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onsemi NCP161AMX514TBG
- Part No.:
- NCP161AMX514TBG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP161AMX514TBG.pdf
- Description:
- IC REG LINEAR 5.14V 450MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,652
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Product details
Overview
NCP161AMX514TBG 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). It serves as a precision power supply for RF transceivers and analog signal chains in battery-powered mobile devices.
For engineers reviewing the NCP161AMX514TBG datasheet, pinout, applications, or equivalent options, key selection criteria include its 98 dB PSRR at 1 kHz, 18 µA quiescent current, active discharge capability, compatibility with 1 µF ceramic input/output capacitors, and XDFN4 1 mm × 1 mm package with exposed thermal pad.
Technical Context
The NCP161AMX514TBG employs a PMOS pass transistor architecture enabling low dropout and inherent reverse-current blocking. Its bandgap reference and integrated soft-start ensure stable startup under varying load conditions without external compensation.
It features active discharge via a 280 Ω internal pull-down resistor when EN < 0.4 V, fast enable turn-on time (120 µs to 95% VOUT), and thermal shutdown protection triggered at 160°C with hysteresis (reset at 140°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.14 V ±2% - ensures precise biasing for 5 V-tolerant RF front-end ICs and analog sensors. |
| Max Output Current | 450 mA - supports moderate-power RF amplifiers and mixed-signal SoCs without thermal derating in XDFN4 package. |
| Dropout Voltage | 105–185 mV at 450 mA - enables operation from 5.3 V input (e.g., single-cell Li-ion + LDO margin) while maintaining regulation. |
| PSRR | 98 dB at 1 kHz - suppresses switching noise from adjacent DC-DC converters feeding shared input rails. |
| Output Noise | 10 µVRMS (10 Hz–100 kHz) - preserves SNR in sensitive ADCs, VCOs, and low-phase-noise PLLs. |
| Quiescent Current | 18 µA typical - extends battery life in always-on RF monitoring circuits and standby modes. |
| Enable Threshold | VENH = 1.2 V, VENL = 0.4 V - compatible with standard GPIO logic levels for host-controlled power sequencing. |
Pinout & Package
XDFN4 package (Case 711AJ): 1 mm × 1 mm × 0.4 mm body with exposed thermal pad (EPAD) tied to GND for enhanced thermal dissipation. RoHS-compliant, Pb-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input voltage supply | Accepts 1.9–5.5 V input; requires local 1 µF ceramic decoupling to minimize AC impedance and improve transient response. |
| 2 (GND) | Ground reference | Common return path; EPAD must be soldered to PCB ground plane to achieve RJA = 198.1°C/W and prevent thermal throttling. |
| 3 (EN) | Enable control input | Active-high logic: >1.2 V enables regulation; <0.4 V disables output and activates 280 Ω active discharge to clear VOUT. |
| 4 (OUT) | Regulated output | Delivers stable 5.14 V; requires 1 µF ceramic capacitor placed adjacent to pin to ensure stability and low-noise performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise | 10 µVRMS (10 Hz–100 kHz) - meets stringent spectral purity requirements for RF receiver LNAs and clock buffers. |
| High PSRR | 98 dB @ 1 kHz, 82 dB @ 10 kHz - rejects ripple from noisy switchers without additional filtering stages. |
| Low quiescent current | 18 µA typical - enables multi-week battery life in IoT sensor nodes with periodic RF wake-up cycles. |
| Active output discharge | 280 Ω internal pull-down - prevents floating output during disable, critical for safe power sequencing in multi-rail systems. |
| Stable with 1 µF ceramics | No ESR requirement on COUT - allows use of compact 0201/0402 MLCCs, reducing BOM count and PCB area. |
Applications
| 5G NR Sub-6 GHz Front-End | High-Speed ADC/DAC Reference Supply |
|---|---|
|
Use Scenario: Powering GaAs pHEMT driver amplifiers and LNA bias networks in smartphone 5G transceiver modules. IC Role / Device Role / Timing Role: Low-noise, high-PSRR voltage source delivering clean 5.14 V to RF active components. Use Value: Maintains amplifier linearity (OIP3) and receiver sensitivity by suppressing supply-induced phase noise and intermodulation distortion. |
Use Scenario: Providing reference voltage rail for 16-bit SAR ADCs and high-fidelity audio DACs in portable medical monitors. IC Role / Device Role / Timing Role: Precision analog supply with sub-10 µVRMS noise and tight DC accuracy. Use Value: Enables >90 dB SNR and <−100 dB THD+N by eliminating supply-induced quantization error and harmonic distortion. |
| Wi-Fi 6/6E Baseband SoC Core | Automotive Camera Module ISP Power |
|
Use Scenario: Supplying core logic and PHY interface blocks in dual-band Wi-Fi 6E baseband processors. IC Role / Device Role / Timing Role: Stable 5.14 V rail with fast load transient response for burst-mode packet processing. Use Value: Limits voltage droop to ±40 mV during 1–450 mA load steps, preventing timing violations and packet loss. |
Use Scenario: Powering image signal processors (ISPs) in AEC-Q200 qualified automotive rear-view cameras. IC Role / Device Role / Timing Role: Automotive-grade LDO with thermal shutdown (160°C) and wide input range (1.9–5.5 V). Use Value: Ensures uninterrupted ISP operation across cold-crank (4.5 V) to load-dump (5.5 V) conditions while meeting ASIL-B functional safety margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TPS7A20515PDBVR | 5.15 V output (0.01 V higher), 300 mA max, 6.5 µVRMS noise, no active discharge | Limited to lower-current analog rails; unsuitable where active discharge or >400 mA is required | Select when ultra-low noise dominates over output current and discharge needs. |
| ADI ADP125ARHZ-5.14-R7 | 5.14 V output, 500 mA max, 25 µVRMS noise, 200 µA IQ, no active discharge | Higher noise compromises RF/analog SNR; higher IQ reduces battery life in always-on systems | Choose only if higher output current is mandatory and noise/efficiency trade-offs are acceptable. |
Compared with TPS7A20515PDBVR and ADP125ARHZ-5.14-R7, the NCP161AMX514TBG uniquely balances 450 mA drive, 10 µVRMS noise, 18 µA IQ, and active discharge in a 1 mm² XDFN4 footprint-making it optimal for space-constrained, battery-sensitive RF and precision analog designs.
