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NXP Semiconductors NX30P0121UKZ
- Part No.:
- NX30P0121UKZ
- Manufacturer:
- NXP Semiconductors
- Package:
- 12-UFBGA, WLCSP
- Datasheet:
-
NX30P0121UKZ.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 12WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:24,819
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Product details
Overview
NX30P0121UK from NXP Semiconductors is a high-voltage, unidirectional 3A overvoltage protection (OVP) switch with integrated UVLO, adjustable OVLO, over-temperature protection, and current-sensing capability via ISNS pin. It features 54 mΩ typical RON, 29 V pin tolerance on VIN/VOUT in shutdown, and soft-start control to limit inrush current. It serves as a robust power path protector in dual-input charging architectures, especially for wireless + wired coexistence in portable devices.
For engineers reviewing the NX30P0121UK datasheet, NX30P0121UK pinout, NX30P0121UK application, or NX30P0121UK equivalent, key selection considerations include its 14.5 V default OVP threshold, 1,053:1 current mirror ratio on ISNS, WLCSP12 package footprint, -40 °C to +85 °C operating range, and enable-controlled back-to-back switching behavior under fault conditions.
Technical Context
The NX30P0121UK implements a single-channel, high-side MOSFET power switch with analog feedback-based protection logic. Its internal architecture integrates independent UVLO (2.37 V typ), OVLO (14.5 V default, adjustable via resistor divider on OVLO pin), and OTP (145 °C shutdown) comparators that gate the power FET independently of EN status.
It employs slew-rate controlled turn-on via internal soft-start timing (5 ms VIN debounce + ~2.6–4.0 ms tON) and provides real-time input current monitoring through a precision 1,053:1 current mirror output at ISNS, requiring only an external resistor to ground for voltage-based sensing (e.g., 0.767 V at IIN = 1 A with 806 Ω).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Continuous Switch Current | 3 A - Supports sustained load delivery in USB PD and wireless charging paths without derating at +85 °C ambient. |
| ON Resistance (RON) | 54 mΩ (typ) - Minimizes conduction loss and thermal rise during normal operation at full rated current. |
| OVP Threshold | 14.5 V (default), adjustable 4–20 V - Enables flexible system-level overvoltage clamping using external resistor divider on OVLO pin. |
| Pin Voltage Tolerance | 29 V on VIN/VOUT/EN in shutdown - Allows safe exposure to transient surges (e.g., VBUS spikes) without latch-up or damage. |
| Current Sensing Ratio | 1,053:1 (IIN:IISNS) - Delivers accurate, isolated input current monitoring with <±3% error across 0.5–3 A range. |
| Enable Logic | Active-HIGH EN with 1 MΩ internal pull-down - Ensures fail-safe shutdown if EN is left floating; compatible with standard GPIO drive levels. |
| Operating Temperature | -40 °C to +85 °C - Qualified for use in consumer portable electronics with extended environmental requirements. |
Pinout & Package
Package: WLCSP12 (SOT1390-8), 1.65 mm × 1.25 mm × 0.525 mm body, 0.4 mm pitch, 12 bumps, backside coating included.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (A2, B2, C2, D2) | Power Input | Main supply input; must be decoupled with ≥1 µF capacitor to GND; supports 2.5–20 V operation and 29 V surge tolerance. |
| VOUT (A3, B3, C3, D3) | Power Output | Switched output node; connects to downstream load or charger IC; shares 29 V tolerance and requires local 1 µF bypass. |
| EN (B1) | Digital Enable Input | Active-HIGH control; internal 1 MΩ pull-down ensures defined state; +29 V tolerant for robust system interfacing. |
| ISNS (C1) | Analog Current Sense Output | Current-source output (IISNS = IIN/1053); requires resistor to GND to generate proportional voltage (e.g., 0.767 V @ 1 A with 806 Ω). |
| OVLO (A1) | Analog OVLO Threshold Adjust | Accepts resistor divider from VOUT to set custom OVP level (4–20 V); defaults to 14.5 V when shorted to GND. |
