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onsemi NCP161BFCS514T2G
- Part No.:
- NCP161BFCS514T2G
- Manufacturer:
- onsemi
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
NCP161BFCS514T2G.pdf
- Description:
- IC REG LINEAR 5.14V 450MA 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
NCP161BFCS514T2G from onsemi is a 450 mA ultra-low-noise, high-PSRR LDO regulator with fixed 5.14 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 wireless devices.
For engineers reviewing the NCP161BFCS514T2G datasheet, pinout, applications, or equivalent options, this page delivers verified package mapping (WLCSP4), terminal functions, thermal characteristics, active-discharge exclusion, and real-world transient performance data for low-noise power rail design.
Technical Context
The NCP161BFCS514T2G uses a PMOS pass transistor architecture enabling ultra-low dropout and reverse-current protection via inherent body diode. It operates across 1.9 V to 5.5 V input while maintaining regulation at 5.14 V output under 450 mA load.
Its enable logic (EN pin threshold: 0.4 V low, 1.2 V high) controls regulator activation and disables active discharge - distinguishing it from "A"-suffix variants. Stability is guaranteed with ≥1 µF ceramic output capacitance and no ESR requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.14 V ±2% - ensures precise biasing for 5 V-tolerant RF front-ends and analog signal chains without external feedback. |
| Max Output Current | 450 mA - supports moderate-power RF ICs (e.g., Wi-Fi transceivers, cellular PA drivers) without thermal derating in WLCSP4 package. |
| Dropout Voltage | 105–185 mV at 450 mA - enables operation from single-cell Li-ion (3.0–4.2 V) or 5 V rails with minimal headroom loss. |
| PSRR | 98 dB @ 1 kHz (20 mA load) - suppresses switching noise from adjacent DC-DC converters feeding sensitive RF/analog stages. |
| Output Noise | 10 µVRMS (10 Hz–100 kHz) - meets stringent phase-noise and SNR requirements in VCOs, ADC references, and LNA bias rails. |
| Quiescent Current | 18 µA typ. - extends battery life in always-on sensor nodes and standby modes of portable communication devices. |
| Enable Threshold | VENH = 1.2 V, VENL = 0.4 V - compatible with standard GPIOs and allows clean sequencing with microcontrollers or PMICs. |
Pinout & Package
Package: WLCSP4 (0.64 mm × 0.64 mm × 0.33 mm), Pb-free, RoHS-compliant, bottom-exposed pad tied to GND for thermal relief.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | IN | Input voltage supply pin - accepts 1.9–5.5 V; requires local 1 µF ceramic decoupling to minimize AC impedance. |
| A2 | OUT | Regulated 5.14 V output - must be bypassed with ≥1 µF X7R/X5R ceramic capacitor placed adjacent to pin for stability. |
| B1 | EN | Chip enable - <0.4 V disables regulator and activates internal pull-down (200 nA); >1.2 V enables regulation (no active discharge). |
| B2 | GND | Common ground reference - connects to PCB ground plane; exposed pad (EPAD) must be soldered to GND for thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise | 10 µVRMS (10 Hz–100 kHz) - preserves signal integrity in RF receiver chains and precision analog front-ends. |
| High PSRR | 98 dB @ 1 kHz - rejects ripple from noisy switchers powering mixed-signal SoCs without additional filtering. |
| Low dropout | 105 mV @ 5.14 V/450 mA - sustains regulation down to VIN = 5.245 V, critical for brownout resilience in 5 V systems. |
| Minimal external components | Stable with 1 µF input + 1 µF output ceramic caps - reduces BOM count and PCB area in space-constrained mobile designs. |
| Thermal protection | 160°C shutdown / 140°C reset - prevents permanent damage during sustained overload or poor heatsinking in sealed enclosures. |
| No active discharge | EN low disables output but leaves VOUT floating - avoids unintended discharge of backup rails or coupled analog circuitry. |
Applications
| 5G NR Front-End Module Bias | Smartphone Camera ISP Core Supply |
|---|---|
|
Use Scenario: Powering GaAs pHEMT driver amplifiers and T/R switches in sub-6 GHz 5G handsets where supply noise directly impacts ACLR and EVM. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO delivering stable 5.14 V bias to RF power stages independent of noisy system PMIC outputs. Use Value: 10 µVRMS noise and 98 dB PSRR prevent AM-to-PM distortion and maintain >35 dB ACLR under full transmit power. |
Use Scenario: Supplying image signal processor (ISP) core logic and analog pixel processing blocks in multi-camera smartphone platforms. IC Role / Device Role / Timing Role: Primary 5.14 V rail generator with fast load transient response (<±40 mV) to handle burst-mode ISP compute cycles. Use Value: 150 mV dropout and 450 mA capability ensure uninterrupted operation during peak ISP loads without brownout resets. |
| Wi-Fi 6/6E Transceiver Reference Voltage | Industrial IoT Sensor Node RF Subsystem |
|
Use Scenario: Providing clean 5.14 V reference to Wi-Fi 6E transceivers (e.g., QCA6391) operating in crowded 5 GHz/6 GHz bands. IC Role / Device Role / Timing Role: Dedicated LDO for RF synthesizer VCO tuning and ADC/DAC reference buffers requiring ultra-low phase noise. Use Value: 10 µVRMS noise minimizes VCO phase jitter, enabling <−45 dBc in-band EVM and compliant spectral mask performance. |
Use Scenario: Powering LoRa/GNSS RF ICs and low-power MCU peripherals in battery-operated environmental monitoring nodes. IC Role / Device Role / Timing Role: Efficient 5.14 V regulator with 18 µA quiescent current and 0.1 µA shutdown current for multi-year battery life. Use Value: Enables >10-year operation on CR2032 cells by minimizing sleep-mode leakage while supporting 450 mA burst TX peaks. |
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 | Same 5.14 V fixed output, 400 mA rating, 120 mV dropout, but only 25 µVRMS noise and 70 dB PSRR @ 1 kHz. | Lacks RF-grade noise/PSRR performance; suitable for non-critical digital I/O rails, not RF/analog bias. | Select when cost sensitivity outweighs RF performance needs and 400 mA suffices. |
| ROHM BD05HA5WEFS-M | 5.0 V output (not 5.14 V), 500 mA, 150 mV dropout, 12 µVRMS, 90 dB PSRR @ 1 kHz, includes active discharge. | Requires level-shifting for 5.14 V–dependent circuits; active discharge may conflict with hold-up capacitors in analog sections. | Choose only if 5.0 V tolerance is acceptable and active discharge is required for system-level power sequencing. |
Compared with XC6210B514MR-G and BD05HA5WEFS-M, the NCP161BFCS514T2G uniquely delivers 5.14 V precision, 10 µVRMS noise, and 98 dB PSRR in a 0.64 mm² WLCSP - making it irreplaceable for RF biasing where voltage accuracy and spectral purity are non-negotiable.
