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onsemi NCP161BFCT300T2G
- Part No.:
- NCP161BFCT300T2G
- Manufacturer:
- onsemi
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
NCP161BFCT300T2G.pdf
- Description:
- IC REG LINEAR 3V 450MA 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,570
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Product details
Overview
NCP161BFCT300T2G from onsemi is a 450 mA ultra-low-noise, high-PSRR LDO regulator with fixed 3.0 V output, ±2% accuracy over load/temperature, 150 mV dropout at 450 mA, and 10 µVRMS output noise - designed for RF and analog circuits in battery-powered mobile devices.
For engineers reviewing the NCP161BFCT300T2G datasheet, pinout, applications, or equivalent options, this page delivers verified package mapping (XDFN4), validated terminal functions, confirmed thermal shutdown (160°C), active discharge exclusion, and real-world transient response data for smartphone power rail design.
Technical Context
The NCP161BFCT300T2G uses a PMOS pass transistor architecture enabling low dropout and inherent reverse-current protection. Its bandgap reference and integrated soft-start ensure stable startup with 1 µF ceramic input/output capacitors without ESR requirements.
It features enable-controlled operation (EN threshold: 1.2 V high, 0.4 V low), thermal shutdown with hysteresis (160°C trip / 140°C reset), and current limiting (700 mA typ.) - all specified across −40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2% over full load (0–450 mA) and temperature (−40°C to +125°C) |
| Dropout Voltage | 165 mV max at 450 mA - enables regulation from 3.165 V input in 3.0 V systems |
| PSRR | 98 dB typ. at 1 kHz - suppresses switching noise from adjacent DC-DC converters |
| Output Noise | 10 µVRMS (10 Hz–100 kHz) - preserves SNR in RF receivers and precision ADCs |
| Quiescent Current | 18 µA typ. - extends battery life in always-on sensor or standby rails |
| Enable Threshold | VENH = 1.2 V, VENL = 0.4 V - compatible with standard GPIO logic levels |
| Thermal Shutdown | 160°C trip with 20°C hysteresis - prevents permanent damage during sustained overload |
Pinout & Package
XDFN4 package (1 mm × 1 mm × 0.4 mm, Case 711AJ), thermally enhanced with exposed EPAD tied to GND for improved power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input voltage supply | Accepts 1.9–5.5 V; requires 1 µF ceramic capacitor placed adjacent to minimize trace inductance |
| 2 (GND) | Ground reference | Common return path; EPAD must be soldered to PCB ground plane for thermal performance |
| 3 (EN) | Enable control input | Pull ≥1.2 V to activate regulator; ≤0.4 V disables output and engages passive discharge (no active discharge in BF version) |
| 4 (OUT) | Regulated output | Delivers stable 3.0 V; bypassed with 1 µF X7R/X5R ceramic capacitor for optimal transient response |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise | 10 µVRMS output noise enables clean power for RF transceivers and high-resolution ADCs |
| High PSRR | 98 dB at 1 kHz suppresses ripple from noisy system supplies without additional filtering |
| Low dropout | 165 mV at 450 mA allows operation from single-cell Li-ion (3.2 V min) with margin |
| Small footprint | XDFN4 (1 mm × 1 mm) reduces PCB area vs. SOT23-5 while improving thermal resistance (198.1°C/W) |
| Robust protection | Integrated current limit (700 mA), thermal shutdown (160°C), and short-circuit immunity prevent field failures |
Applications
| Smartphone Baseband Power | Wi-Fi/Bluetooth RF Front-End |
|---|---|
|
Use Scenario: Supplying 3.0 V to LTE/5G baseband processors requiring ultra-low noise and fast load transient response. IC Role / Device Role / Timing Role: Primary LDO for core logic voltage domain with tight regulation under dynamic CPU load changes. Use Value: 10 µVRMS noise and ±2% accuracy maintain signal integrity and reduce bit error rates in high-speed modems. |
Use Scenario: Powering Wi-Fi 6/6E and Bluetooth 5.3 RF transceivers where supply ripple directly impacts EVM and sensitivity. IC Role / Device Role / Timing Role: Dedicated LDO for RF synthesizer and PA bias rails, decoupled from noisy digital domains. Use Value: 98 dB PSRR at 1 kHz attenuates switching noise from nearby buck converters, preserving RF spectral purity. |
| Industrial IoT Sensor Node | Automotive Camera Module |
|
Use Scenario: Providing regulated 3.0 V to ultra-low-power microcontrollers and MEMS sensors in battery-operated edge nodes. IC Role / Device Role / Timing Role: Always-on LDO for wake-up logic and sensor interface, optimized for <20 µA quiescent current. Use Value: 18 µA IQ extends 2000 mAh coin-cell lifetime beyond 5 years in periodic-sampling applications. |
Use Scenario: Delivering clean 3.0 V to image signal processors (ISPs) and high-speed MIPI interfaces in automotive ADAS cameras. IC Role / Device Role / Timing Role: Secondary LDO for ISP core voltage, operating alongside primary 1.2 V and 1.8 V rails. Use Value: Use Value: 150 mV dropout ensures stable regulation during cold-crank (6.5 V battery dip to 5.5 V input), maintaining camera uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP161AFCT300T2G | Same XDFN4 package and 3.0 V output, but includes active output discharge (280 Ω pull-down on disable) | Required when rapid output discharge is needed for sequencing or safety-critical shutdown | Select if system demands controlled VOUT decay; otherwise NCP161BFCT300T2G saves cost and complexity |
| MCP1703T-3002E/MB | 300 mA output, 600 mV dropout at full load, 30 µVRMS noise, SOT-23 package | Lower current and higher noise limit use to non-RF analog or low-speed MCU rails | Choose only for cost-sensitive, lower-performance applications where 450 mA and 10 µVRMS are not required |
Compared with NCP161AFCT300T2G, the NCP161BFCT300T2G omits active discharge - reducing BOM count and leakage risk - while matching all key RF-grade specs; versus MCP1703, it delivers 50% higher current, 2× lower noise, and 3.6× lower dropout for demanding mobile power rails.
