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NXP Semiconductors PCA9460BUKZ
- Part No.:
- PCA9460BUKZ
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 42-UFBGA, WLCSP
- Datasheet:
-
PCA9460BUKZ.pdf
- Description:
- POWER MANAGE IC (PMIC) FOR I.MX
- Quantity:
- Payment:
- Shipping:
Inventory:5,850
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Product details
Overview
PCA9460BUKZ from NXP Semiconductors is a 13-channel PMIC optimized for ultra-low-power i.MX 8ULP systems with LPDDR4X memory. It integrates four 1 A buck regulators (two with DVS), five LDOs (including 10 mA SNVS core LDO), and four 150 mΩ load switches configurable as LED drivers - delivering <1.5 μA quiescent current in low-power mode for extended battery life in wearables.
For engineers reviewing the PCA9460BUKZ datasheet, PCA9460BUKZ pinout, PCA9460BUKZ application, or PCA9460BUKZ equivalent, key selection criteria include its i.MX 8ULP–specific OTP configuration (1.1 V BUCK4, 0.6 V LDO1), WL-CSP42 package (2.86 mm × 2.46 mm), Fm+ I²C interface, and thermal/fault shutdown behavior per Rev. 3.6 datasheet.
Technical Context
The PCA9460BUKZ implements a flexible OTP-programmable power sequencer supporting six states (OFF, SNVS, RUN, PWRDN, PWRUP, FAULT_SD) with tON_STEP/tOFF_STEP timing control and POR_B release synchronization. Its RUN-state ACTIVE/STANDBY/DPSTANDBY modes are governed by PMIC_STBY_REQ and STANDBY_CFG register bits.
Each buck regulator features programmable output (e.g., BUCK2/BUCK3: 0.6–2.1875 V in 12.5 mV steps; BUCK1: 0.6–3.4 V in 25 mV steps), active discharge resistors, and DVS capability on two channels. The five LDOs include one NMOS (LDO1) and three PMOS (LDO2–LDO4) types, all with 300 nA quiescent current and built-in active discharge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Buck Regulators | Four 1 A synchronous buck converters: BUCK1 (1.8 V), BUCK2 & BUCK3 (1.0 V DVS), BUCK4 (1.1 V for PCA9460B variant) |
| LDOs | Five total: LDO_SNVS (3.0 V, 10 mA), LDO1 (0.6 V, 250 mA NMOS), LDO2/LDO3/LDO4 (3.3 V/1.8 V, 250 mA PMOS each) |
| Quiescent Current | 1.5 μA in low-power mode; enables multi-week standby in battery-powered wearables without compromising wake-up latency |
| Load Switches | Four 150 mΩ Rdson switches with configurable LED driver mode (two blink patterns) and active discharge for rail isolation |
| I²C Interface | Fm+ (Fast-mode Plus) up to 1 MHz; supports real-time voltage scaling, fault reporting, and sequencing control via 0x08–0x09 registers |
| Package | WLCSP42 (SOT1459-7): 2.86 mm × 2.46 mm, 0.4 mm pitch, 0.525 mm height - suitable for space-constrained wearable PCBs |
| ESD Protection | HBM ±2000 V, CDM ±500 V - meets industrial reliability requirements for handheld consumer devices |
Pinout & Package
PCA9460BUKZ uses a 42-bump wafer-level chip-scale package (WLCSP42, SOT1459-7) with 0.4 mm pitch, 2.86 mm × 2.46 mm footprint, and backside coating. Pin functions are validated per NXP datasheet Rev. 3.6 (pages 4–5).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MODE0–MODE2 | Digital input | Selects power state transition behavior (ACTIVE/STANDBY/DPSTANDBY) and enables OTP-configurable sequencing |
| PMIC_STBY_REQ | Digital input | Direct hardware control of standby entry/exit; asserts PMIC_STBY signal when STANDBY_CFG = 0b |
| BUCK1FB–BUCK4FB | Analog input | Feedback nodes for closed-loop regulation; support external resistor dividers to set precise output voltages |
| LX1–LX4 | Switching node | High-frequency switching outputs connected to external inductors (0.47 µH) and bulk capacitors (10–22 µF) |
| LSW1IN–LSW4IN / LSW1OUT–LSW4OUT | Power terminals | Input/output pairs for 150 mΩ load switches; OUT pins serve as current sources when configured as LED drivers |
