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onsemi NCP163AMX150TBG
- Part No.:
- NCP163AMX150TBG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP163AMX150TBG.pdf
- Description:
- IC REG LINEAR 1.5V 250MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,551
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Product details
Overview
NCP163AMX150TBG from onsemi is a 250 mA ultra-low-noise, high-PSRR LDO regulator with fixed 1.5 V output, designed for RF and analog circuits in space-constrained portable devices. It delivers ±2% output accuracy over load/temperature, 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 power for sensitive receivers and ADCs in smartphones and wireless LAN modules.
For engineers reviewing the NCP163AMX150TBG datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (XDFN4, 1 mm × 1 mm × 0.4 mm), validated enable-controlled active discharge, confirmed thermal shutdown (160°C trip), and real-world transient performance data for battery-powered RF subsystem design.
Technical Context
The NCP163AMX150TBG integrates a PMOS pass transistor with bandgap reference, soft-start circuitry, and thermal shutdown protection. Its architecture supports stable operation with only 1 µF ceramic input/output capacitors and enables precise voltage regulation under fast load transients (±40 mV deviation at 1 mA ↔ 200 mA step).
It features an enable pin with 1.2 V turn-on threshold and 0.4 V turn-off threshold, plus active discharge via a 280 Ω internal resistor when disabled - critical for sequencing in multi-rail systems. The XDFN4 package's 198.1 °C/W junction-to-air thermal resistance requires careful PCB copper area planning per Figure 51.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±2% over full load/temperature range - ensures stable bias for low-voltage RF amplifiers without external feedback. |
| Max Output Current | 250 mA continuous - sufficient to power multiple RF ICs or analog sensor front-ends from a single LDO. |
| Dropout Voltage | 80 mV at 250 mA (VOUT = 1.5 V) - allows operation from 1.58 V input, extending battery runtime in Li-ion/Li-poly systems. |
| Output Noise | 6.5 µVRMS (10 Hz–100 kHz) - minimizes phase noise degradation in local oscillators and SNR loss in precision ADCs. |
| PSRR | 92 dB at 1 kHz, 85 dB at 10 kHz - suppresses switching noise from adjacent DC-DC converters feeding RF signal chains. |
| Quiescent Current | 12 µA typical - preserves battery life during standby in always-on wireless sensors and IoT edge nodes. |
| Enable Threshold | VENH = 1.2 V, VENL = 0.4 V - compatible with standard GPIO logic levels for host-controlled power gating. |
Pinout & Package
XDFN4 package (Case 711AJ): 1 mm × 1 mm × 0.4 mm body, exposed pad for thermal enhancement, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | IN | Input voltage supply pin - accepts 2.2 V to 5.5 V; requires 1 µF ceramic capacitor placed adjacent to minimize trace inductance. |
| A2 | OUT | Regulated 1.5 V output - must be bypassed with 1 µF ceramic capacitor; low ESR improves transient response and PSRR. |
| B1 | EN | Chip enable control - logic-high (>1.2 V) enables regulation; logic-low (<0.4 V) disables output and activates 280 Ω discharge path. |
| B2 | GND | Common ground reference - connects to system ground plane; exposed pad (EPAD) must be soldered to GND for optimal thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise | 6.5 µVRMS output noise enables use in RF receiver LNA bias rails without degrading NF or phase noise. |
| High PSRR | 92 dB at 1 kHz suppresses ripple from upstream buck converters, reducing need for additional filtering stages. |
| Active discharge | 280 Ω internal discharge path pulls VOUT to GND within microseconds after disable - prevents floating outputs in sequenced power systems. |
| Stable with small caps | Guaranteed stability with ≥0.7 µF X7R/X5R ceramic output capacitors - supports 0201/0402 footprints for ultra-compact layouts. |
| Thermal protection | 160°C shutdown with 140°C hysteresis prevents permanent damage during sustained overload or poor heatsinking. |
Applications
| Smartphone RF Front-End | Wireless LAN Transceiver Bias |
|---|---|
|
Use Scenario: Powering 5 GHz Wi-Fi 6E PA driver and LNA stages in mobile handset designs. IC Role / Device Role / Timing Role: Provides ultra-clean 1.5 V bias to minimize AM-to-PM distortion and phase noise in RF power amplifiers. Use Value: 6.5 µVRMS noise and 92 dB PSRR prevent EVM degradation and maintain ACPR compliance under dynamic transmit conditions. |
Use Scenario: Supplying 1.5 V core voltage to IEEE 802.11ax transceiver ICs in compact access point modules. IC Role / Device Role / Timing Role: Delivers regulated low-noise power during rapid TX/RX state transitions with <40 mV load transient deviation. Use Value: 80 mV dropout and 12 µA quiescent current extend battery life while maintaining RF linearity across 0–250 mA load range. |
| Industrial IoT Sensor Node | Medical Wearable Analog Front-End |
|
Use Scenario: Powering BLE SoC RF section and precision ADC in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Supplies stable 1.5 V rail with active discharge for safe power-down sequencing between sensor sampling intervals. Use Value: ±2% accuracy and 1.2 V EN threshold ensure reliable wake-up from deep sleep using microcontroller GPIO without level-shifting. |