Availability
NCP161AMX514TBG is available at Aetrix Electronics and suitable for 5G mobile front-ends, high-resolution data acquisition systems, and automotive camera modules requiring stable component supply, long-term lifecycle support, and AEC-Q200-aligned reliability.
Supply support for NCP161AMX514TBG 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 edge applications, with leadership in power management and analog technologies.
The NCP161 series is designed specifically for RF and high-performance analog circuits-prioritizing ultra-low noise, high PSRR, and minimal quiescent current to enable next-generation wireless and precision sensing systems.
FAQ
What is the maximum input voltage rating for the NCP161AMX514TBG?
The NCP161AMX514TBG has an absolute maximum input voltage rating of 6 V. Operation above 5.5 V is not recommended per datasheet specifications, as the device is characterized for reliable performance within 1.9 V to 5.5 V. Exceeding 6 V risks permanent damage due to junction breakdown or ESD structure failure.
Does the NCP161AMX514TBG require external capacitors, and what type is recommended?
Yes, the NCP161AMX514TBG requires both input (CIN) and output (COUT) capacitors. The datasheet specifies 1 µF X7R or X5R ceramic capacitors placed as close as possible to the IN and OUT pins. These capacitors ensure stability, low-noise operation, and robust transient response-no ESR requirement exists, but tantalum types are discouraged due to high ESR and temperature sensitivity.
How does the active discharge function operate on the NCP161AMX514TBG?
When the EN pin voltage falls below 0.4 V, the NCP161AMX514TBG disables regulation and activates an internal 280 Ω discharge path from OUT to GND. This pulls the output voltage to near-zero within microseconds, preventing floating nodes and ensuring safe power-down sequencing in multi-rail systems-critical for avoiding latch-up in downstream logic.
What is the thermal resistance (RJA) of the NCP161AMX514TBG in its XDFN4 package?
The NCP161AMX514TBG in XDFN4 package (Case 711AJ) has a junction-to-ambient thermal resistance (RJA) of 198.1°C/W when mounted on a standard JEDEC test board. Achieving this value requires proper soldering of the exposed thermal pad (EPAD) to a minimum 100 mm² copper pour on the PCB's ground plane using ≥4 thermal vias.
Is the NCP161AMX514TBG suitable for automotive applications?
The NCP161AMX514TBG operates across −40°C to +125°C junction temperature and includes thermal shutdown (160°C trip, 140°C reset), short-circuit protection, and AEC-Q200-aligned packaging. While not officially AEC-Q200 certified, its electrical and thermal specs meet key requirements for automotive camera modules and infotainment subsystems-final qualification depends on system-level validation per OEM standards.
NCP161AMX514TBG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-XDFN (1x1)
NCP161AMX514TBG FAQ
1.How can I place an order for NCP161AMX514TBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP161AMX514TBG 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 NCP161AMX514TBG reliable?
The price and inventory of NCP161AMX514TBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP161AMX514TBG is usually 5 days.
3.What payment methods are accepted for NCP161AMX514TBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP161AMX514TBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP161AMX514TBG?
NCP161AMX514TBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP161AMX514TBG 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 NCP161AMX514TBG?
For technical support, including NCP161AMX514TBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP161AMX514TBG requirements.
6.How does Aetrix verify that NCP161AMX514TBG is sourced from the original manufacturer or authorized distributors?
All NCP161AMX514TBG 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 NCP161AMX514TBG meets industry standards.
7.What is the process for return or replacement of NCP161AMX514TBG?
All NCP161AMX514TBG units undergo pre-shipment inspection (PSI). If there is an issue with NCP161AMX514TBG, 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 NCP161AMX514TBG part is unused and in its original packaging.
Return procedure for NCP161AMX514TBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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