PCA9452AHNMP - PMIC for i.MX 93, 6 Buck + 5 LDO | NXP
料号： PCA9452AHNMP ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.85 | $6.85 |
| 10 | $6.2 | $62.00 |
| 100 | $5.42 | $542.00 |
| 500 | $4.95 | $2,475.00 |
| 1,000 | $4.5 | $4,500.00 |
PCA9452AHNMP 概述
A power management IC (PMIC) is a highly integrated power subsystem that combines multiple DC-DC converters and linear regulators on one die, replacing a dozen discrete regulator ICs. In the power-management hierarchy, the PMIC sits above individual voltage regulators and below the system controller, offering sequenced power-up, I2C-bus programmability, and protection functions tailored to a specific processor family such as the NXP i.MX application processors.
Key differentiating features include three buck converters that support dynamic voltage scaling (DVS) for the i.MX 93 core rails, allowing the software to trade processor frequency against power consumption; a 400 mA integrated load switch for peripheral power domains; and interrupt-driven supervision via the IRQ_B pin, which asserts LOW on any unmasked interrupt status change and releases HIGH after the application processor reads the INT1 register.
The PCA9452 communicates over an I2C-bus interface supporting Standard-mode (100 kbit/s), Fast-mode (400 kbit/s), and Fast-mode plus (1 Mbit/s) transfers. The I2C address at Power-On Reset is defined in Table 17 of the manufacturer datasheet, enabling multi-PMIC systems without address conflicts. The oscillator driver section supports an external 32.768 kHz crystal for the processor's real-time clock domain, and the 2-channel level translator bridges rail domains of different voltages in the i.MX 93 power tree.
Typical applications include automotive infotainment and cluster displays based on the i.MX 93, extended-industrial HMI panels, edge-AI gateways, and battery-backed telematics units, all of which need precisely sequenced, low-quiescent-power rails. The single-chip approach reduces board area, BOM count, and total power-tree design risk compared with discrete regulator stacks.
A key design consideration is buck inductor selection and layout: the DVS-capable bucks change their target output voltage under software control, so compensation and output capacitance must be chosen per the manufacturer datasheet reference design to keep transient response within processor specification during frequency transitions.
This page synthesizes distributor availability from DigiKey, Mouser, Newark and Octopart, lifecycle status, alternatives guidance, and practical design notes not consolidated in the manufacturer datasheet.
直接替换替代料： PCA9452AHNMP ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
PCA9452AHNM
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PCA9452AHNMP 最大额定值与电气特性
| Product Type | Power Management IC (PMIC) for i.MX 93x processors |
| Buck Regulators | 6 high-efficiency step-down converters |
| LDO Regulators | 5 (11 regulated outputs total) |
| Load Switch | 1 channel, 400 mA |
| Level Translator | 2 channels |
| Crystal Oscillator Driver | 32.768 kHz |
| Dynamic Voltage Scaling | Supported on 3 buck regulators |
| Control Interface | I2C-bus, 2-wire |
| I2C Data Rates | Standard-mode 100 kbit/s, Fast-mode 400 kbit/s, Fast-mode plus 1 Mbit/s |
| Interrupt Output | IRQ_B open-drain, INT1 register driven |
| Qualification | AEC-Q100 Grade 2 |
| Target Markets | Automotive and extended industrial |
| Target Processor | NXP i.MX 93x family |
| 封装 | HVQFN (HN suffix) |
| 安装类型 | Surface Mount |
PCA9452AHNMP hvqfn (hn suffix) 引脚配置指南
PCA9452AHNMP（hvqfn (hn suffix) 封装）的引脚配置。 该功率器件具有栅极、漏极和源极端子。对于无极性封装，请参阅制造商数据手册以了解确切的引脚 1 方向和封装尺寸细节。常见应用包括电源设计、电机驱动和负载开关。
暂无详细引脚数据： PCA9452AHNMP.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PCA9452AHNMP 适用于 6 应用s: Automotive Infotainment and Cluster Displays, Extended Industrial HMI and Edge-AI Gateways, Battery-Powered Telematics and Trackers, Automotive ADAS Domain Accessories and Cameras, Medical-adjacent Industrial Monitoring Terminals, Smart Home and Building Control Panels.
Automotive Infotainment and Cluster Displays
The PCA9452AHNMP fits automotive infotainment and cluster head units because it is AEC-Q100 Grade 2 qualified and its rail presets, sequencing, and three DVS-capable bucks are co-designed with the i.MX 93x processor family used in next-generation displays. In a cluster design the bucks power the SoC core, DDR, and I/O rails with dynamic voltage scaling under software control, while the five LDOs supply analog, PHY, and always-on domains such as the 32.768 kHz RTC clock. The 400 mA load switch gates peripheral power for standby current reduction, and the IRQ_B pin gives the SoC interrupt-driven visibility of fault events via the INT1 register. Using I2C Fast-mode plus at 1 Mbit/s, the SoC can re-program rail targets quickly during boot and mode transitions.
推荐
Extended Industrial HMI and Edge-AI Gateways
Industrial human-machine interfaces and edge-AI gateways built on the i.MX 93 benefit from the PCA9452's extended-industrial qualification and highly integrated rail set. The six high-efficiency bucks convert a 5 V intermediate rail into the processor core, memory, and I/O supplies with minimal external component count, while the five LDOs serve low-noise analog loads such as Ethernet PHYs and touch controllers. The 2-channel level translator cleanly bridges signal domains running at different voltages, and the integrated 32.768 kHz crystal oscillator driver keeps the RTC domain alive during standby. The 400 mA load switch allows firmware to cut power to radios or sensors in low-power states, and I2C control at 400 kbit/s enables runtime supervision of all eleven regulated outputs from the application processor.