| GND (D1) | Reference Ground | Primary return path for all internal circuits and external decoupling; must be low-impedance connection to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Protection Suite | UVLO (2.37 V), OVLO (14.5 V default), OTP (145 °C), plus ESD (HBM >2 kV) - Eliminates need for discrete protection components in space-constrained designs. |
| Adjustable Overvoltage Lockout | External resistor divider on OVLO pin enables precise OVP threshold tuning from 4 V to 20 V - matches varying system rail requirements without redesign. |
| Inrush Current Limiting | Internal soft-start with 5 ms VIN debounce and controlled tON (~2.6–4.0 ms) - prevents voltage droop and connector arcing during hot-plug events. |
| High-Accuracy Current Monitoring | 1,053:1 current mirror with ±3% accuracy across 0.5–3 A - enables precise input current limiting and telemetry without shunt resistor losses. |
| Ultra-Small Wafer-Level Packaging | WLCSP12 (1.65 × 1.25 mm) - Reduces PCB area by >50% vs. comparable QFN solutions while maintaining thermal performance (Rth(j-a) = 70.8 °C/W). |
Applications
| Smartphone Charging Path | Tablet Dual-Input Power Management |
|---|---|
Use Scenario: Integrating wireless charging receiver with legacy USB-C input in a single-chip PMIC architecture. IC Role / Device Role / Timing Role: High-voltage OVP switch isolating wireless charger output from main buck charger; activated only when wireless path is selected. Use Value: Prevents 29 V VBUS transients from damaging sensitive wireless receiver ICs while enabling seamless path arbitration. | Use Scenario: Managing simultaneous USB PD and proprietary adapter inputs in a large-format tablet with shared battery charging circuitry. IC Role / Device Role / Timing Role: Unidirectional power switch enforcing input priority and blocking reverse current flow between sources. Use Value: Ensures no cross-conduction between inputs and maintains strict OVP compliance (≤14.5 V) on the shared charge rail. |
| Portable Medical Monitor Power Path | USB-C Accessory Hub Protection |
Use Scenario: Providing redundant AC adapter and battery-backed operation in a handheld diagnostic device with strict safety isolation. IC Role / Device Role / Timing Role: Fault-isolating switch placed between external DC input and system power rail; responds within 70 ns to OVP events. Use Value: Meets IEC 60601 creepage/clearance requirements via 29 V pin tolerance and eliminates need for opto-isolated supervision. | Use Scenario: Protecting downstream USB data and power switches in a multi-port docking station handling variable upstream source voltages. IC Role / Device Role / Timing Role: Front-end OVP guard for all downstream ports; monitors total input current via ISNS for dynamic load balancing. Use Value: Enables per-port current limiting and real-time thermal management using single-point ISNS feedback, reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar overvoltage protection switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS25942L | 4.5–20 V input, 4 A rating, fixed 15.5 V OVP, integrated eFuse with I2C telemetry | Requires I2C host control; lacks adjustable OVP and ISNS analog output | Preferred when digital configuration and fault logging are required over analog simplicity. |
| RTQ2132B | 2.7–24 V input, 3 A rating, 14.2 V fixed OVP, no current sense output, smaller 1.2 × 1.2 mm WLCSP | No ISNS functionality; lower pin tolerance (20 V); no OVLO adjust pin | Selected for ultra-compact layouts where current monitoring is handled externally. |
Compared with NX30P0121UK, TPS25942L adds programmability but removes analog current sensing, while RTQ2132B reduces footprint at the cost of protection flexibility and telemetry capability - making NX30P0121UK optimal for analog-centric, size-constrained OVP applications needing adjustable thresholds and precision current feedback.
Availability
NX30P0121UK is available at Aetrix Electronics and suitable for smartphone charging path design, tablet dual-input power management, and portable medical monitor power path applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for NX30P0121UK 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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer markets.
