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onsemi NCP160AMX450TBG
- Part No.:
- NCP160AMX450TBG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP160AMX450TBG.pdf
- Description:
- IC REG LINEAR 4.5V 250MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,236
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Product details
Overview
NCP160AMX450TBG from onsemi is a 250 mA ultra-low-noise, high-PSRR LDO regulator with fixed 4.5 V output, designed for RF and analog circuits in space-constrained portable devices. It delivers 80 mV dropout at full load, 10 µVRMS output noise (10 Hz–100 kHz), and 98 dB PSRR at 1 kHz - enabling clean power for sensitive receivers and ADCs in smartphones and wireless LAN modules.
For engineers reviewing the NCP160AMX450TBG datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (XDFN-4, 1 mm × 1 mm), validated thermal performance (RJA = 198.1 °C/W), EN-controlled active discharge (280 Ω), and real-world transient response data for battery-powered RF subsystem design.
Technical Context
The NCP160AMX450TBG uses a PMOS pass transistor architecture to achieve low dropout and reverse-current immunity. Its bandgap reference and integrated soft-start ensure stable regulation across −40°C to +125°C junction temperature, with thermal shutdown (160°C) and current limiting (700 mA typ.) for robust operation under fault conditions.
It operates from 1.9 V to 5.5 V input, supports 1 µF ceramic input/output capacitors, and features an enable pin with 1.2 V turn-on threshold and 0.4 V turn-off threshold - enabling precise system-level power sequencing in multi-rail applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.5 V ±2% over load/temperature - ensures stable bias for 4.5 V analog sensors or RF front-end ICs without external feedback. |
| Max Output Current | 250 mA continuous - sufficient to power multiple low-power RF ICs (e.g., Wi-Fi transceivers, GPS receivers) from a single rail. |
| Dropout Voltage | 65 mV typ. at 250 mA (VOUT = 4.5 V) - enables operation down to 4.565 V input, critical for Li-ion battery systems under discharge. |
| PSRR | 98 dB typ. at 1 kHz - suppresses switching noise from adjacent DC-DC converters, preserving SNR in RF receivers. |
| Output Noise | 10 µVRMS (10 Hz–100 kHz) - meets stringent noise requirements of high-resolution ADCs and low-phase-noise VCOs. |
| Quiescent Current | 18 µA typ. - extends battery life in always-on sensor nodes and standby modes of mobile devices. |
| Enable Threshold | VENH = 1.2 V, VENL = 0.4 V - compatible with standard GPIO logic levels for microcontroller-driven power management. |
Pinout & Package
XDFN-4 package (1 mm × 1 mm × 0.4 mm, Case 711AJ), Pb-free and RoHS compliant. Exposed pad (EPAD) must be connected to GND for optimal thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Input voltage supply | Accepts 1.9–5.5 V input; requires 1 µF ceramic capacitor placed adjacent to minimize trace inductance. |
| OUT (Pin 2) | Regulated output | Delivers stable 4.5 V; bypassed with 1 µF ceramic capacitor; supports ≤2 Ω ESR for stability. |
| GND (Pin 3) | Ground reference | Common return path; EPAD tied to GND improves thermal resistance by ~30% vs. no EPAD connection. |
| EN (Pin 4) | Enable control | Active-high logic: ≥1.2 V enables regulation; ≤0.4 V disables output and activates 280 Ω active discharge. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise | 10 µVRMS (10 Hz–100 kHz) - eliminates need for post-LDO LC filtering in RF signal chains. |
| High PSRR | 98 dB at 1 kHz - rejects ripple from shared buck converter outputs without additional decoupling stages. |
| Active output discharge | 280 Ω internal resistor when disabled - ensures rapid VOUT decay (<1 ms for 1 µF load), preventing latch-up in downstream logic. |
| Low quiescent current | 18 µA typ. - enables >1-year battery life in IoT sensor nodes operating at 10 µA average system current. |
| Stable with small ceramics | Validated with 1 µF X7R/X5R MLCCs - allows use of 0201/0402 footprints, reducing PCB area by >40% vs. larger-capacitor LDOs. |
Applications
| Smartphone RF Front-End | Wi-Fi 6/6E Transceiver Bias |
|---|---|
Use Scenario: Powering RF power amplifiers and low-noise amplifiers in LTE/5G handset designs where supply noise directly impacts EVM and receiver sensitivity. IC Role / Device Role / Timing Role: Primary low-noise bias rail for RFICs requiring <15 µVRMS noise and fast load transient response. Use Value: 98 dB PSRR at 1 kHz and 40 mV load transient recovery suppress switching artifacts from PMIC DC-DC rails, improving ACLR by ≥3 dB. |
Use Scenario: Supplying 4.5 V to Wi-Fi 6E transceivers (e.g., QCA98xx, BCM4375) during high-throughput OFDMA transmission. IC Role / Device Role / Timing Role: Dedicated LDO for analog PHY blocks, isolated from digital core supply noise. Use Value: 10 µVRMS noise and 250 mA capability maintain EVM <−35 dB under 802.11ax 1024-QAM modulation. |
| Portable Medical Sensor Hub | Industrial Wireless Node |
Use Scenario: Powering precision analog front-ends (e.g., ADS129x, AD7768) in handheld ECG/SpO₂ monitors powered by single-cell Li-ion. IC Role / Device Role / Timing Role: Clean 4.5 V reference rail for delta-sigma ADCs and instrumentation amplifiers. Use Value: ±2% output accuracy and 0.001 %/mA load regulation ensure <0.05% gain error across battery discharge cycle (4.2 V → 3.3 V). |