Use Scenario: Biasing low-noise instrumentation amplifiers and SAR ADCs in ECG/PPG wearable patches. IC Role / Device Role / Timing Role: Regulates 1.5 V analog supply with minimal added noise to preserve sub-µV signal integrity in biopotential measurement paths. Use Value: 6.5 µVRMS noise floor directly translates to >100 dB SNR headroom for 24-bit ADCs operating at 1 kSPS. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B152MR-G | 1.5 V fixed, 200 mA, 35 µVRMS noise, no active discharge, SOT-25 package (2.9 × 2.8 mm) | Lacks active discharge and higher noise limits use in RF-sensitive timing paths | Select when board space allows larger SOT-25 and discharge is handled externally. |
| Richtek RT9080AL-15PUF | 1.5 V fixed, 300 mA, 12 µVRMS noise, 100 mV dropout at 300 mA, WDFN-6L (1.2 × 1.2 mm) | Higher dropout and different pinout require layout revision; no EN-controlled discharge | Choose for higher current margin where 100 mV dropout is acceptable and footprint change is feasible. |
Compared with Torex XC6210B152MR-G and Richtek RT9080AL-15PUF, the NCP163AMX150TBG offers superior noise performance (6.5 vs. 35/12 µVRMS) and integrated active discharge - making it uniquely suited for RF and precision analog applications where both spectral purity and controlled power-down are mandatory.
Availability
NCP163AMX150TBG is available at Aetrix Electronics and suitable for smartphone RF front-end, wireless LAN transceiver bias, and medical wearable analog front-end applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP163AMX150TBG 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, power management, and sensing technologies.
The NCP163 product line targets ultra-low-noise, high-PSRR LDO regulation for RF and precision analog subsystems in battery-powered portable electronics - prioritizing noise suppression, transient response, and minimal quiescent current.
FAQ
What is the maximum input voltage rating for the NCP163AMX150TBG?
The NCP163AMX150TBG has an absolute maximum input voltage of 6 V. Operation is specified across 2.2 V to 5.5 V, with recommended derating above 5.5 V to ensure reliability. Exceeding 6 V risks permanent damage per Absolute Maximum Ratings table on page 2 of the datasheet.
Does the NCP163AMX150TBG include thermal shutdown protection?
Yes, the NCP163AMX150TBG incorporates thermal shutdown with a typical trip temperature of 160°C and hysteresis reset at 140°C. This feature disables the regulator during overheating events and automatically recovers once junction temperature falls below the reset threshold - protecting against catastrophic failure.
Can the NCP163AMX150TBG operate stably with a 0.7 µF output capacitor?
Yes, the NCP163AMX150TBG is designed to remain stable with a minimum effective output capacitance of 0.7 µF, accounting for DC bias, temperature, and package-related capacitance loss - especially relevant for small-case 0201 X7R ceramics used in space-constrained designs.
What is the purpose of the exposed pad (EPAD) on the NCP163AMX150TBG XDFN4 package?
The EPAD on the NCP163AMX150TBG must be soldered to the PCB ground plane to reduce thermal resistance (198.1 °C/W junction-to-air) and improve power dissipation. Leaving it unconnected degrades thermal performance and may trigger premature thermal shutdown under load.
Is active discharge available on the NCP163AMX150TBG, and how does it function?
Yes, the NCP163AMX150TBG includes active discharge. When the EN pin is pulled below 0.4 V, the internal 280 Ω discharge resistor connects OUT to GND, rapidly discharging the output capacitor. This prevents floating voltages and ensures safe power-down sequencing in multi-rail systems.
NCP163AMX150TBG 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):
- 1.5V
- 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)
NCP163AMX150TBG FAQ
1.How can I place an order for NCP163AMX150TBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP163AMX150TBG 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 NCP163AMX150TBG reliable?
The price and inventory of NCP163AMX150TBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP163AMX150TBG is usually 5 days.
3.What payment methods are accepted for NCP163AMX150TBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP163AMX150TBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP163AMX150TBG?
NCP163AMX150TBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP163AMX150TBG 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 NCP163AMX150TBG?
For technical support, including NCP163AMX150TBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP163AMX150TBG requirements.
6.How does Aetrix verify that NCP163AMX150TBG is sourced from the original manufacturer or authorized distributors?
All NCP163AMX150TBG 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 NCP163AMX150TBG meets industry standards.
7.What is the process for return or replacement of NCP163AMX150TBG?
All NCP163AMX150TBG units undergo pre-shipment inspection (PSI). If there is an issue with NCP163AMX150TBG, 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 NCP163AMX150TBG part is unused and in its original packaging.
Return procedure for NCP163AMX150TBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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