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onsemi NCP163AFCS290T2G
- Part No.:
- NCP163AFCS290T2G
- Manufacturer:
- onsemi
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
NCP163AFCS290T2G.pdf
- Description:
- IC REG LINEAR 2.9V 250MA 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,560
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Product details
Overview
NCP163AFCS290T2G from onsemi is a 250 mA ultra-low-noise, high-PSRR LDO regulator with 2.9 V fixed output, 80 mV dropout at full load, 6.5 µVRMS output noise, and 92 dB PSRR at 1 kHz-designed for RF and analog circuits in smartphones and wireless LAN devices.
For engineers reviewing the NCP163AFCS290T2G datasheet, pinout, applications, or equivalent options, key selection criteria include its WLCSP4 package footprint (0.64 mm × 0.64 mm), active discharge capability, ±2% output accuracy over load/temperature, and compatibility with 1 µF ceramic input/output capacitors.
Technical Context
The NCP163AFCS290T2G implements a PMOS pass transistor architecture with integrated soft-start and thermal shutdown (160°C trip, 140°C reset). It features an enable-controlled active discharge path (280 Ω) and supports stable operation with minimal 0.7 µF effective output capacitance.
Its bias network delivers ultra-low quiescent current (12 µA typ.) and standby current (0.1 µA typ.), while the bandgap reference and error amplifier maintain ±2% output voltage accuracy across −40°C to +125°C and 0–250 mA load range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.9 V ±2% - ensures precise rail generation for 2.85–2.95 V-sensitive analog/RF ICs without external feedback. |
| Max Output Current | 250 mA - sufficient for powering RF transceivers, camera ISPs, or baseband processors in portable devices. |
| Dropout Voltage | 80 mV at 250 mA - enables regulation from 3.0 V input down to 2.9 V output, maximizing battery runtime in single-cell Li-ion systems. |
| Output Noise | 6.5 µVRMS (10 Hz–100 kHz) - minimizes phase noise injection into VCOs and ADC references in RF front-ends. |
| PSRR | 92 dB at 1 kHz - suppresses switching noise from DC-DC converters feeding adjacent power domains. |
| Quiescent Current | 12 µA typ. - extends standby time in always-on sensor nodes and IoT edge devices. |
| Enable Threshold | VENH = 1.2 V, VENL = 0.4 V - compatible with 1.8 V/3.3 V GPIO logic without level-shifting. |
Pinout & Package
Package: WLCSP4 (Case 567KA), 0.64 mm × 0.64 mm × 0.33 mm, Pb-free, halogen-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply | Accepts 2.2–5.5 V input; requires local 1 µF X7R/X5R ceramic capacitor for stability and transient response. |
| OUT | Regulated output | Delivers 2.9 V ±2%; must be bypassed with 1 µF ceramic capacitor placed adjacent to pin for low-ESR filtering. |
| EN | Chip enable control | Active-high logic: >1.2 V enables regulation; <0.4 V disables output and activates 280 Ω active discharge to GND. |
| GND | Ground reference | Common return path for IN, OUT, and EN; connects to PCB ground plane to minimize noise coupling and improve thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise | 6.5 µVRMS output noise enables clean power for RF VCOs and high-resolution ADCs without additional filtering. |
| High PSRR | 92 dB at 1 kHz suppresses ripple from noisy switchers, reducing need for cascaded LDO stages in multi-rail systems. |
| Active discharge | 280 Ω internal pull-down discharges output within microseconds after disable, preventing unintended wake-up of downstream circuitry. |
| Low dropout | 80 mV dropout at 250 mA allows operation from aging batteries or tightly regulated intermediate rails without headroom penalty. |
| Thermal protection | 160°C junction shutdown with 20°C hysteresis prevents permanent damage during sustained overload or poor heatsinking. |
Applications
| Smartphone RF Front-End | Wireless LAN Baseband |
|---|---|
Use Scenario: Powering 2.9 V LNA and mixer stages in LTE/5G sub-6 GHz transceivers. IC Role / Device Role / Timing Role: Low-noise local regulation of RF signal chain bias rails. Use Value: 6.5 µVRMS noise avoids phase noise degradation in VCOs; 92 dB PSRR isolates RF section from noisy SoC power domains. | Use Scenario: Supplying 2.9 V core voltage to WLAN MAC/baseband ICs in tablets and access points. IC Role / Device Role / Timing Role: Stable, fast-transient LDO for digital baseband logic requiring clean, well-regulated supply. Use Value: 80 mV dropout extends usable battery life; 250 mA capacity supports burst-mode packet processing without voltage sag. |
| Digital Camera Image Signal Processor | IoT Sensor Node Analog Front-End |
Use Scenario: Providing 2.9 V analog supply to CMOS image sensor ISP and ADC blocks. IC Role / Device Role / Timing Role: Precision analog rail generator with low noise and tight DC accuracy. Use Value: ±2% output accuracy maintains consistent ADC reference scaling; 6.5 µVRMS noise preserves dynamic range in low-light imaging. | Use Scenario: Powering 2.9 V precision op-amps and SAR ADCs in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Ultra-low-quiescent LDO for always-on analog sensing paths. Use Value: 12 µA quiescent current enables multi-year operation on coin cells; active discharge prevents leakage-induced false triggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A2029PDQNR | 290 mV dropout at 250 mA; 7 µVRMS noise; no active discharge; SOT-23-5 package (2.9 mm × 2.8 mm). | Larger footprint; higher dropout limits use in low-headroom battery systems; lacks active discharge for fast rail collapse. | Select when board space permits larger package and active discharge is not required. |
| MCP1700T-2902E/TT | 250 mA max; 175 mV dropout at 250 mA; 30 µVRMS noise; SOT-23-3 (no EN pin); no active discharge. | No enable control or active discharge; significantly higher noise degrades RF/analog performance; simpler 3-pin interface. | Select only for cost-sensitive, non-RF applications where enable control and ultra-low noise are unnecessary. |
Compared with TPS7A2029PDQNR and MCP1700T-2902E/TT, the NCP163AFCS290T2G offers superior noise performance (6.5 vs. 7/30 µVRMS), lower dropout (80 vs. 290/175 mV), and integrated active discharge-making it optimal for compact, noise-sensitive RF and analog designs where WLCSP4 size and fast turn-off are critical.