Availability
NCP161BFCS514T2G is available at Aetrix Electronics and suitable for 5G front-end modules, smartphone camera ISPs, and Wi-Fi 6E transceivers requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for NCP161BFCS514T2G 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 focused on energy-efficient innovation for automotive, industrial, cloud, and intelligent edge applications.
The NCP161 series targets ultra-low-noise power delivery for RF and analog circuits - specifically engineered to replace noisy switching regulators in sensitive signal paths while minimizing board space and external components.
FAQ
What is the output voltage tolerance of the NCP161BFCS514T2G over temperature and load?
The NCP161BFCS514T2G maintains ±2% output voltage accuracy across −40°C to +125°C junction temperature and 0–450 mA load range. This is verified per datasheet Section 4 (Electrical Characteristics) with VIN = VOUT(NOM) + 1 V and 1 µF ceramic input/output capacitors. The 5.14 V nominal output remains within 5.037–5.243 V under all specified conditions, ensuring reliable biasing for voltage-sensitive RF ICs.
Does the NCP161BFCS514T2G include active output discharge?
No, the NCP161BFCS514T2G does not include active output discharge. The "B" suffix explicitly denotes the non-active-discharge variant, unlike "A"-suffix parts (e.g., NCP161AFCS514T2G). When EN is pulled low (<0.4 V), the pass transistor turns off and quiescent current drops to 0.01 µA, but the output floats - no internal discharge path is activated. This behavior is confirmed in the datasheet's PIN FUNCTION DESCRIPTION and APPLICATIONS INFORMATION sections.
Which package type is used by the NCP161BFCS514T2G, and what are its thermal characteristics?
The NCP161BFCS514T2G uses the WLCSP4 package (Case 567KA), measuring 0.64 mm × 0.64 mm × 0.33 mm with an exposed thermal pad. Its junction-to-ambient thermal resistance (RJA) is 108°C/W on a JEDEC-standard board (JESD51-7), enabling 450 mA operation up to +85°C ambient with adequate PCB copper area. Thermal shutdown triggers at 160°C (typ.) and resets at 140°C (typ.), as specified in Absolute Maximum Ratings and Typical Characteristics (Figures 49, 25–26).
Can the NCP161BFCS514T2G operate with input voltage below 5.14 V?
No - the NCP161BFCS514T2G requires VIN ≥ VOUT + dropout voltage to regulate. With 5.14 V output and minimum dropout of 105 mV (at 450 mA), VIN must be ≥5.245 V for full-load regulation. At lighter loads, dropout decreases (e.g., 30 mV at 1 mA), allowing operation down to ~5.17 V. Operation below 5.14 V is unsupported; the device enters dropout and output tracks VIN minus RDS(on) × ILOAD, per Figure 18–20 in the datasheet.
What are the recommended input and output capacitors for the NCP161BFCS514T2G?
The NCP161BFCS514T2G requires ≥1 µF X7R or X5R ceramic capacitors for both input (CIN) and output (COUT), placed as close as possible to their respective pins. These capacitors must have low ESL/ESR; tantalum types are discouraged due to high ESR (>2 Ω max for COUT). The device remains stable down to 0.7 µF effective COUT (accounting for DC bias derating), as validated in Figure 36 (Stability vs. ESR) and Applications Information section.
NCP161BFCS514T2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-XFBGA, WLCSP
- Packaging:
- Bulk
- 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-WLCSP (0.64x0.64)
NCP161BFCS514T2G FAQ
1.How can I place an order for NCP161BFCS514T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP161BFCS514T2G 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 NCP161BFCS514T2G reliable?
The price and inventory of NCP161BFCS514T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP161BFCS514T2G is usually 5 days.
3.What payment methods are accepted for NCP161BFCS514T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP161BFCS514T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP161BFCS514T2G?
NCP161BFCS514T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP161BFCS514T2G 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 NCP161BFCS514T2G?
For technical support, including NCP161BFCS514T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP161BFCS514T2G requirements.
6.How does Aetrix verify that NCP161BFCS514T2G is sourced from the original manufacturer or authorized distributors?
All NCP161BFCS514T2G 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 NCP161BFCS514T2G meets industry standards.
7.What is the process for return or replacement of NCP161BFCS514T2G?
All NCP161BFCS514T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP161BFCS514T2G, 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 NCP161BFCS514T2G part is unused and in its original packaging.
Return procedure for NCP161BFCS514T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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