Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

onsemi NCP163AFCT290T2G

Name: NCP163AFCT290T2G
Brand: onsemi
SKU: NCP163AFCT290T2G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: NCP163AFCT290T2G

Manufacturer:: onsemi

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 4-XFBGA, WLCSP

Datasheet:: NCP163AFCT290T2G.pdf

Description:: IC REG LINEAR 2.9V 250MA 4WLCSP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:105,000

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

NCP163AFCT290T2G from onsemi is a 250 mA ultra-low-noise, high-PSRR LDO regulator with fixed 2.9 V output, 80 mV dropout at full load, 6.5 µV_RMS output noise, and 92 dB PSRR at 1 kHz - engineered for RF power amplifiers and analog sensor signal chains in smartphones and wireless LAN modules.

For engineers reviewing the NCP163AFCT290T2G datasheet, pinout, applications, or equivalent options, key selection criteria include its WLCSP4 package footprint (0.64 mm × 0.64 mm), active discharge capability, ±2% output accuracy over load/temperature, and compatibility with 1 µF ceramic input/output capacitors without external compensation.

Technical Context

The NCP163AFCT290T2G integrates a PMOS pass transistor with thermal shutdown (160°C trip), current limiting (700 mA typ.), and internal soft-start. Its enable logic supports 0.4 V low-threshold disable and 1.2 V high-threshold enable, activating an integrated 280 Ω active discharge path when disabled.

This variant belongs to the "A" option family with normal slew-rate turn-on (120 µs to 95% V_OUT), operates across 2.2–5.5 V input range, and maintains stability with 0.7 µF minimum effective C_OUT - optimized for compact, battery-powered systems requiring rail-to-rail regulation and minimal voltage ripple.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.9 V ±2% over load/temperature - ensures stable biasing for 2.8–3.0 V analog rails without external feedback.
Max Output Current	250 mA continuous - sufficient for powering RF transceivers, ADC reference buffers, or camera ISP cores.
Dropout Voltage	80 mV at 250 mA (V_OUT = 3.3 V) - enables operation from single-cell Li-ion (3.0 V min) with >2.9 V regulated output.
Output Noise	6.5 µV_RMS (10 Hz–100 kHz) - preserves SNR in precision analog front-ends and RF receiver LNAs.
PSRR	92 dB at 1 kHz, 85 dB at 10 kHz - suppresses switching noise from adjacent DC-DC converters feeding shared input rails.
Quiescent Current	12 µA typ. - extends battery life in always-on sensor nodes and standby modes.
Enable Threshold	V_ENH = 1.2 V, V_ENL = 0.4 V - compatible with 1.8 V GPIOs and supports direct tie-to-IN if enable not required.

Pinout & Package

Package: WLCSP4 (CASE 567JZ), 0.64 mm × 0.64 mm × 0.33 mm, Pb-free, bottom-side exposed pad tied to GND for thermal relief.

Pin/Terminal	Circuit Role	Design Meaning
IN	Input voltage supply	Accepts 2.2–5.5 V; requires local 1 µF X7R/X5R ceramic capacitor for transient suppression.
OUT	Regulated output	Delivers 2.9 V ±2%; bypassed with 1 µF ceramic capacitor; supports active discharge via EN low.
EN	Chip enable control	Logic-high (>1.2 V) enables regulation; logic-low (<0.4 V) disables output and activates 280 Ω discharge path.
GND	Ground reference	Common return for IN, OUT, and EN; exposed pad must be soldered to PCB ground plane for thermal performance.

Key Features

Feature	Design Value
Ultra-low noise	6.5 µV_RMS output noise enables clean power for RF receivers and high-resolution ADCs without added filtering.
High PSRR	92 dB at 1 kHz suppresses ripple from noisy switchers, reducing need for additional LC filtering stages.
Active discharge	280 Ω internal discharge path pulls V_OUT to GND within microseconds of EN deassertion - prevents back-powering or latch-up in multi-rail systems.
Stable with 1 µF ceramics	No ESR requirement or external compensation needed - simplifies layout and reduces BOM count versus legacy LDOs.
Thermal protection	160°C junction shutdown with 20°C hysteresis prevents damage during sustained overload or poor heatsinking.

