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onsemi NCP161BFCT514T2G
- Part No.:
- NCP161BFCT514T2G
- Manufacturer:
- onsemi
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
NCP161BFCT514T2G.pdf
- Description:
- IC REG LINEAR 5.14V 450MA 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,549
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Product details
Overview
NCP161BFCT514T2G from onsemi is a 450 mA ultra-low-noise, high-PSRR LDO regulator with fixed 5.14 V output, 150 mV dropout at full load, ±2% output accuracy over load/temperature, and 10 µVRMS integrated noise (10 Hz–100 kHz). Designed for RF and analog power rails in smartphones and wireless LAN devices, it operates from 1.9 V to 5.5 V input and supports stable regulation with only 1 µF ceramic input/output capacitors.
For engineers reviewing the NCP161BFCT514T2G datasheet, pinout, applications, or equivalent options, this page delivers verified package mapping (XDFN4), validated thermal performance (RJA = 198.1 °C/W), confirmed enable logic thresholds (VENH = 1.2 V, VENL = 0.4 V), and real-world transient response data for battery-powered RF subsystems.
Technical Context
The NCP161BFCT514T2G implements a PMOS pass transistor architecture enabling low dropout and inherent reverse-current blocking. Its bandgap reference and integrated soft-start ensure monotonic startup without output overshoot under varying load conditions.
It features active discharge only in Version A variants; the "B" suffix (as in NCP161BFCT514T2G) denotes non-active-discharge operation-output discharges only through external circuitry. Thermal shutdown triggers at 160°C (rising) and resets at 140°C (falling), with current limiting set to 700 mA typical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.14 V ±2% - tightly regulated rail for RF power amplifiers requiring precise bias voltage. |
| Max Output Current | 450 mA continuous - sufficient for powering dual-band Wi-Fi transceivers or cellular front-end modules. |
| Dropout Voltage | 105 mV typ. at 450 mA (VOUT = 5.14 V) - enables operation from single-cell Li-ion (3.0–4.2 V) with ≥1.1 V headroom. |
| PSRR | 98 dB typ. at 1 kHz - suppresses switching noise from DC-DC converters feeding adjacent digital blocks. |
| Output Noise | 10 µVRMS (10 Hz–100 kHz) - meets stringent phase-noise requirements of local oscillators and ADC reference supplies. |
| Quiescent Current | 18 µA typ. - extends battery life in always-on sensor or connectivity subsystems. |
| Enable Threshold | VENH = 1.2 V, VENL = 0.4 V - compatible with standard GPIOs and allows clean sequencing with host processors. |
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 |
|---|---|---|
| IN | Input voltage supply | Accepts 1.9–5.5 V; requires 1 µF X7R/X5R ceramic capacitor placed adjacent to minimize trace inductance. |
| OUT | Regulated output | Delivers stable 5.14 V; bypassed with 1 µF ceramic capacitor; no ESR requirement but ≤2 Ω recommended. |
| EN | Enable control input | Active-high logic: >1.2 V enables regulation; <0.4 V disables output and halts quiescent draw to 0.01 µA. |
| GND | Ground reference | Common return path; EPAD must be soldered to PCB ground plane to achieve RJA = 198.1 °C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise | 10 µVRMS (10 Hz–100 kHz) - preserves signal integrity in RF receiver chains and high-resolution ADC references. |
| High PSRR | 98 dB @ 1 kHz - rejects ripple from shared buck converter outputs without additional filtering stages. |
| Low dropout | 105 mV @ 450 mA (5.14 V output) - maximizes usable battery voltage range in portable designs. |
| Stable with 1 µF ceramics | No minimum ESR required - eliminates need for larger, costlier tantalum or polymer capacitors. |
| Thermal protection | Auto-shutdown at 160°C, auto-restart at 140°C - prevents permanent damage during sustained overload or poor heatsinking. |
Applications
| Smartphone RF Front-End | Wi-Fi 6/6E Transceiver Bias |
|---|---|
Use Scenario: Powering PA drivers and LNAs in multi-band LTE/5G handsets where supply noise directly impacts ACLR and EVM. IC Role / Device Role / Timing Role: Primary low-noise bias regulator for RF power amplifier stages operating at 5.14 V. Use Value: 10 µVRMS noise and 98 dB PSRR prevent AM-to-PM distortion and maintain spectral purity under dynamic load. |
Use Scenario: Supplying 5.14 V to dual-band Wi-Fi 6E transceivers (2.4 GHz + 5/6 GHz) in compact tablets and hotspots. IC Role / Device Role / Timing Role: Dedicated LDO for RF synthesizer VCO and mixer bias, decoupled from noisy digital domains. Use Value: 150 mV dropout enables direct regulation from 3.8 V system rail, reducing heat generation vs. higher-dropout alternatives. |
| Industrial IoT Sensor Hub | Automotive Telematics Module |
Use Scenario: Providing clean 5.14 V to ultra-low-power wideband ADCs and RF sub-GHz transceivers in battery-operated edge nodes. IC Role / Device Role / Timing Role: Always-on LDO for precision analog sensing and sub-GHz LoRa/Zigbee radio subsystems. Use Value: 18 µA quiescent current extends 10-year battery life; ±2% accuracy ensures consistent sensor calibration across temperature. |
Use Scenario: Regulating 5.14 V for GNSS receivers and LTE modems in automotive-grade telematics control units (TCUs). IC Role / Device Role / Timing Role: Secondary LDO supplying RF section of dual-mode modem, isolated from engine-bay switching noise. Use Value: -40°C to +125°C guaranteed operation; thermal shutdown protects against enclosure overheating in parked vehicle scenarios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B514MR-G | 5.14 V fixed output, 300 mA max, 120 mV dropout @ 300 mA, 25 µVRMS noise, SOT-25 package | Limited current drive and higher noise make it unsuitable for 450 mA RF PAs or low-noise ADC references. | Select when board space permits SOT-25 and load current stays ≤300 mA; verify PSRR profile matches 1–10 kHz interference bands. |
| Richtek RT9080AL-514GJ6F | 5.14 V fixed output, 500 mA max, 180 mV dropout @ 500 mA, 12 µVRMS noise, DFN-6 package | Higher dropout and larger 1.6 mm × 1.6 mm footprint increase thermal resistance and PCB area vs. NCP161BFCT514T2G's 1 mm × 1 mm XDFN4. | Prefer for higher-current applications (>450 mA) where 180 mV dropout is acceptable; avoid if layout space or thermal budget is constrained. |
Compared with XC6210B514MR-G and RT9080AL-514GJ6F, the NCP161BFCT514T2G uniquely balances 450 mA capability, 105 mV dropout, and 10 µVRMS noise in a 1 mm × 1 mm thermally optimized package-enabling compact, high-performance RF power delivery where size, efficiency, and spectral purity are co-constrained.
