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

onsemi NCP163BFCT2925T2G

Name: NCP163BFCT2925T2G
Brand: onsemi
SKU: NCP163BFCT2925T2G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCP163BFCT2925T2G

Manufacturer:: onsemi

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

Package:: 4-XFBGA, WLCSP

Datasheet:: NCP163BFCT2925T2G.pdf

Description:: IC REG LIN 2.925V 250MA 4WLCSP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NCP163BFCT2925T2G from onsemi is a 250 mA ultra-low-noise, high-PSRR LDO regulator with fixed 2.925 V output, designed for RF and analog circuits in battery-powered devices. It delivers ±2% output accuracy over load/temperature, 80 mV dropout at 250 mA (XDFN4 package), 6.5 µV_RMS output noise, and 92 dB PSRR at 1 kHz - enabling clean power for smartphone baseband ICs and wireless transceivers.

For engineers reviewing the NCP163BFCT2925T2G datasheet, pinout, applications, or equivalent options, key selection criteria include its non-active-discharge architecture, WLCSP4/XDFN4/SOT23-5L package options, 12 µA quiescent current, thermal shutdown at 160°C, and compatibility with 1 µF ceramic input/output capacitors.

Technical Context

The NCP163BFCT2925T2G implements a PMOS pass transistor with integrated bandgap reference, soft-start, and enable logic. Its non-active-discharge variant ('B' suffix) omits the internal discharge FET, eliminating automatic VOUT pull-down during disable - critical for systems requiring controlled power sequencing or retention of output voltage after shutdown.

It operates across 2.2 V to 5.5 V input, supports stable regulation with 1 µF X7R/X5R ceramic capacitors, and features thermal shutdown (160°C trip, 140°C reset), current limiting (700 mA typ.), and robust line/load transient response - validated per JEDEC JESD51-7 board conditions for WLCSP4, XDFN4, and SOT23-5L packages.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.925 V ±2% over load/temperature - ensures precise biasing for RF front-end amplifiers and ADC reference rails.
Max Output Current	250 mA continuous - sufficient for powering single-core application processors or dual-band Wi-Fi/BT SoCs.
Dropout Voltage	80 mV at 250 mA (XDFN4) - enables operation from 3.0 V input while maintaining regulation down to 2.925 V output.
Output Noise	6.5 µV_RMS (10 Hz–100 kHz) - minimizes phase noise in local oscillators and jitter in high-speed data converters.
PSRR	92 dB at 1 kHz - suppresses switching noise from DC-DC converters feeding adjacent digital blocks.
Quiescent Current	12 µA typ. - extends battery life in always-on sensor nodes and low-power IoT endpoints.
Enable Threshold	V_ENH = 1.2 V, V_ENL = 0.4 V - compatible with 1.8 V/3.3 V GPIO without level-shifting.

Pinout & Package

Available in three compact packages: WLCSP4 (0.64 mm × 0.64 mm × 0.33/0.4 mm), XDFN4 (1.0 mm × 1.0 mm × 0.4 mm), and SOT23-5L (2.9 mm × 2.8 mm × 1.2 mm). The NCP163BFCT2925T2G uses the WLCSP4 package (Case 567JZ), with top-side marking "2 180" and Pb-free finish.

Pin/Terminal	Circuit Role	Design Meaning
A1	IN	Input voltage supply pin - requires 1 µF ceramic capacitor placed adjacent to minimize trace inductance.
A2	OUT	Regulated 2.925 V output - must be bypassed with 1 µF X7R/X5R ceramic capacitor for stability.
B1	EN	Chip enable - logic-high (>1.2 V) enables regulation; logic-low (<0.4 V) disables output (no active discharge).
B2	GND	Common ground connection - tied to PCB ground plane; exposed pad (EPAD) optional for thermal relief.

Key Features

Feature	Design Value
Ultra-low noise	6.5 µV_RMS output noise enables use in RF receiver chains without additional filtering.
High PSRR	92 dB at 1 kHz rejects ripple from shared power rails, reducing need for separate low-noise supplies.
No active discharge	Non-active-discharge 'B' version prevents unintended VOUT collapse during EN deassertion - essential for sequenced power-down.
Low dropout	80 mV dropout at full 250 mA load allows efficient operation from single-cell Li-ion (3.0 V min) or 3.3 V system rails.
Small footprint	WLCSP4 package (0.64 mm × 0.64 mm) saves >70% board area vs. SOT23-5L - ideal for space-constrained mobile modules.