Applications

Smartphone RF Front-End	Wireless LAN Transceiver Bias
Use Scenario: Powering 2.9 V PA driver stage and LNA in LTE/5G handset front-end modules. IC Role / Device Role / Timing Role: Low-noise, high-PSRR voltage source delivering clean 2.9 V rail isolated from noisy baseband and PMIC domains. Use Value: Maintains EVM <−45 dB under 20 MHz LTE modulation by suppressing 100 kHz–1 MHz switching artifacts from adjacent buck converters.	Use Scenario: Supplying 2.9 V bias to WLAN 802.11ac/ax transceiver ICs in tablet and hotspot designs. IC Role / Device Role / Timing Role: Regulated power source enabling fast enable/disable sequencing synchronized with MAC-layer sleep/wake cycles. Use Value: Active discharge ensures V_OUT collapses in <50 µs upon disable, meeting IEEE 802.11 power-down timing requirements.
Industrial Camera Sensor Core	Medical Wearable Analog Signal Chain
Use Scenario: Providing 2.9 V supply to CMOS image sensor analog core and column ADC in compact surveillance cameras. IC Role / Device Role / Timing Role: Ultra-low-noise LDO decoupling digital switching noise from sensitive pixel readout circuitry. Use Value: 6.5 µV_RMS noise contributes <0.05 LSB error in 14-bit ADC conversion, preserving dynamic range.	Use Scenario: Powering 2.9 V op-amp and instrumentation amplifier stages in ECG/PPG wearable sensors. IC Role / Device Role / Timing Role: Precision voltage source maintaining stable offset and gain in millivolt-level biopotential amplification. Use Value: ±2% output accuracy over −40°C to +125°C ensures consistent calibration across body-worn temperature gradients.

Smartphone RF Front-End

Wireless LAN Transceiver Bias

Use Scenario: Powering 2.9 V PA driver stage and LNA in LTE/5G handset front-end modules.

IC Role / Device Role / Timing Role: Low-noise, high-PSRR voltage source delivering clean 2.9 V rail isolated from noisy baseband and PMIC domains.

Use Value: Maintains EVM <−45 dB under 20 MHz LTE modulation by suppressing 100 kHz–1 MHz switching artifacts from adjacent buck converters.

Use Scenario: Supplying 2.9 V bias to WLAN 802.11ac/ax transceiver ICs in tablet and hotspot designs.

IC Role / Device Role / Timing Role: Regulated power source enabling fast enable/disable sequencing synchronized with MAC-layer sleep/wake cycles.

Use Value: Active discharge ensures V_OUT collapses in <50 µs upon disable, meeting IEEE 802.11 power-down timing requirements.

Industrial Camera Sensor Core

Medical Wearable Analog Signal Chain

Use Scenario: Providing 2.9 V supply to CMOS image sensor analog core and column ADC in compact surveillance cameras.

IC Role / Device Role / Timing Role: Ultra-low-noise LDO decoupling digital switching noise from sensitive pixel readout circuitry.

Use Value: 6.5 µV_RMS noise contributes <0.05 LSB error in 14-bit ADC conversion, preserving dynamic range.

Use Scenario: Powering 2.9 V op-amp and instrumentation amplifier stages in ECG/PPG wearable sensors.

IC Role / Device Role / Timing Role: Precision voltage source maintaining stable offset and gain in millivolt-level biopotential amplification.

Use Value: ±2% output accuracy over −40°C to +125°C ensures consistent calibration across body-worn temperature gradients.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Torex XC6210B292MR-G	250 mA, 2.9 V fixed, 60 mV dropout, no active discharge, 20 µA I_Q	Lacks active discharge and has higher quiescent current - unsuitable for fast wake/sleep cycling.	Select when board space allows larger SOT-25 package and active discharge is not required.
Richtek RT9080A-29GB	300 mA, 2.9 V fixed, 120 mV dropout, 15 µA I_Q, no active discharge	Higher dropout limits use with ≤3.0 V inputs; no discharge path increases risk of backfeed in multi-supply systems.	Choose only if higher output current margin is critical and thermal headroom permits 120 mV dropout penalty.