The NX30P0121UK belongs to NXP's high-voltage power switch product line, designed specifically for intelligent power path management in portable electronics with stringent space, efficiency, and protection requirements.
FAQ
What is the default overvoltage protection threshold of the NX30P0121UK?
The NX30P0121UK has a default overvoltage protection threshold of 14.5 V on the VOUT pin when the OVLO pin is shorted to GND. This threshold is adjustable from 4 V to 20 V using an external resistor divider connected to the OVLO pin, based on the formula VOUTOVLO = 1.227 V × (R1 + R2)/R2. The NX30P0121UK maintains this setting across its full operating temperature range (-40 °C to +85 °C).
How does the ISNS pin function on the NX30P0121UK?
The ISNS pin on the NX30P0121UK provides a current-source output proportional to input current (IIN) flowing from VIN to VOUT, with a fixed 1,053:1 mirror ratio (IISNS = IIN/1053). To convert this to a measurable voltage, a resistor (e.g., 806 Ω) must be connected from ISNS to GND. For example, with 1 A input current and 806 Ω, the NX30P0121UK delivers 0.767 V at ISNS. The output is high-impedance when the device is disabled.
What package type and dimensions does the NX30P0121UK use?
The NX30P0121UK uses a wafer-level chip-scale package (WLCSP12), designated SOT1390-8, with dimensions of 1.65 mm × 1.25 mm × 0.525 mm and a 0.4 mm bump pitch. It contains 12 solder bumps arranged in a 3 × 4 array and includes backside coating. This ultra-compact package supports high-density PCB layouts typical in smartphones and tablets.
Does the NX30P0121UK support bidirectional current flow?
No, the NX30P0121UK is a unidirectional power switch - it conducts current only from VIN to VOUT. It does not support reverse current flow (VOUT to VIN) and lacks back-to-back FET architecture for true bidirectional blocking. Its "back-to-back OVP" designation refers to internal dual-FET topology enabling robust fault isolation in either direction of voltage stress, not current conduction.
What is the maximum continuous current rating for the NX30P0121UK?
The NX30P0121UK is rated for 3 A continuous switch current across its full operating ambient temperature range of -40 °C to +85 °C. This rating is maintained without derating up to +85 °C, supported by its thermal resistance of 70.8 °C/W (junction-to-ambient) and low 54 mΩ typical ON resistance, ensuring minimal self-heating under full load.
NX30P0121UKZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 12-UFBGA, WLCSP
- Series:
- NX3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- -
- Output Type:
- N-Channel
- Interface:
- -
- Voltage - Load:
- 2.5V ~ 20V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 3A
- Rds On (Typ):
- 54mOhm
- Input Type:
- -
- Features:
- -
- Fault Protection:
- Current Limiting (Adjustable), Over Temperature, Over Voltage, UVLO
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-WLCSP (1.65x1.25)
NX30P0121UKZ FAQ
1.How can I place an order for NX30P0121UKZ through Aetrix?
Please submit a Request for Quotation (RFQ) for NX30P0121UKZ 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 NX30P0121UKZ reliable?
The price and inventory of NX30P0121UKZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NX30P0121UKZ is usually 5 days.
3.What payment methods are accepted for NX30P0121UKZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NX30P0121UKZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NX30P0121UKZ?
NX30P0121UKZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NX30P0121UKZ 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 NX30P0121UKZ?
For technical support, including NX30P0121UKZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NX30P0121UKZ requirements.
6.How does Aetrix verify that NX30P0121UKZ is sourced from the original manufacturer or authorized distributors?
All NX30P0121UKZ 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 NX30P0121UKZ meets industry standards.
7.What is the process for return or replacement of NX30P0121UKZ?
All NX30P0121UKZ units undergo pre-shipment inspection (PSI). If there is an issue with NX30P0121UKZ, 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 NX30P0121UKZ part is unused and in its original packaging.
Return procedure for NX30P0121UKZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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