| SCL / SDA | I²C interface | Fm+ 1 MHz bidirectional bus for dynamic DVS control, fault monitoring, and register configuration |
| POR_B | Open-drain output | Power-on reset signal released after full power-up sequence completes; requires external pull-up resistor |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 1.5 μA in low-power mode reduces system standby consumption - critical for eReaders and smartwatches |
| DVS-enabled bucks | Two 1 A buck regulators support 25 mV/2 µs dynamic voltage scaling to match i.MX 8ULP core voltage demands |
| OTP-configured sequencing | Pre-programmed power-up order (e.g., BUCK1 → BUCK2 → LDO2 → LDO3) eliminates external sequencing ICs |
| SNVS LDO | Always-on 3.0 V, 10 mA LDO powers secure non-volatile storage circuitry during deep sleep - maintains data integrity |
| LED driver capability | Four load switches configurable as constant-current LED drivers with two independent blink patterns - saves GPIO resources |
Applications
| eReader Power Management | Smartwatch System Power |
|---|---|
Use Scenario: Monochrome E Ink display with i.MX 8ULP SoC operating in intermittent read mode with multi-day battery life. IC Role / Device Role / Timing Role: PCA9460BUKZ supplies regulated rails (1.8 V for display interface, 0.6 V for CPU core, 3.3 V for sensors) and manages deep-sleep transitions via PMIC_STBY_REQ. Use Value: 1.5 μA quiescent current extends standby time beyond 30 days; OTP sequencing ensures reliable cold boot from SNVS state. |
Use Scenario: Compact wrist-worn device with always-on sensor hub, Bluetooth LE radio, and OLED display requiring tight thermal envelope. IC Role / Device Role / Timing Role: PCA9460BUKZ delivers 1.1 V to LPDDR4X memory, powers SNVS domain for RTC backup, and drives status LEDs via LSW1–LSW4. Use Value: WL-CSP42 package fits sub-20 mm² PCB area; thermal shutdown (TJSHDN) prevents overheating during GPS+BLE concurrent operation. |
| Portable Headset Audio | Handheld Scanner |
Use Scenario: Battery-powered Bluetooth headset with ANC processing, voice assistant, and touch controls. IC Role / Device Role / Timing Role: PCA9460BUKZ provides 1.0 V DVS rails to i.MX 8ULP audio subsystem, powers codec LDOs (3.3 V), and enables fast wake-from-standby via MODE[2:0]. Use Value: 100 ms VR fault response (tFLT_SD_WAIT) prevents audio dropouts during transient supply disturbances. |
Use Scenario: Industrial barcode scanner with laser diode, imager, and Wi-Fi module operating on single-cell Li-ion. IC Role / Device Role / Timing Role: PCA9460BUKZ regulates 1.8 V for imager, 3.3 V for Wi-Fi SoC, and uses LSW3/LSW4 to enable/disable laser driver independently. Use Value: Four independent load switches allow granular power gating - reducing active current by >40% versus fixed-rail designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9460AUKZ | BUCK4 = 1.1 V, LDO1 = 1.1 V; OTP configured for i.MX 8ULP + LPDDR4 (not LPDDR4X) | Requires LPDDR4 memory interface; incompatible with LPDDR4X timing and voltage margins | Select PCA9460AUKZ only when targeting LPDDR4-based i.MX 8ULP designs - not interchangeable with PCA9460BUKZ |
| PCA9460CUKZ | BUCK4 = 1.2 V, LDO1 = 1.2 V; OTP tuned for i.MX 8ULP + LPDDR3 platform | Supports legacy LPDDR3 memory; lacks LPDDR4X-specific startup timing and voltage calibration | Use PCA9460CUKZ for cost-sensitive LPDDR3 designs; PCA9460BUKZ is mandatory for LPDDR4X compliance |
Compared with PCA9460AUKZ and PCA9460CUKZ, PCA9460BUKZ uniquely supports LPDDR4X memory interfaces through factory-programmed BUCK4 (1.1 V) and LDO1 (0.6 V) defaults, enabling lower core voltage operation and tighter timing margins required by high-speed mobile DRAM.
