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onsemi NCP163AMX260TBG
- Part No.:
- NCP163AMX260TBG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP163AMX260TBG.pdf
- Description:
- IC REG LINEAR 2.6V 250MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,776
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Product details
Overview
NCP163AMX260TBG from onsemi is a 250 mA ultra-low-noise, high-PSRR LDO regulator with fixed 2.6 V output, designed for RF and analog circuit power supply in space-constrained portable devices. It delivers 80 mV dropout at 250 mA (XDFN4 package), 6.5 µVRMS output noise (10 Hz–100 kHz), and 92 dB PSRR at 1 kHz - enabling clean biasing of sensitive receivers, ADCs, and PLLs in smartphones and wireless LAN modules.
For engineers reviewing the NCP163AMX260TBG datasheet, pinout, applications, or equivalent options, key selection criteria include its 2.2–5.5 V input range, ±2% output accuracy over load/temperature, 12 µA quiescent current, compatibility with 1 µF ceramic capacitors, and XDFN4 1 mm × 1 mm × 0.4 mm package with thermal pad.
Technical Context
The NCP163AMX260TBG integrates a PMOS pass transistor with internal soft-start, thermal shutdown (160°C trip), and active discharge (280 Ω). Its bandgap reference and MOSFET driver enable stable regulation under fast load transients (±40 mV deviation at 1–200 mA step) and line transients (±1 mV at 30 µs slew).
It operates across −40°C to +125°C junction temperature, supports enable control (VENH = 1.2 V, VENL = 0.4 V), and maintains stability with low-ESR ceramic output capacitors ≤2 Ω - no tantalum required. The XDFN4 package features an exposed EPAD tied to GND for enhanced thermal dissipation (RJA = 198.1°C/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.6 V ±2% over load/temperature - ensures precise biasing for 2.5 V–2.7 V logic or RF ICs without external feedback. |
| Max Output Current | 250 mA continuous - sufficient for powering RF transceivers, audio codecs, or sensor signal chains in compact designs. |
| Dropout Voltage | 80 mV at 250 mA (VOUT = 2.6 V) - enables operation from 2.68 V input, critical for single-cell Li-ion or Li-poly battery systems. |
| Output Noise | 6.5 µVRMS (10 Hz–100 kHz) - minimizes phase noise in local oscillators and quantization noise in precision ADCs. |
| PSRR | 92 dB at 1 kHz, 85 dB at 10 kHz - suppresses switching noise from DC-DC converters feeding the LDO input. |
| Quiescent Current | 12 µA typical - extends battery life in always-on sensor nodes or standby modes of mobile devices. |
| Enable Threshold | VENH = 1.2 V, VENL = 0.4 V - compatible with 1.8 V GPIOs and provides robust noise margin against digital switching. |
Pinout & Package
XDFN4 package (Case 711AJ): 1 mm × 1 mm × 0.4 mm body with exposed thermal pad (EPAD); RoHS-compliant, halogen-free, Pb-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | IN | Input voltage supply (2.2–5.5 V); requires 1 µF ceramic capacitor placed adjacent to pin for stability and transient response. |
| A2 | OUT | Regulated 2.6 V output; connects directly to load and 1 µF ceramic bypass capacitor; low-impedance path essential for RF noise suppression. |
| B1 | EN | Active-high enable input; <0.4 V disables regulator and activates 280 Ω active discharge; >1.2 V enables regulation and disables discharge. |
| B2 | GND | Common ground reference; must be connected to low-impedance PCB ground plane; EPAD tied to GND improves thermal performance. |
| EPAD | Thermal Pad | Exposed copper pad on bottom; electrically and thermally connected to GND; mandatory for achieving RJA = 198.1°C/W rating. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise regulation | 6.5 µVRMS output noise enables use in RF front-ends and high-resolution ADC/DAC reference supplies without added filtering. |
| High PSRR across frequency | 92 dB at 1 kHz and 60 dB at 100 kHz suppresses ripple from upstream buck converters, reducing need for additional LC stages. |
| Stable with minimal capacitance | Guaranteed stability with 1 µF X7R/X5R ceramic output capacitor - eliminates need for larger, board-space-consuming bulk caps. |
| Active output discharge | 280 Ω internal discharge path pulls VOUT to GND when disabled - prevents floating outputs and ensures controlled power-down sequencing. |
| Robust protection suite | Integrated current limit (700 mA typ), short-circuit protection (690 mA typ), and thermal shutdown (160°C trip) prevent damage during fault conditions. |
Applications
| Smartphone RF Front-End | Wireless LAN Baseband |
|---|---|
|
Use Scenario: Powering 2.6 V LNA and mixer stages in LTE/5G sub-6 GHz transceivers. IC Role / Device Role / Timing Role: Low-noise local bias supply ensuring minimal phase noise contribution to receiver sensitivity. Use Value: 6.5 µVRMS noise and 92 dB PSRR maintain EVM <2.5% at 256-QAM, meeting 3GPP TRP requirements. |
Use Scenario: Supplying 2.6 V core voltage to IEEE 802.11ac/ax baseband processors during burst transmission. IC Role / Device Role / Timing Role: High-transient-response LDO delivering stable voltage during 10–200 mA load steps within 5 µs. Use Value: ±40 mV load transient deviation preserves digital logic margins and prevents packet errors in high-throughput Wi-Fi links. |
| Industrial IoT Sensor Node | Medical Wearable ADC Bias |
|
Use Scenario: Regulating power for ultra-low-power BLE SoC and MEMS accelerometer in battery-operated edge node. IC Role / Device Role / Timing Role: Primary system LDO providing 2.6 V rail with 12 µA IQ to maximize multi-year battery life. Use Value: 12 µA quiescent current extends CR2032 battery life to >3 years in sleep mode (1 µA average system current). |
