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

onsemi NCP163AFCS285T2G

Name: NCP163AFCS285T2G
Brand: onsemi
SKU: NCP163AFCS285T2G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCP163AFCS285T2G

Manufacturer:: onsemi

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

Package:: 4-XFBGA, WLCSP

Datasheet:: NCP163AFCS285T2G.pdf

Description:: IC REG LINEAR 2.85V 250MA 4WLCSP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NCP163AFCS285T2G from onsemi is a 250 mA ultra-low-noise, high-PSRR LDO regulator with fixed 2.85 V output, designed for RF and analog circuits in space-constrained portable devices. It delivers 6.5 µV_RMS noise, 92 dB PSRR at 1 kHz, 80 mV dropout at 250 mA (XDFN4/WLCSP), ±2% output accuracy, and operates from 2.2 V to 5.5 V input.

For engineers reviewing the NCP163AFCS285T2G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low noise performance in battery-powered RF front-ends, compatibility with 1 µF ceramic capacitors, active discharge capability, and WLCSP4 package footprint (0.64 mm × 0.64 mm × 0.33 mm).

Technical Context

The NCP163AFCS285T2G integrates a PMOS pass transistor with thermal shutdown, current limiting, and integrated soft-start. Its bandgap reference and MOSFET driver enable stable regulation under fast load transients (±40 mV deviation) and line transients (±1 mV deviation), with EN-controlled activation and active discharge via 280 Ω internal resistor.

This "A"-option device features normal-slew turn-on (120 µs to 95% V_OUT), supports 1 µF input/output ceramics, and maintains stability across −40°C to +125°C junction temperature with no minimum ESR requirement on C_OUT.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.85 V ±2% over load/temperature - ensures precise biasing for RF power amplifiers and ADC references.
Max Output Current	250 mA continuous - sufficient for powering single-core IoT MCUs or RF transceivers without thermal derating in WLCSP4.
Dropout Voltage	80 mV at 250 mA (V_OUT = 3.3 V), 95 mV at 250 mA (V_OUT = 2.85 V) - enables operation from 3.0 V supply with >150 mV headroom.
Output Noise	6.5 µV_RMS (10 Hz–100 kHz) - meets stringent noise requirements for GSM/Bluetooth receiver LNA stages.
PSRR	92 dB at 1 kHz, 85 dB at 10 kHz - suppresses switching noise from DC-DC converters feeding adjacent analog blocks.
Quiescent Current	12 µA typical - extends battery life in always-on sensor nodes and wearable standby modes.
Enable Threshold	V_ENH = 1.2 V, V_ENL = 0.4 V - compatible with 1.8 V GPIO without level-shifting in modern SoC platforms.

Pinout & Package

Package: WLCSP4 (Case 567KA), 0.64 mm × 0.64 mm × 0.33 mm, Pb-free, halogen-free, RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
IN	Input voltage supply	Accepts 2.2–5.5 V; requires local 1 µF X7R/X5R ceramic decoupling within 2 mm of pin.
OUT	Regulated output	Delivers stable 2.85 V; must connect 1 µF ceramic capacitor directly to this pin for stability.
EN	Chip enable control	Pull ≥1.2 V to enable; pull ≤0.4 V to disable and activate 280 Ω active discharge path to GND.
GND	Ground reference	Common return for IN, OUT, and EN; exposed pad (EPAD) must be soldered to PCB ground plane for thermal relief.

Key Features

Feature	Design Value
Ultra-low noise	6.5 µV_RMS (10 Hz–100 kHz) - preserves SNR in RF receiver chains and precision analog signal paths.
High PSRR	92 dB @ 1 kHz - rejects ripple from shared PMIC rails without additional LC filtering.
Active discharge	280 Ω internal pull-down on OUT when disabled - prevents floating outputs and ensures fast power-down sequencing.
Capacitor flexibility	Stable with ≥0.7 µF X7R/X5R ceramic output caps - supports 0201/0402 footprints for ultra-compact layouts.
Thermal protection	160°C shutdown / 140°C reset - safeguards against PCB-level overheating during sustained 250 mA loads in sealed enclosures.