Applications

Smartphone Baseband Power	Wi-Fi 6 Transceiver Bias
Use Scenario: Powering LTE/5G baseband processor core and I/O rails in compact smartphones. IC Role / Device Role / Timing Role: Primary low-noise LDO supplying 2.925 V to RF synthesizer and ADC reference circuitry. Use Value: 6.5 µV_RMS noise and 92 dB PSRR prevent EVM degradation and maintain <0.5° RMS phase error in QAM64 signals.	Use Scenario: Providing clean 2.925 V bias to dual-band 2.4 GHz/5 GHz Wi-Fi 6 transceiver RF front-end. IC Role / Device Role / Timing Role: Dedicated LDO for PA driver stage and mixer bias, isolated from noisy digital supply domains. Use Value: 80 mV dropout enables direct regulation from 3.3 V system rail, minimizing heat generation in thermally constrained M.2 modules.
Industrial Camera Sensor Supply	Medical Ultrasound Beamformer
Use Scenario: Powering high-resolution CMOS image sensor analog front-end in portable diagnostic cameras. IC Role / Device Role / Timing Role: Low-noise LDO delivering stable 2.925 V to column ADC and correlated double sampling circuitry. Use Value: ±2% output accuracy over −40°C to +125°C ensures consistent pixel response across operating temperature range.	Use Scenario: Supplying time-critical analog beamforming channels in handheld ultrasound probes. IC Role / Device Role / Timing Role: Precision LDO for 16-channel transmit/receive analog path, synchronized with FPGA-controlled timing engine. Use Value: 12 µA quiescent current extends probe battery life beyond 4 hours during continuous scanning sessions.

Smartphone Baseband Power

Wi-Fi 6 Transceiver Bias

Use Scenario: Powering LTE/5G baseband processor core and I/O rails in compact smartphones.

IC Role / Device Role / Timing Role: Primary low-noise LDO supplying 2.925 V to RF synthesizer and ADC reference circuitry.

Use Value: 6.5 µV_RMS noise and 92 dB PSRR prevent EVM degradation and maintain <0.5° RMS phase error in QAM64 signals.

Use Scenario: Providing clean 2.925 V bias to dual-band 2.4 GHz/5 GHz Wi-Fi 6 transceiver RF front-end.

IC Role / Device Role / Timing Role: Dedicated LDO for PA driver stage and mixer bias, isolated from noisy digital supply domains.

Use Value: 80 mV dropout enables direct regulation from 3.3 V system rail, minimizing heat generation in thermally constrained M.2 modules.

Industrial Camera Sensor Supply

Medical Ultrasound Beamformer

Use Scenario: Powering high-resolution CMOS image sensor analog front-end in portable diagnostic cameras.

IC Role / Device Role / Timing Role: Low-noise LDO delivering stable 2.925 V to column ADC and correlated double sampling circuitry.

Use Value: ±2% output accuracy over −40°C to +125°C ensures consistent pixel response across operating temperature range.

Use Scenario: Supplying time-critical analog beamforming channels in handheld ultrasound probes.

IC Role / Device Role / Timing Role: Precision LDO for 16-channel transmit/receive analog path, synchronized with FPGA-controlled timing engine.

Use Value: 12 µA quiescent current extends probe battery life beyond 4 hours during continuous scanning sessions.

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, 2.92 V output, 15 µA IQ, no active discharge, SOT-25 package only.	Lacks WLCSP4 option; higher dropout (120 mV @ 250 mA); lower PSRR (85 dB @ 1 kHz).	Select when SOT-25 footprint is required and thermal performance is less critical than size.
ROHM BD3985FVM-2.925TR	300 mA, 2.925 V output, 25 µA IQ, active discharge, VQFN040V2020 package.	Includes active discharge (not present in NCP163BFCT2925T2G); larger 2.0 mm × 2.0 mm footprint; higher IQ.	Select when automatic VOUT discharge is needed for system-level power sequencing compliance.