Availability
NCP163AFCS290T2G is available at Aetrix Electronics and suitable for smartphone RF modules, wireless LAN baseband subsystems, and digital camera ISP power delivery requiring stable component supply with guaranteed long-term availability.
Supply support for NCP163AFCS290T2G 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
onsemi is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP163AFCS290T2G belongs to onsemi's ultra-low-noise LDO family, engineered specifically for RF and high-performance analog circuits where power integrity directly impacts signal fidelity and system sensitivity.
FAQ
What is the output voltage tolerance of the NCP163AFCS290T2G over temperature and load?
The NCP163AFCS290T2G maintains ±2% output voltage accuracy across −40°C to +125°C junction temperature and 0–250 mA load range, as specified in the Electrical Characteristics table under "Output Voltage Accuracy" with VIN = VOUT(NOM) + 1 V. This tolerance applies to the WLCSP4 package variant and ensures reliable operation in thermally demanding portable environments.
Does the NCP163AFCS290T2G include active output discharge, and how does it function?
Yes, the NCP163AFCS290T2G includes active output discharge. When the EN pin voltage falls below 0.4 V, the internal 280 Ω discharge resistor connects OUT to GND, rapidly collapsing the output voltage. This feature is confirmed in the Pin Function Description and Applications Information sections of the datasheet and prevents unintended wake-up of downstream circuitry during power sequencing.
What is the minimum recommended output capacitor for stable operation of the NCP163AFCS290T2G?
The NCP163AFCS290T2G is designed to remain stable with a minimum effective output capacitance of 0.7 µF, though a 1 µF X7R or X5R ceramic capacitor is recommended. This value accounts for capacitance loss due to DC bias, temperature, and package size-especially critical for small-case 0201/0402 MLCCs used in space-constrained WLCSP4 layouts.
Can the NCP163AFCS290T2G operate with input voltages below 2.2 V?
No, the NCP163AFCS290T2G has a specified operating input voltage range of 2.2 V to 5.5 V. Operation below 2.2 V is outside Absolute Maximum Ratings and may result in unregulated output, increased dropout, or functional failure. The device will not regulate correctly at VIN < 2.2 V, even if VOUT remains above dropout threshold.
What thermal protection features does the NCP163AFCS290T2G provide?
The NCP163AFCS290T2G incorporates thermal shutdown with a typical trip point of 160°C and hysteresis reset at 140°C. This protection is implemented via an internal thermal sensor and disables the pass transistor until junction temperature falls below the reset threshold. It is explicitly documented in the Absolute Maximum Ratings and Applications Information sections as safeguard against catastrophic overheating.
NCP163AFCS290T2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 250mA
- Current - Quiescent (Iq):
- 20 µA
- Current - Supply (Max):
- -
- PSRR:
- 91dB ~ 60dB (100Hz ~ 100kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Soft Start
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-WLCSP (0.64x0.64)
NCP163AFCS290T2G FAQ
1.How can I place an order for NCP163AFCS290T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP163AFCS290T2G 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 NCP163AFCS290T2G reliable?
The price and inventory of NCP163AFCS290T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP163AFCS290T2G is usually 5 days.
3.What payment methods are accepted for NCP163AFCS290T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP163AFCS290T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP163AFCS290T2G?
NCP163AFCS290T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP163AFCS290T2G 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 NCP163AFCS290T2G?
For technical support, including NCP163AFCS290T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP163AFCS290T2G requirements.
6.How does Aetrix verify that NCP163AFCS290T2G is sourced from the original manufacturer or authorized distributors?
All NCP163AFCS290T2G 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 NCP163AFCS290T2G meets industry standards.
7.What is the process for return or replacement of NCP163AFCS290T2G?
All NCP163AFCS290T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP163AFCS290T2G, 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 NCP163AFCS290T2G part is unused and in its original packaging.
Return procedure for NCP163AFCS290T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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