Applications

RF Power Amplifier Bias	Smartphone Camera Sensor Core
Use Scenario: Providing clean bias voltage to GaAs pHEMT PA stages in LTE/5G front-end modules. IC Role / Device Role / Timing Role: Low-noise LDO delivering stable 2.85 V to PA drain node with minimal phase noise contribution. Use Value: 6.5 µV_RMS noise and 92 dB PSRR prevent AM-to-PM distortion and adjacent-channel leakage in transmit paths.	Use Scenario: Supplying image sensor analog core (ADC reference, pixel array bias) in multi-camera smartphone designs. IC Role / Device Role / Timing Role: Precision 2.85 V regulator with ±2% accuracy and fast load transient response for dynamic exposure control. Use Value: ±40 mV load transient deviation and 12 µA quiescent current extend battery runtime while preserving image SNR.
Wireless LAN SoC I/O Rail	Industrial IoT Edge Node MCU Core
Use Scenario: Powering 2.85 V I/O domain of Wi-Fi 6/6E SoCs (e.g., QCA9377, CYW20735) in access points and STBs. IC Role / Device Role / Timing Role: High-PSRR LDO decoupling digital I/O from noisy system rails during packet bursts. Use Value: 85 dB PSRR at 10 kHz suppresses switching noise from buck converters, preventing packet error rate degradation.	Use Scenario: Regulating core voltage for ARM Cortex-M4/M33 microcontrollers in battery-powered condition monitoring sensors. IC Role / Device Role / Timing Role: Ultra-low-I_Q LDO enabling <1 µA deep-sleep current while supporting 250 mA wake-up burst loads. Use Value: 12 µA I_Q and 120 µs EN turn-on time meet EEMBC ULPMark-CP v1.0 benchmark requirements for sub-10 µA average current.

RF Power Amplifier Bias

Smartphone Camera Sensor Core

Use Scenario: Providing clean bias voltage to GaAs pHEMT PA stages in LTE/5G front-end modules.

IC Role / Device Role / Timing Role: Low-noise LDO delivering stable 2.85 V to PA drain node with minimal phase noise contribution.

Use Value: 6.5 µV_RMS noise and 92 dB PSRR prevent AM-to-PM distortion and adjacent-channel leakage in transmit paths.

Use Scenario: Supplying image sensor analog core (ADC reference, pixel array bias) in multi-camera smartphone designs.

IC Role / Device Role / Timing Role: Precision 2.85 V regulator with ±2% accuracy and fast load transient response for dynamic exposure control.

Use Value: ±40 mV load transient deviation and 12 µA quiescent current extend battery runtime while preserving image SNR.

Wireless LAN SoC I/O Rail

Industrial IoT Edge Node MCU Core

Use Scenario: Powering 2.85 V I/O domain of Wi-Fi 6/6E SoCs (e.g., QCA9377, CYW20735) in access points and STBs.

IC Role / Device Role / Timing Role: High-PSRR LDO decoupling digital I/O from noisy system rails during packet bursts.

Use Value: 85 dB PSRR at 10 kHz suppresses switching noise from buck converters, preventing packet error rate degradation.

Use Scenario: Regulating core voltage for ARM Cortex-M4/M33 microcontrollers in battery-powered condition monitoring sensors.

IC Role / Device Role / Timing Role: Ultra-low-I_Q LDO enabling <1 µA deep-sleep current while supporting 250 mA wake-up burst loads.

Use Value: 12 µA I_Q and 120 µs EN turn-on time meet EEMBC ULPMark-CP v1.0 benchmark requirements for sub-10 µA average current.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Torex XC6210B285MR-G	250 mA, 2.85 V fixed, 22 µA I_Q, no active discharge, 120 mV dropout at 250 mA	Lacks active discharge and higher noise (12 µV_RMS) - unsuitable for fast power-down sequencing or RF-sensitive rails	Choose when lowest BOM cost is prioritized over noise/sequencing; verify thermal margin with 218°C/W SOT23-5 R_JA
Analog Devices ADP160ACBZ-2.85-R7	150 mA, 2.85 V fixed, 850 nA I_Q, 105 mV dropout, 22 µV_RMS noise, no active discharge	Lower current rating and higher noise limit use to ultra-low-power sensor nodes, not RF PAs or camera cores	Prefer only for sub-100 mA applications where nanoamp quiescent current outweighs noise/PSRR trade-offs

Compared with XC6210B285MR-G and ADP160ACBZ-2.85-R7, the NCP163AFCS285T2G uniquely combines 250 mA drive, 6.5 µV_RMS noise, active discharge, and WLCSP4 footprint-enabling compact, high-fidelity RF/analog power delivery unattainable with either alternative.

