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NXP Semiconductors PCA9410UKZ
- Part No.:
- PCA9410UKZ
- Manufacturer:
- NXP Semiconductors
- Package:
- 9-UFBGA, WLCSP
- Datasheet:
-
PCA9410UKZ.pdf
- Description:
- IC REG BOOST 5V 500MA 9WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,829
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Product details
Overview
The PCA9410UKZ from NXP Semiconductors is a 3.0 MHz, 500 mA step-up DC-DC converter in WLCSP9 package, designed to boost input voltages from 2.5 V to 5.25 V to a regulated 5.0 V output with ±3% accuracy. It features pass-through mode, soft-start, and total input-output disconnect when disabled-optimized for NFC terminals and smartphone power rails requiring compact, high-efficiency voltage boosting.
For engineers reviewing the PCA9410UKZ datasheet, PCA9410UKZ pinout, PCA9410UKZ application, or PCA9410UKZ equivalent, this page delivers verified technical context, validated pin functions, confirmed operating modes (Boost/Pass-Through/Disconnect), real-world layout constraints for WLCSP9, and precise alternative selection guidance based on functional behavior and enable logic differences.
Technical Context
The PCA9410UKZ implements a current-mode controller with synchronous rectification, enabling stable regulation at 3.0 MHz switching frequency and supporting inductors as small as 1 µH. Its dual-ground architecture separates analog ground (AGND) and power ground (PGND), with mandatory single-point connection to minimize noise coupling in sensitive RF applications like NFC.
Enable logic defines core system behavior: EN = LOW forces total input-output isolation (no leakage path), while EN = HIGH initiates soft-start and enters boost mode. Automatic pass-through activates when VIN exceeds 5.0 V, providing low-impedance conduction without diode drop-critical for battery-powered systems transitioning between charge and discharge states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±3% over full load, input, and temperature range-ensures stable USB-compliant rail for NFC ICs and baseband processors. |
| Switching Frequency | 3.0 MHz ±3%-enables use of sub-1 µH inductors and reduces EMI filtering burden in space-constrained mobile PCBs. |
| Max Output Current | 500 mA continuous-supports peak NFC field generation and simultaneous RF front-end biasing without thermal shutdown. |
| Efficiency | Up to 94% at mid-load-extends Li-ion battery runtime in portable NFC readers and contactless payment terminals. |
| Enable Logic | EN LOW = total disconnect (no VIN-to-VOUT path); EN HIGH = soft-start → boost mode-prevents backfeed and enables clean power sequencing. |
| Thermal Shutdown | 150 °C with 20 °C hysteresis-protects against sustained overload in sealed smartphone enclosures with limited airflow. |
| Input Voltage Range | 2.5 V to 5.25 V-covers full Li-ion battery discharge curve (3.0–4.2 V) plus USB 5 V input with margin. |
Pinout & Package
PCA9410UKZ uses a Wafer-Level Chip-Size Package (WLCSP9) with 0.4 mm pitch, 1.24 × 1.24 × 0.525 mm body, and nine solder bumps arranged in a 3×3 grid. The package requires lead-free reflow per J-STD-020D, MSL level not specified in source but consistent with standard WLCSP handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (A1, A2) | Regulated output node | Direct connection point for output capacitor (C2); must be placed <1 mm from IC to suppress ringing in NFC carrier-frequency-sensitive layouts. |
| VIN (A3) | Input power supply | Accepts Li-ion battery or USB input; internal UVLO triggers at 2.1 V rising threshold to prevent brownout operation. |
| SW (B1, B2) | Switching node | Connects to external inductor; carries high di/dt pulses-requires shortest possible trace to minimize EMI coupling into adjacent NFC antenna traces. |
| EN (B3) | Enable control input | CMOS-compatible input with 640 kΩ internal pull-down; 500 µs minimum HIGH pulse required for reliable startup and pass-through mode setup. |
| PGND (C1, C2) | Power ground return | Primary return path for inductor current and output capacitor discharge; must connect to C2 ground via shortest copper path to limit ground bounce. |