Availability
NCP161BFCT300T2G is available at Aetrix Electronics and suitable for smartphone baseband power, Wi-Fi RF front-end supplies, and industrial IoT sensor node designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP161BFCT300T2G 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, and IoT applications - with leadership in power management, imaging, and signal processing.
The NCP161 series targets RF and high-fidelity analog power delivery, emphasizing ultra-low noise, high PSRR, and minimal footprint for space-constrained mobile and wireless systems.
FAQ
What is the maximum input voltage rating for the NCP161BFCT300T2G?
The NCP161BFCT300T2G has an absolute maximum input voltage of 6 V. Operation above 5.5 V is outside the recommended operating range and may compromise reliability or parametric performance. For continuous operation, VIN must remain between 1.9 V and 5.5 V per datasheet specifications.
Does the NCP161BFCT300T2G include active output discharge functionality?
No, the NCP161BFCT300T2G does not include active output discharge. The "B" suffix denotes the non-active-discharge variant. When disabled via EN pin, the output floats - unlike the "A" variant (e.g., NCP161AFCT300T2G), which pulls VOUT to GND through a 280 Ω resistor. This simplifies design where uncontrolled discharge is acceptable.
What ceramic capacitor dielectric is recommended for the NCP161BFCT300T2G output?
X7R or X5R dielectric ceramic capacitors are recommended for the NCP161BFCT300T2G output. These offer stable capacitance over temperature and DC bias - critical for maintaining 1 µF effective value at 3.0 V output. Avoid Y5V or Z5U due to excessive capacitance loss under bias.
Can the NCP161BFCT300T2G operate with less than 1 µF output capacitance?
The NCP161BFCT300T2G is guaranteed stable with ≥0.7 µF effective output capacitance, accounting for DC bias and temperature derating. However, 1 µF is the recommended minimum for full transient performance and PSRR specification compliance - especially for RF applications where stability margins are critical.
What is the thermal resistance (θJA) of the NCP161BFCT300T2G in its XDFN4 package?
The NCP161BFCT300T2G in XDFN4 package (Case 711AJ) has a typical junction-to-ambient thermal resistance (θJA) of 198.1°C/W when mounted on a standard JEDEC test board. Actual performance improves with larger copper area and 2 oz copper layers - e.g., dropping to ~170°C/W with 400 mm² of 2 oz Cu ground plane.
NCP161BFCT300T2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.275V @ 450mA
- Current - Output:
- 450mA
- Current - Quiescent (Iq):
- 23 µA
- Current - Supply (Max):
- -
- PSRR:
- 91dB ~ 48dB (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)
NCP161BFCT300T2G FAQ
1.How can I place an order for NCP161BFCT300T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP161BFCT300T2G 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 NCP161BFCT300T2G reliable?
The price and inventory of NCP161BFCT300T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP161BFCT300T2G is usually 5 days.
3.What payment methods are accepted for NCP161BFCT300T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP161BFCT300T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP161BFCT300T2G?
NCP161BFCT300T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP161BFCT300T2G 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 NCP161BFCT300T2G?
For technical support, including NCP161BFCT300T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP161BFCT300T2G requirements.
6.How does Aetrix verify that NCP161BFCT300T2G is sourced from the original manufacturer or authorized distributors?
All NCP161BFCT300T2G 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 NCP161BFCT300T2G meets industry standards.
7.What is the process for return or replacement of NCP161BFCT300T2G?
All NCP161BFCT300T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP161BFCT300T2G, 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 NCP161BFCT300T2G part is unused and in its original packaging.
Return procedure for NCP161BFCT300T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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