Compared with XC6210B292MR-G and RT9080A-29GB, the NCP163AFCT290T2G delivers superior noise/PSRR performance in the same WLCSP4 footprint while enabling deterministic power-down behavior via active discharge - critical for battery-constrained, multi-rail portable electronics.

Availability

NCP163AFCT290T2G is available at Aetrix Electronics and suitable for smartphone RF front-ends, wireless LAN transceiver biasing, and industrial camera sensor cores requiring stable component supply with guaranteed long-term manufacturability.

Supply support for NCP163AFCT290T2G 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 IoT applications - with leadership in power management, imaging, and signal processing.

The NCP163AFCT290T2G belongs to onsemi's ultra-low-noise LDO product line, designed specifically for noise-sensitive RF and analog circuits in battery-powered mobile and edge devices where PSRR, dropout, and footprint are critical.

FAQ

What is the output voltage tolerance of the NCP163AFCT290T2G over temperature and load?

The NCP163AFCT290T2G maintains ±2% output voltage accuracy across −40°C to +125°C junction temperature and 0–250 mA load current, verified per onsemi's Electrical Characteristics table for WLCSP4 packages. This ensures reliable operation in handheld devices experiencing wide ambient and self-heating variations.

Does the NCP163AFCT290T2G require external capacitors, and what type is recommended?

Yes - the NCP163AFCT290T2G requires 1 µF X7R or X5R ceramic capacitors on both IN and OUT pins, placed as close as possible to the device. These minimize ESL/ESR, ensure stability down to 0.7 µF effective capacitance, and eliminate need for series resistors or feedforward capacitors.

How does the active discharge function work in the NCP163AFCT290T2G?

When the EN pin voltage drops below 0.4 V, the NCP163AFCT290T2G 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 back-powering of upstream circuitry or unintended wake events in multi-rail systems.

What is the maximum input voltage rating for the NCP163AFCT290T2G?

The absolute maximum input voltage for the NCP163AFCT290T2G is 6 V, but the recommended operating range is 2.2 V to 5.5 V. Exceeding 5.5 V risks violating safe operating area limits and may trigger thermal shutdown or reduce long-term reliability even if within absolute max ratings.

Is the NCP163AFCT290T2G compatible with 0201-size ceramic capacitors?

Yes - the NCP163AFCT290T2G is explicitly characterized to remain stable with 0201 MLCCs (1 µF, X7R/X5R), provided their effective capacitance remains ≥0.7 µF under DC bias and temperature. Layout must minimize trace inductance, and ground vias should connect directly to the exposed pad.

NCP163AFCT290T2G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: 4-XFBGA, WLCSP

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):: 2.9V

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-WLCSP (0.64x0.64)

NCP163AFCT290T2G FAQ

1.How can I place an order for NCP163AFCT290T2G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCP163AFCT290T2G 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 NCP163AFCT290T2G reliable?

The price and inventory of NCP163AFCT290T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP163AFCT290T2G is usually 5 days.

3.What payment methods are accepted for NCP163AFCT290T2G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP163AFCT290T2G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCP163AFCT290T2G?

NCP163AFCT290T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCP163AFCT290T2G 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 NCP163AFCT290T2G?

For technical support, including NCP163AFCT290T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP163AFCT290T2G requirements.

6.How does Aetrix verify that NCP163AFCT290T2G is sourced from the original manufacturer or authorized distributors?

All NCP163AFCT290T2G 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 NCP163AFCT290T2G meets industry standards.

7.What is the process for return or replacement of NCP163AFCT290T2G?

All NCP163AFCT290T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP163AFCT290T2G, 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 NCP163AFCT290T2G part is unused and in its original packaging.

Return procedure for NCP163AFCT290T2G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…