Use Scenario: Supplying precision 2.6 V reference voltage to 24-bit delta-sigma ADC in ECG/PPG monitoring patch. IC Role / Device Role / Timing Role: Ultra-low-noise analog supply isolating ADC from digital switching noise on shared PCB. Use Value: 6.5 µVRMS noise contributes <0.005 LSB error in 24-bit conversion, preserving clinical-grade signal fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B262MR-G | 250 mA, 2.6 V fixed, 25 µA IQ, 120 mV dropout at 250 mA, no active discharge | Lacks active discharge and has higher noise (15 µVRMS) - unsuitable for RF or fast power-down sequencing | Select when lowest BOM cost is prioritized over noise/sequencing; verify thermal design due to higher RJA. |
| Richtek RT9080-26GJ5 | 300 mA, 2.6 V fixed, 20 µA IQ, 110 mV dropout, 12 µVRMS noise, no thermal shutdown | Higher noise and missing thermal protection - limits use in thermally constrained or safety-critical medical designs | Prefer for higher-current loads (>250 mA) where thermal margin is assured; avoid in sealed enclosures without airflow. |
Compared with Torex XC6210B262MR-G and Richtek RT9080-26GJ5, the NCP163AMX260TBG uniquely combines ultra-low noise (6.5 µVRMS), active discharge, thermal shutdown, and 12 µA quiescent current in a 1 mm² XDFN4 package - making it optimal for RF-sensitive, battery-constrained, and safety-aware applications.
Availability
NCP163AMX260TBG is available at Aetrix Electronics and suitable for smartphone RF front-end, wireless LAN baseband, and industrial IoT sensor node designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP163AMX260TBG 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, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP163AMX260TBG belongs to onsemi's ultra-low-noise LDO family, engineered specifically for powering RF transceivers, high-precision analog circuits, and battery-powered portable electronics demanding minimal voltage ripple and thermal footprint.
FAQ
What is the output voltage tolerance of the NCP163AMX260TBG over temperature and load?
The NCP163AMX260TBG maintains ±2% output voltage accuracy across −40°C to +125°C junction temperature and 0–250 mA load current, as specified in the Electrical Characteristics table. This tight tolerance ensures reliable operation of 2.6 V logic interfaces and analog components without external trimming or calibration.
Does the NCP163AMX260TBG require an external pull-up resistor on the EN pin?
No, the NCP163AMX260TBG includes an internal 200 nA pull-down current source on the EN pin, ensuring default disable state when left unconnected. If always-on operation is needed, tie EN directly to IN; no external pull-up is required or recommended.
Can the NCP163AMX260TBG operate with input voltages below 2.6 V?
No - the NCP163AMX260TBG requires minimum 2.2 V input but cannot regulate at 2.6 V output if VIN falls below VOUT + VDO. With 80 mV dropout, it needs ≥2.68 V input to sustain 2.6 V output at 250 mA. Below that, output drops linearly with input.
Is the exposed pad (EPAD) on the NCP163AMX260TBG electrically connected?
Yes - the EPAD is internally connected to GND and must be soldered to a PCB ground plane. It serves dual functions: thermal dissipation (reducing RJA to 198.1°C/W) and electrical grounding. Leaving it unconnected degrades thermal performance and may cause instability.
What is the maximum allowable ESR for the output capacitor used with the NCP163AMX260TBG?
The NCP163AMX260TBG specifies a maximum output capacitor ESR of 2 Ω. Exceeding this value risks instability or degraded transient response. Ceramic capacitors (X7R/X5R) are recommended due to their inherently low ESR; tantalum capacitors are discouraged because their ESR rises sharply at low temperatures.
NCP163AMX260TBG 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):
- 2.6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 250mA
- Current - Quiescent (Iq):
- 20 µA
- Current - Supply (Max):
- -
- PSRR:
- 91dB ~ 60dB (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)
NCP163AMX260TBG FAQ
1.How can I place an order for NCP163AMX260TBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP163AMX260TBG 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 NCP163AMX260TBG reliable?
The price and inventory of NCP163AMX260TBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP163AMX260TBG is usually 5 days.
3.What payment methods are accepted for NCP163AMX260TBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP163AMX260TBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP163AMX260TBG?
NCP163AMX260TBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP163AMX260TBG 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 NCP163AMX260TBG?
For technical support, including NCP163AMX260TBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP163AMX260TBG requirements.
6.How does Aetrix verify that NCP163AMX260TBG is sourced from the original manufacturer or authorized distributors?
All NCP163AMX260TBG 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 NCP163AMX260TBG meets industry standards.
7.What is the process for return or replacement of NCP163AMX260TBG?
All NCP163AMX260TBG units undergo pre-shipment inspection (PSI). If there is an issue with NCP163AMX260TBG, 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 NCP163AMX260TBG part is unused and in its original packaging.
Return procedure for NCP163AMX260TBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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