Compared with Torex XC6210B292MR-G and ROHM BD3985FVM-2.925TR, the NCP163BFCT2925T2G offers superior noise (6.5 µV_RMS vs. 12 µV_RMS) and PSRR (92 dB vs. 85 dB), smallest WLCSP4 footprint, and lowest quiescent current - making it optimal for ultra-portable RF-sensitive designs where board area and signal integrity are paramount.

Availability

NCP163BFCT2925T2G is available at Aetrix Electronics and suitable for smartphone baseband power, Wi-Fi 6 transceiver bias, and industrial camera sensor supply requiring stable component supply across high-volume production cycles.

Supply support for NCP163BFCT2925T2G 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, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The NCP163 series targets RF and analog power integrity - engineered specifically for noise-sensitive subsystems in mobile and wireless infrastructure where PSRR, dropout, and quiescent current directly impact signal fidelity and battery runtime.

FAQ

What is the output voltage tolerance of the NCP163BFCT2925T2G over temperature and load?

The NCP163BFCT2925T2G maintains ±2% output voltage accuracy across −40°C to +125°C junction temperature and 0 mA to 250 mA load current, as specified in the Electrical Characteristics table under VIN = VOUT(NOM) + 1 V. This tolerance applies to the WLCSP4 and XDFN4 packages; SOT23-5L retains ±2% but exhibits slightly higher load regulation drift.

Does the NCP163BFCT2925T2G include active output discharge functionality?

No, the NCP163BFCT2925T2G does not include active output discharge. The 'B' suffix denotes the non-active-discharge variant - when EN is pulled low, the pass transistor turns off but the output remains floating. This behavior is confirmed in the Ordering Information table and Pin Function Description section of the datasheet.

Which package types are offered for the NCP163BFCT2925T2G?

The NCP163BFCT2925T2G is offered exclusively in the WLCSP4 package (Case 567JZ), as indicated in the Ordering Information table on page 18 of the datasheet. It is not available in XDFN4 or SOT23-5L variants - those use different part number suffixes (e.g., BFCT2925T2G is WLCSP4; BMX2925TBG would be XDFN4).

What is the minimum recommended output capacitor for stable operation of the NCP163BFCT2925T2G?

The NCP163BFCT2925T2G is designed to remain stable with a minimum effective output capacitance of 0.7 µF, but the recommended value is 1 µF using X7R or X5R dielectric ceramic capacitors. This ensures optimal load transient response and PSRR performance across temperature and DC bias, as detailed in the Applications Information section.

How does the enable pin threshold voltage of the NCP163BFCT2925T2G interface with common logic families?

The NCP163BFCT2925T2G has an EN pin threshold of V_ENH = 1.2 V (min) and V_ENL = 0.4 V (max), making it compatible with 1.8 V and 3.3 V GPIO outputs without external level-shifting. The internal 200 nA pull-down current ensures reliable disable state when EN is left floating, per the Enable Operation section of the datasheet.

NCP163BFCT2925T2G 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):: 2.925V

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)

NCP163BFCT2925T2G FAQ

1.How can I place an order for NCP163BFCT2925T2G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCP163BFCT2925T2G 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 NCP163BFCT2925T2G reliable?

The price and inventory of NCP163BFCT2925T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP163BFCT2925T2G is usually 5 days.

3.What payment methods are accepted for NCP163BFCT2925T2G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP163BFCT2925T2G transactions.

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4.How is shipping managed for NCP163BFCT2925T2G?

NCP163BFCT2925T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCP163BFCT2925T2G 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 NCP163BFCT2925T2G?

For technical support, including NCP163BFCT2925T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP163BFCT2925T2G requirements.

6.How does Aetrix verify that NCP163BFCT2925T2G is sourced from the original manufacturer or authorized distributors?

All NCP163BFCT2925T2G 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 NCP163BFCT2925T2G meets industry standards.

7.What is the process for return or replacement of NCP163BFCT2925T2G?

All NCP163BFCT2925T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP163BFCT2925T2G, 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 NCP163BFCT2925T2G part is unused and in its original packaging.

Return procedure for NCP163BFCT2925T2G:

1.Submit a request within 90 days.

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

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