Use Scenario: Regulating power for LoRaWAN or NB-IoT modems (e.g., SX126x, BGM220) in battery-operated industrial gateways. IC Role / Device Role / Timing Role: Standby-mode LDO enabling <20 µA system sleep current while maintaining fast wake-up capability. Use Value: 18 µA IQ and 0.1 µA shutdown current extend 2000 mAh battery life to >10 years in 1-minute transmit-interval deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B452MR-G | 4.5 V fixed, 200 mA, 25 µVRMS noise, no active discharge | Lacks EN-controlled discharge; higher noise limits use in RF-sensitive paths | Select when cost sensitivity outweighs RF noise requirements and active discharge is unnecessary. |
| Richtek RT9080-45GB | 4.5 V fixed, 300 mA, 15 µVRMS noise, 120 mV dropout at 250 mA | Higher dropout reduces usable input range in low-VIN battery scenarios | Prefer when higher output current is required and system input stays ≥4.62 V. |
Compared with XC6210B452MR-G and RT9080-45GB, the NCP160AMX450TBG uniquely combines 10 µVRMS noise, 65 mV dropout, and active discharge in a 1 mm × 1 mm XDFN package - making it optimal for compact, battery-fed RF/analog systems demanding lowest noise and fastest output decay.
Availability
NCP160AMX450TBG is available at Aetrix Electronics and suitable for smartphone RF front-ends, Wi-Fi 6E transceiver bias, and portable medical sensor hubs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for NCP160AMX450TBG 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 (Nasdaq: ON) is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP160AMX450TBG belongs to onsemi's ultra-low-noise LDO family, engineered specifically for RF and high-precision analog circuits where power integrity directly impacts signal fidelity and system-level performance.
FAQ
What is the maximum input voltage rating for the NCP160AMX450TBG?
The NCP160AMX450TBG has an absolute maximum input voltage rating of 6 V. Operation above 5.5 V is not recommended per datasheet specifications, and sustained exposure beyond 6 V may cause permanent damage. The device is optimized for 1.9 V to 5.5 V input range, ensuring reliable regulation and thermal performance across its full operating envelope.
Does the NCP160AMX450TBG require an external pull-up resistor on the EN pin?
No, the NCP160AMX450TBG does not require an external pull-up resistor on the EN pin. It features an internal pull-down current source (200 nA typ.) that guarantees disable state when EN is left floating. If enable functionality is unused, EN may be tied directly to IN to maintain permanent operation - eliminating external components and board space.
Can the NCP160AMX450TBG be used with 0201-size 1 µF ceramic capacitors?
Yes, the NCP160AMX450TBG is explicitly characterized and stable with 1 µF X7R/X5R ceramic capacitors, including 0201 case sizes. The datasheet confirms stability down to 0.7 µF effective capacitance - accommodating DC-bias derating typical of small-footprint MLCCs - making it ideal for ultra-compact layouts in mobile and wearable designs.
What is the thermal resistance (RJA) of the NCP160AMX450TBG in its XDFN-4 package?
The NCP160AMX450TBG in XDFN-4 package (Case 711AJ) has a measured junction-to-ambient thermal resistance (RJA) of 198.1 °C/W under JEDEC-standard board conditions (1 oz copper). With 2 oz copper and optimized thermal pad layout, RJA can be reduced to ~170 °C/W - enabling >200 mW continuous power dissipation at 25°C ambient.
Is active output discharge present in the NCP160AMX450TBG, and how does it function?
Yes, the NCP160AMX450TBG includes active output discharge. When EN is pulled ≤0.4 V, an internal 280 Ω resistor connects OUT to GND, discharging a 1 µF output capacitor in <1 ms. This prevents residual voltage from interfering with downstream logic states during power sequencing - a key requirement in multi-rail portable systems using the NCP160AMX450TBG.
NCP160AMX450TBG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- 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):
- 4.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.12V @ 250mA
- Current - Output:
- 250mA
- 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-XDFN (1x1)
NCP160AMX450TBG FAQ
1.How can I place an order for NCP160AMX450TBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP160AMX450TBG 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 NCP160AMX450TBG reliable?
The price and inventory of NCP160AMX450TBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP160AMX450TBG is usually 5 days.
3.What payment methods are accepted for NCP160AMX450TBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP160AMX450TBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP160AMX450TBG?
NCP160AMX450TBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP160AMX450TBG 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 NCP160AMX450TBG?
For technical support, including NCP160AMX450TBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP160AMX450TBG requirements.
6.How does Aetrix verify that NCP160AMX450TBG is sourced from the original manufacturer or authorized distributors?
All NCP160AMX450TBG 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 NCP160AMX450TBG meets industry standards.
7.What is the process for return or replacement of NCP160AMX450TBG?
All NCP160AMX450TBG units undergo pre-shipment inspection (PSI). If there is an issue with NCP160AMX450TBG, 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 NCP160AMX450TBG part is unused and in its original packaging.
Return procedure for NCP160AMX450TBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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