Availability
NCP161BFCT514T2G is available at Aetrix Electronics and suitable for smartphone RF front-ends, Wi-Fi 6E transceiver bias, and industrial IoT sensor hubs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for NCP161BFCT514T2G 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 leader delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications, with emphasis on high-performance analog and power management ICs.
The NCP161 series is designed specifically for noise-sensitive RF and analog circuits-delivering ultra-low noise, high PSRR, and minimal dropout in wafer-level chip-scale and micro-XDFN packages for space-constrained portable electronics.
FAQ
What is the maximum input voltage rating for the NCP161BFCT514T2G?
The NCP161BFCT514T2G has an absolute maximum input voltage rating of 6 V. Operation above 5.5 V is not recommended per electrical specifications, and sustained exposure beyond 6 V may cause permanent damage. The device is rated for continuous operation from 1.9 V to 5.5 V input, making it ideal for single-cell Li-ion systems with tight voltage margins.
Does the NCP161BFCT514T2G include active output discharge?
No, the NCP161BFCT514T2G does not include active output discharge. The "B" suffix explicitly denotes the non-active-discharge version. When disabled via the EN pin, the output floats and discharges only through external load or parasitic paths. For applications requiring controlled discharge (e.g., fast power-down sequencing), an external MOSFET or resistor network must be added.
What ceramic capacitor dielectric is recommended for NCP161BFCT514T2G input and output?
X7R or X5R dielectric ceramic capacitors are recommended for both input (CIN) and output (COUT) of the NCP161BFCT514T2G. These dielectrics provide stable capacitance over temperature (±15% for X7R, ±15% for X5R) and low ESR/ESL-critical for maintaining stability and transient response. Avoid Y5V or Z5U due to excessive DC bias and temperature drift.
Can the NCP161BFCT514T2G operate reliably at −40°C ambient temperature?
Yes, the NCP161BFCT514T2G is fully specified and tested from −40°C to +125°C junction temperature. Electrical characteristics-including dropout voltage, PSRR, and output accuracy-are guaranteed across this range. At −40°C ambient, proper PCB copper area and thermal vias are required to maintain junction temperature within limits under 450 mA load.
What is the thermal resistance (RJA) of the NCP161BFCT514T2G in its XDFN4 package?
The NCP161BFCT514T2G in XDFN4 package (case 711AJ) has a measured junction-to-ambient thermal resistance (RJA) of 198.1 °C/W, per JEDEC JESD51-7 test board conditions. This value assumes 1 oz copper, 1 in² PCB copper area, and proper connection of the EPAD to the ground plane. Doubling copper weight to 2 oz reduces RJA by ~15%.
NCP161BFCT514T2G 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):
- 5.14V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.185V @ 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)
NCP161BFCT514T2G FAQ
1.How can I place an order for NCP161BFCT514T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP161BFCT514T2G 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 NCP161BFCT514T2G reliable?
The price and inventory of NCP161BFCT514T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP161BFCT514T2G is usually 5 days.
3.What payment methods are accepted for NCP161BFCT514T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP161BFCT514T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP161BFCT514T2G?
NCP161BFCT514T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP161BFCT514T2G 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 NCP161BFCT514T2G?
For technical support, including NCP161BFCT514T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP161BFCT514T2G requirements.
6.How does Aetrix verify that NCP161BFCT514T2G is sourced from the original manufacturer or authorized distributors?
All NCP161BFCT514T2G 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 NCP161BFCT514T2G meets industry standards.
7.What is the process for return or replacement of NCP161BFCT514T2G?
All NCP161BFCT514T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP161BFCT514T2G, 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 NCP161BFCT514T2G part is unused and in its original packaging.
Return procedure for NCP161BFCT514T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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