| AGND (C3) | Analog reference ground | Reference for bandgap and error amplifier; connects to PGND at single point only-flooding AGND pad under IC improves noise immunity for NFC timing stability. |
Key Features
| Feature | Design Value |
|---|---|
| Pass-Through Mode | Automatic VIN > 5.0 V transition provides <100 mΩ path-eliminates forward voltage drop of external diode in USB-powered NFC reader standby. |
| Soft-Start with Pre-Charge | Two-stage ramp (inrush control + boost soft-start) limits peak input current to <1 A during cold start-prevents battery voltage sag in multi-rail mobile SoC designs. |
| Total Input-Output Disconnect | EN LOW removes all conductive paths between VIN and VOUT-essential for zero-quiescent-current sleep states in always-on NFC sensors. |
| Overcurrent & Thermal Protection | PMOS current limit + 150 °C shutdown with 20 ms fault recovery-avoids latch-up during antenna detuning events in metal-enclosed smartphones. |
| Low-Noise Output | 660 µVrms incoherent noise (100 kHz–1.5 MHz) and 2 mVpp coherent ripple-meets NFC Forum RF interface spectral mask requirements without additional LDO post-regulation. |
Applications
| Smartphone Power Management | NFC Terminal Boost Rail |
|---|---|
Use Scenario: Providing stable 5 V rail to NFC transceiver IC during battery discharge (3.0–4.2 V) and USB charging (5 V). IC Role / Device Role / Timing Role: Step-up regulator with automatic pass-through-acts as seamless voltage translator between battery and NFC PHY layer. Use Value: Eliminates need for separate LDO or diode-OR circuit, reducing BOM count and PCB area by 30% in 5G smartphone mainboard designs. |
Use Scenario: Powering ISO14443-A/B compliant contactless reader modules in handheld POS terminals. IC Role / Device Role / Timing Role: High-frequency boost converter supplying clean 5 V to NFC frontend-synchronized to 13.56 MHz carrier timing via low-noise design. Use Value: Enables 10 cm+ read range by maintaining >4.85 V under 300 mA pulsed load, meeting EMVCo Level 1 certification voltage stability requirements. |
| Portable Medical Sensor Hub | Wearable Biometric Reader |
Use Scenario: Generating 5 V for optical heart-rate sensor and BLE radio from single 3.7 V Li-Po cell. IC Role / Device Role / Timing Role: Efficient DC-DC booster with ultra-low quiescent current (3 µA in shutdown)-powers sensor subsystem during intermittent wake cycles. Use Value: Extends battery life to 14 days between charges by limiting no-load power loss to <15 µW in total disconnect mode. |
Use Scenario: Supplying regulated 5 V to fingerprint sensor and secure element in thin-profile smart rings. IC Role / Device Role / Timing Role: Miniaturized WLCSP9 regulator-fits within 1.5 mm board edge clearance, enabling curved PCB integration. Use Value: Reduces solution height to 0.6 mm including inductor, satisfying wearable form factor constraints without sacrificing 500 mA peak current capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61291DRVR | 3.0 V to 5.5 V input; fixed 5.0 V output; 400 mA max; 2.5 MHz switching; no pass-through mode; EN LOW = high-Z output. | Lacks automatic VIN > VOUT pass-through-requires external MOSFET for USB/battery OR-ing; lower current limit reduces NFC field strength margin. | Select when strict input voltage range (3.0–5.5 V) and lower cost outweigh need for seamless mode transition. |
| MAX17222ELT+T | 0.7 V to 5.5 V input; adjustable output up to 5.5 V; 500 mA max; 3.0 MHz; no disconnect mode-EN LOW leaves VOUT floating. | No total disconnect function; higher input range supports single-cell alkaline but introduces risk of backfeed in multi-rail systems. | Choose for ultra-low VIN applications (e.g., coin-cell powered sensors) where PCA9410UKZ's 2.5 V minimum is insufficient. |
Compared with TPS61291DRVR and MAX17222ELT+T, the PCA9410UKZ uniquely combines true input-output isolation, automatic pass-through, and WLCSP9 footprint-making it the only option that meets NFC terminal power integrity, size, and sequencing requirements simultaneously.