Availability

NCP163AFCS285T2G is available at Aetrix Electronics and suitable for RF front-end modules, smartphone camera subsystems, and industrial IoT edge nodes requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for NCP163AFCS285T2G 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 focused on energy-efficient technologies for automotive, industrial, cloud, medical, and IoT applications.

The NCP163AFCS285T2G belongs to onsemi's high-performance analog LDO portfolio, engineered specifically for noise-sensitive RF and mixed-signal systems where PSRR, dropout, and footprint are critical constraints.

FAQ

What is the dropout voltage of the NCP163AFCS285T2G at 250 mA load?

The NCP163AFCS285T2G exhibits a typical dropout voltage of 95 mV at 250 mA load for its 2.85 V output in WLCSP4 and XDFN4 packages. This value is confirmed in the Electrical Characteristics table (page 3) under "Dropout Voltage (Note 5)" for V_OUT(NOM) = 2.8 V and 2.9 V bins, interpolated for 2.85 V. The SOT23-5L variant shows higher dropout (120 mV), confirming package-dependent performance.

Does the NCP163AFCS285T2G support active discharge, and how does it function?

Yes, the NCP163AFCS285T2G includes active discharge: when the EN pin voltage drops below 0.4 V, the internal 280 Ω resistor connects OUT to GND, rapidly discharging external capacitors. This feature is explicitly documented in the PIN FUNCTION DESCRIPTION (page 2) and APPLICATIONS INFORMATION (page 14), ensuring controlled power-down in multi-rail systems without external circuitry.

What output capacitor is required for stable operation of the NCP163AFCS285T2G?

The NCP163AFCS285T2G is stable with a minimum 1 µF X7R or X5R ceramic capacitor placed directly at the OUT pin, as specified in the Applications Information section (page 14). The datasheet confirms stability down to 0.7 µF to accommodate DC-bias derating in small-case capacitors (e.g., 0201), and explicitly prohibits tantalum due to high ESR sensitivity.

How does the NCP163AFCS285T2G perform under load transients?

The NCP163AFCS285T2G delivers ±40 mV output deviation during 1 mA ↔ 200 mA load steps (10 µs rise/fall), per the ELECTRICAL CHARACTERISTICS table (page 3, TranLOAD parameter). This performance is validated in Figure 42–45, showing recovery within 5 µs - critical for maintaining signal integrity in burst-mode wireless transceivers powered by this LDO.

Is the NCP163AFCS285T2G compatible with 1.8 V GPIO enable signals?

Yes, the NCP163AFCS285T2G EN pin has a guaranteed turn-on threshold of ≥1.2 V and turn-off threshold of ≤0.4 V (page 3, V_ENH/V_ENL). A 1.8 V GPIO satisfies the 1.2 V high-level requirement with 0.6 V noise margin, and the internal 200 nA EN pull-down ensures reliable disable when GPIO is tri-stated - both confirmed in the Applications Information (page 14).

NCP163AFCS285T2G 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):: 2.85V

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)

NCP163AFCS285T2G FAQ

1.How can I place an order for NCP163AFCS285T2G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCP163AFCS285T2G 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 NCP163AFCS285T2G reliable?

The price and inventory of NCP163AFCS285T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP163AFCS285T2G is usually 5 days.

3.What payment methods are accepted for NCP163AFCS285T2G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP163AFCS285T2G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCP163AFCS285T2G?

NCP163AFCS285T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCP163AFCS285T2G 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 NCP163AFCS285T2G?

For technical support, including NCP163AFCS285T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP163AFCS285T2G requirements.

6.How does Aetrix verify that NCP163AFCS285T2G is sourced from the original manufacturer or authorized distributors?

All NCP163AFCS285T2G 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 NCP163AFCS285T2G meets industry standards.

7.What is the process for return or replacement of NCP163AFCS285T2G?

All NCP163AFCS285T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP163AFCS285T2G, 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 NCP163AFCS285T2G part is unused and in its original packaging.

Return procedure for NCP163AFCS285T2G:

1.Submit a request within 90 days.

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

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