推荐
Battery-Powered Telematics and Trackers
Telematics units and asset trackers based on the i.MX 93 require low standby current, wide temperature tolerance, and disciplined power sequencing, all of which the PCA9452AHNMP provides in one AEC-Q100 Grade 2 chip. The 400 mA load switch isolates GNSS, cellular modem, or sensor clusters so they draw zero current between position fixes, while the processor sleeps on the always-on LDO domain clocked by the integrated 32.768 kHz oscillator driver. Dynamic voltage scaling on three bucks lets software drop core voltage during idle periods, extending battery runtime in vehicles parked for days. The IRQ_B interrupt output, driven from the INT1 register, reports undervoltage or fault events to the host so the firmware can shut down gracefully before the supply collapses.
推荐
Automotive ADAS Domain Accessories and Cameras
Surround-view camera modules and ADAS accessories built around i.MX 93-class processors use the PCA9452AHNMP to consolidate the power tree in a space-constrained housing. The six bucks deliver high-efficiency conversion for the image processor and memory, and the low-noise LDOs power image sensor analog rails where ripple directly affects picture quality. The 2-channel level translator interfaces the camera's low-voltage logic with vehicle-side signaling, and the I2C bus, running Standard-mode at 100 kbit/s up to Fast-mode plus at 1 Mbit/s, carries rail-status polling. Being automotive-qualified, the PMIC survives under-hood-adjacent temperature profiles, and the interrupt architecture gives the vision stack immediate notice of any unmasked INT1 register status change.
推荐
Medical-adjacent Industrial Monitoring Terminals
Diagnostic and monitoring terminals that use the industrial-grade variant of the i.MX 93 platform can adopt the PCA9452 where extended-industrial qualification is acceptable. The eleven regulated outputs map directly onto the processor, DDR, security, RF, and analog needs of a connected terminal, reducing BOM count relative to a discrete regulator solution. The 400 mA load switch powers peripherals such as barcode engines or wireless modules only during scan/transmit windows, and the 32.768 kHz crystal driver maintains timestamps for logged events. Software sequencing via I2C at 400 kbit/s guarantees rails appear in the order the processor boot ROM requires, and the IRQ_B pin surfaces any regulator fault so the application can log a service event before data loss.
推荐
Smart Home and Building Control Panels
Premium smart-home control panels and building automation head units built on the i.MX 93 use the PCA9452AHNMP to power the processor, display, touch, and radio subsystems from a single 5 V input. The three DVS-capable bucks balance display rendering performance against wall-power or PoE energy budgets, the LDOs supply the display timing controller and audio codec with low ripple, and the load switch isolates always-listening voice electronics during deep sleep. The 32.768 kHz oscillator driver keeps wall-clock time through power interruptions, and the 2-channel level translator safely interfaces legacy 3.3 V and 1.8 V peripherals. I2C register-based control lets the panel firmware sequence and supervise all rails without external supervisor ICs, shrinking the board area of wall-mounted products.
推荐
推荐产品汇总
工程参考数据： PCA9452AHNMP ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PCA9452AHNM |
|---|---|---|
| Package | HVQFN (HN suffix) | HVQFN (HN suffix) - same |
| Brand | NXP Semiconductors | NXP Semiconductors |
| Buck Regulators | 6 | 6 |
| LDO Regulators | 5 | 5 |
| Regulated Outputs | 11 | 11 |
| Load Switch | 1 x 400 mA | 1 x 400 mA |
| DVS-capable Bucks | 3 | 3 |
| Qualification | AEC-Q100 Grade 2 | AEC-Q100 Grade 2 |
| Target Processor | i.MX 93x family | i.MX 93x family |
关键差异点
- i.MX 93-specific rail presets and sequencing （对比 Generic programmable PMICs)
- High integration in one AEC-Q100 Grade 2 package （对比 Discrete buck + LDO stack)
- Full I2C supervision with interrupt output （对比 Fixed-function regulator solutions)
设计说明
Follow the NXP PCA9452 datasheet reference layout for the HVQFN (HN) package: place the buck converter input capacitors and inductors as close to the respective pins as possible, use short, wide return paths to the exposed thermal pad for power ground, and mount the exposed pad to a grounded copper pour with an adequate via array for heat dissipation. Keep the I2C and IRQ_B traces away from the high-di/dt buck switch nodes to prevent bus glitches; 1 Mbit/s Fast-mode plus timing leaves little noise margin.
The three DVS-capable bucks change output voltage targets under software control during i.MX 93 frequency transitions. Size output capacitance per the datasheet reference design so transient droop during a DVS step stays within processor limits, and ensure inductor saturation current exceeds the peak rail current including derating. Verify that the power-on-reset I2C address (datasheet Table 17) does not conflict with other bus devices in your system.
Do not leave unmasked INT1 register interrupt bits enabled at boot, or IRQ_B will assert LOW immediately and can stall firmware that polls the interrupt line. Initialize the register map over I2C early in boot, mask unused sources, and service INT1 reads to release IRQ_B. Also confirm that the LDO and load-switch loading does not exceed thermal limits at maximum ambient temperature - verify dissipation with the datasheet thermal data before finalizing the design.
合规信息
AEC-Q100 Grade 2 automotive qualification confirmed per NXP product information. RoHS/REACH/lead-free status not stated in the provided data - verify on the NXP product page for PCA9452AHN.