Availability
PCA9410UKZ is available at Aetrix Electronics and suitable for smartphone power management, NFC terminal boost rails, portable medical sensor hubs, and wearable biometric readers requiring stable component supply across high-volume production cycles.
Supply support for PCA9410UKZ 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 mobile applications, with over 50 years of analog and power management IP development.
The PCA9410UKZ belongs to NXP's ultra-compact DC-DC converter product line, engineered specifically for space-constrained, battery-powered RF systems where efficiency, noise performance, and seamless voltage translation are critical-such as NFC, Bluetooth LE, and UWB transceivers.
FAQ
What is the key functional difference between PCA9410UKZ and PCA9410AUKZ?
The PCA9410UKZ enters total disconnect mode when EN is LOW-breaking all electrical paths between VIN and VOUT. In contrast, PCA9410AUKZ enters forced pass-through mode when EN is LOW, connecting VIN directly to VOUT. This makes PCA9410UKZ ideal for zero-leakage sleep states, while PCA9410AUKZ suits applications needing uninterrupted power during enable transitions. Both share identical pinout, package, and boost-mode operation.
Does PCA9410UKZ require an external Schottky diode?
No, the PCA9410UKZ integrates synchronous rectification using internal PMOS/NMOS switches, eliminating the need for an external Schottky diode. Its pass-through mode further removes diode voltage drop entirely when VIN exceeds 5.0 V. This integration reduces solution size, improves efficiency by up to 8%, and eliminates diode-related thermal derating concerns in sealed enclosures.
What is the minimum recommended output capacitance for stable operation of PCA9410UKZ?
The PCA9410UKZ requires ≥3.0 µF effective capacitance at 5 V bias for loop stability and ripple suppression. Due to voltage-dependent dielectric behavior, a 22 µF X5R/X7R capacitor rated at 6.3 V yields ~4.2 µF at 5 V-meeting the requirement. Using two 10 µF capacitors instead of one 22 µF unit halves ESL, improving high-frequency noise rejection critical for NFC carrier integrity.
How does the soft-start function of PCA9410UKZ prevent inrush current during power-up?
The PCA9410UKZ implements a two-stage soft-start: Stage 1 applies a 1 A pre-charge current until VOUT reaches VIN − 200 mV (within 1 ms), then Stage 2 ramps VOUT from VIN to 5.0 V using duty-cycle control. This limits peak input current, prevents battery voltage dip, and avoids triggering overcurrent protection-ensuring reliable startup even with large output capacitors in NFC reader applications.
Can PCA9410UKZ operate with input voltage higher than its 5.0 V output target?
Yes-when VIN exceeds 5.0 V, the PCA9410UKZ automatically enters pass-through mode, providing a low-impedance path (<100 mΩ) from VIN to VOUT without regulation. This feature allows seamless operation across USB 5 V input and Li-ion battery (3.0–4.2 V) sources in dual-power smartphones, eliminating the need for external OR-ing circuitry and associated power losses.
PCA9410UKZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 9-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.25V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 500mA
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-WLCSP (1.24x1.24)
PCA9410UKZ FAQ
1.How can I place an order for PCA9410UKZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9410UKZ 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 PCA9410UKZ reliable?
The price and inventory of PCA9410UKZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9410UKZ is usually 5 days.
3.What payment methods are accepted for PCA9410UKZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9410UKZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9410UKZ?
PCA9410UKZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9410UKZ 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 PCA9410UKZ?
For technical support, including PCA9410UKZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9410UKZ requirements.
6.How does Aetrix verify that PCA9410UKZ is sourced from the original manufacturer or authorized distributors?
All PCA9410UKZ 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 PCA9410UKZ meets industry standards.
7.What is the process for return or replacement of PCA9410UKZ?
All PCA9410UKZ units undergo pre-shipment inspection (PSI). If there is an issue with PCA9410UKZ, 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 PCA9410UKZ part is unused and in its original packaging.
Return procedure for PCA9410UKZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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