Availability
PCA9460BUKZ is available at Aetrix Electronics and suitable for ultra-low-power portable devices, wearable electronics, and i.MX 8ULP–based embedded systems requiring stable component supply across long production lifecycles.
Supply support for PCA9460BUKZ 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 PCA9460BUKZ belongs to NXP's i.MX 8ULP–optimized PMIC family, designed specifically to minimize system-level power consumption while ensuring robust power sequencing, thermal safety, and memory interface compatibility for next-generation wearables.
FAQ
What is the default BUCK4 output voltage for PCA9460BUKZ?
The PCA9460BUKZ has BUCK4 factory-programmed to 1.1 V (OTP register 0x2F = 0x14), matching the LPDDR4X VDDQ specification. This differs from PCA9460AUKZ (1.1 V) and PCA9460CUKZ (1.2 V), making PCA9460BUKZ the only variant qualified for i.MX 8ULP + LPDDR4X platforms per datasheet Table 3.
How does PCA9460BUKZ manage ultra-low quiescent current in standby mode?
PCA9460BUKZ achieves 1.5 μA quiescent current in low-power mode by disabling non-essential regulators, entering SNVS state with only LDO_SNVS active, and minimizing bias currents in internal reference and control circuits - verified in Rev. 3.6 datasheet Section 2.
Can PCA9460BUKZ be used with LPDDR4 memory instead of LPDDR4X?
No - PCA9460BUKZ is OTP-configured for LPDDR4X timing and voltage requirements (e.g., 1.1 V BUCK4, 0.6 V LDO1). For LPDDR4, use PCA9460AUKZ; substituting PCA9460BUKZ risks memory initialization failure due to incorrect voltage calibration and sequencing.
What is the function of the MODE[2:0] pins on PCA9460BUKZ?
MODE0–MODE2 pins on PCA9460BUKZ configure power state transitions and sequencing behavior. When STANDBY_CFG = 0b, they determine ACTIVE/STANDBY mode entry; when STANDBY_CFG = 1b, they enable DPSTANDBY mode - all per datasheet Section 7.4.5.
Does PCA9460BUKZ support thermal shutdown protection?
Yes - PCA9460BUKZ enters FAULT_SD state when junction temperature reaches TJSHDN, immediately pulling POR_B low and turning off all regulators. It remains in FAULT_SD until temperature falls below TJSHDN, then transitions to SNVS state - detailed in Section 7.4.6 and Figure 10.
PCA9460BUKZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 42-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Microcontroller, MCU
- Current - Supply:
- -
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 42-WLCSP (2.86x2.46)
PCA9460BUKZ FAQ
1.How can I place an order for PCA9460BUKZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9460BUKZ 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 PCA9460BUKZ reliable?
The price and inventory of PCA9460BUKZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9460BUKZ is usually 5 days.
3.What payment methods are accepted for PCA9460BUKZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9460BUKZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9460BUKZ?
PCA9460BUKZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9460BUKZ 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 PCA9460BUKZ?
For technical support, including PCA9460BUKZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9460BUKZ requirements.
6.How does Aetrix verify that PCA9460BUKZ is sourced from the original manufacturer or authorized distributors?
All PCA9460BUKZ 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 PCA9460BUKZ meets industry standards.
7.What is the process for return or replacement of PCA9460BUKZ?
All PCA9460BUKZ units undergo pre-shipment inspection (PSI). If there is an issue with PCA9460BUKZ, 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 PCA9460BUKZ part is unused and in its original packaging.
Return procedure for PCA9460BUKZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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