M Mini's specific core, GPU, and DRAM power domains - making it non-substitutable in Mini-based designs requiring full feature set and validated sequencing.
Availability
PCA9450AAHNY is available at Aetrix Electronics and suitable for industrial IoT gateways, ePOS terminals, and i.MX 8M Mini–based tablets requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for PCA9450AAHNY 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 application processors and power management.
The PCA9450 product line was engineered specifically to deliver complete, validated power subsystems for NXP's i.MX 8M family - minimizing design risk, reducing time-to-market, and ensuring robust operation across portable and industrial use cases.
FAQ
What is the primary application processor supported by the PCA9450AAHNY?
The PCA9450AAHNY is specifically designed for the i.MX 8M Mini application processor. It provides fully validated power rails - including BUCK1 for VDD_SOC, BUCK2 for VDD_ARM, and BUCK3 for GPU/VPU/DRAM - along with matching sequencing, DVS control, and SNVS-domain support required by the i.MX 8M Mini reference design. It is not compatible with i.MX 8M Nano or Plus variants.
Does the PCA9450AAHNY support dynamic voltage scaling (DVS)?
Yes, the PCA9450AAHNY supports DVS on BUCK1, BUCK2, and BUCK3 - each capable of programmable output voltage adjustment (0.6 V to 2.1875 V in 12.5 mV steps) and configurable ramp-up/ramp-down timing. This enables real-time power optimization for CPU, ARM, and GPU/DRAM domains under varying computational loads in the i.MX 8M Mini platform.
How does the PCA9450AAHNY handle secure boot and RTC functionality during low-power states?
The PCA9450AAHNY maintains LDO1 (1.8 V, 10 mA) and LDO2 (0.85 V, 10 mA) in always-on operation during SNVS mode, ensuring continuous power to the i.MX 8M Mini's Secure Non-Volatile Storage and RTC circuitry. Its integrated 32.768 kHz crystal oscillator driver feeds CLK_32K_OUT directly from LDO1, preserving timekeeping and secure boot integrity even when main rails are off.
What is the role of the dual-channel level translator in the PCA9450AAHNY?
The PCA9450AAHNY integrates a 2-bit, auto-direction-sensing logic translator (SDAL/SCLL ↔ SDAH/SCLH) that enables bidirectional 1.8 V ↔ 3.3 V level shifting between the i.MX 8M Mini's internal I²C controller (VINT domain) and external peripherals (SWIN domain). This eliminates discrete level shifters and simplifies SDIO and I²C peripheral interfacing in compact designs.
Is the PCA9450AAHNY pin-compatible with other PCA9450 variants like PCA9450BHN or PCA9450CHN?
No, the PCA9450AAHNY is not pin-compatible with PCA9450BHN or PCA9450CHN. While all share the same HVQFN56 package footprint, their internal BUCK configurations differ fundamentally: PCA9450AAHNY uses BUCK3 as an independent 3 A GPU/DRAM rail, whereas PCA9450BHN disables BUCK3 and PCA9450CHN configures BUCK1/BUCK3 as a 6 A dual-phase regulator - requiring distinct PCB layout and firmware initialization.
PCA9450AAHNY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 56-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- i.MX Processors
- Current - Supply:
- 23µA
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-HVQFN (7x7)
PCA9450AAHNY FAQ
1.How can I place an order for PCA9450AAHNY through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9450AAHNY 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 PCA9450AAHNY reliable?
The price and inventory of PCA9450AAHNY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9450AAHNY is usually 5 days.
3.What payment methods are accepted for PCA9450AAHNY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9450AAHNY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9450AAHNY?
PCA9450AAHNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9450AAHNY 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 PCA9450AAHNY?
For technical support, including PCA9450AAHNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9450AAHNY requirements.
6.How does Aetrix verify that PCA9450AAHNY is sourced from the original manufacturer or authorized distributors?
All PCA9450AAHNY 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 PCA9450AAHNY meets industry standards.
7.What is the process for return or replacement of PCA9450AAHNY?
All PCA9450AAHNY units undergo pre-shipment inspection (PSI). If there is an issue with PCA9450AAHNY, 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 PCA9450AAHNY part is unused and in its original packaging.
Return procedure for PCA9450AAHNY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9450AAHNY Tags
-
TPS2511DGNR
Texas Instruments
-
UTC2000/MG
Microchip Technology
-
TUSB320HAIRWBR
Texas Instruments
-
TPS61252DSGR
Texas Instruments
-
PI5USB30216CXUAEX
Diodes Incorporated
-
SN6501DBVR
Texas Instruments
-
CYPD3177-24LQXQT
Infineon Technologies
-
SN6501QDBVRQ1
Texas Instruments
-
STUSB1600AQTR
STMicroelectronics
-
SN6505BDBVR
Texas Instruments
-
SN6501DBVT
Texas Instruments
-
TPS65150PWPR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
