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

onsemi NCP160AFCS250T2G

Name: NCP160AFCS250T2G
Brand: onsemi
SKU: NCP160AFCS250T2G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCP160AFCS250T2G

Manufacturer:: onsemi

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

Package:: 4-XFBGA, WLCSP

Datasheet:: NCP160AFCS250T2G.pdf

Description:: IC REG LINEAR 2.5V 250MA 4WLCSP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NCP160AFCS250T2G from onsemi is a 250 mA ultra-low-noise, high-PSRR LDO regulator with 2.5 V fixed output, 80 mV dropout at full load, ±2% output accuracy over load/temperature, and 10 µV_RMS integrated noise (10 Hz–100 kHz). It serves as a precision power supply for RF transceivers and analog signal chains in space-constrained mobile devices.

For engineers reviewing the NCP160AFCS250T2G datasheet, pinout, applications, or equivalent options, key selection criteria include its WLCSP4 0.64 mm × 0.64 mm package, active discharge capability, 18 µA quiescent current, and guaranteed stability with 1 µF ceramic capacitors on input and output.

Technical Context

The NCP160AFCS250T2G employs a PMOS pass transistor architecture enabling low dropout and inherent reverse-current protection limitations. Its bandgap reference and integrated soft-start ensure monotonic turn-on without output overshoot under varying load conditions.

It features an enable-controlled active discharge path (280 Ω) that pulls V_OUT to GND when disabled, critical for sequencing-sensitive systems. Thermal shutdown (160°C trip, 140°C reset) and current limiting (700 mA typ.) provide robust fault protection across −40°C to +125°C junction temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Current	250 mA continuous - supports RF power amplifiers and high-speed ADCs without thermal derating in compact layouts.
Dropout Voltage	80 mV at 250 mA - enables operation from 2.58 V input for 2.5 V rail, maximizing battery runtime in single-cell Li-ion systems.
PSRR	98 dB at 1 kHz - suppresses switching noise from adjacent DC-DC converters feeding sensitive RF front-ends.
Output Noise	10 µV_RMS (10 Hz–100 kHz) - meets stringent phase-noise requirements of LTE/Wi-Fi local oscillators and audio DACs.
Quiescent Current	18 µA typ. - extends standby time in always-on sensor nodes and IoT edge devices.
Enable Threshold	V_ENH = 1.2 V, V_ENL = 0.4 V - compatible with 1.8 V GPIO logic without level-shifting in modern SoC platforms.
Stability	Guaranteed with 1 µF X7R/X5R ceramic C_IN/C_OUT - eliminates need for larger, less reliable tantalum or polymer capacitors.

Pinout & Package

Package: WLCSP4 (0.64 mm × 0.64 mm × 0.33 mm), Case 567JZ, Pb-free/RoHS compliant. Exposed pad tied to GND for thermal enhancement.

Pin/Terminal	Circuit Role	Design Meaning
A1	IN	Input voltage supply (1.9–5.5 V); requires local 1 µF ceramic decoupling to minimize AC impedance.
A2	OUT	Regulated 2.5 V output; must be bypassed with 1 µF ceramic capacitor placed <1 mm from pin for PSRR and transient integrity.
B1	EN	Active-high enable; drives internal MOSFET gate and activates 280 Ω discharge path when pulled <0.4 V.
B2	GND	Common ground reference; connects to PCB ground plane and exposed pad for optimal thermal dissipation.

Key Features

Feature	Design Value
Ultra-low noise	10 µV_RMS (10 Hz–100 kHz) - preserves SNR in RF receivers and high-resolution audio paths without external filtering.
High PSRR	98 dB @ 1 kHz - rejects ripple from shared buck converter outputs, reducing need for additional LC stages.
Active output discharge	280 Ω internal resistor - ensures rapid V_OUT decay during power-down, preventing latch-up in downstream logic.
Low quiescent current	18 µA typ. - enables >1-year battery life in BLE beacons and wearable sensors operating in deep-sleep mode.
Thermal shutdown	160°C trip / 140°C reset - protects against sustained overload or poor PCB copper area without requiring external thermal monitoring.

Applications

RF Transceiver Power	Analog Sensor Signal Chain
Use Scenario: Supplying LNA, mixer, and VCO blocks in 5G NR sub-6 GHz front-end modules. IC Role / Device Role / Timing Role: Low-noise bias source delivering clean 2.5 V to RF ICs with minimal phase jitter contribution. Use Value: 10 µV_RMS noise and 98 dB PSRR directly reduce EVM degradation and adjacent-channel leakage ratio (ACLR).	Use Scenario: Powering 24-bit delta-sigma ADCs and precision op-amps in industrial process monitoring sensors. IC Role / Device Role / Timing Role: Stable, ripple-free reference voltage source for analog signal conditioning and digitization. Use Value: ±2% output accuracy and 0.001%/mA load regulation maintain measurement linearity across temperature and supply variations.
Mobile Camera ISP Core	Wearable Biometric Front-End
Use Scenario: Providing regulated 2.5 V to image signal processor (ISP) cores and high-speed MIPI CSI-2 serializers in smartphones. IC Role / Device Role / Timing Role: Primary core rail with fast load transient response (<40 mV deviation) during burst-mode pixel readout. Use Value: 80 mV dropout and 120 µs turn-on time enable seamless transition from low-power idle to full-frame capture without brownout.	Use Scenario: Powering optical heart-rate monitor (PPG) analog front-end and ADC in fitness trackers. IC Role / Device Role / Timing Role: Always-on supply with 18 µA IQ and active discharge for safe power cycling between measurements. Use Value: Sub-20 µA quiescent current extends coin-cell battery life to >6 months; 280 Ω discharge prevents false wake-ups from residual V_OUT.

RF Transceiver Power

Analog Sensor Signal Chain

Use Scenario: Supplying LNA, mixer, and VCO blocks in 5G NR sub-6 GHz front-end modules.

IC Role / Device Role / Timing Role: Low-noise bias source delivering clean 2.5 V to RF ICs with minimal phase jitter contribution.

Use Value: 10 µV_RMS noise and 98 dB PSRR directly reduce EVM degradation and adjacent-channel leakage ratio (ACLR).

Use Scenario: Powering 24-bit delta-sigma ADCs and precision op-amps in industrial process monitoring sensors.

IC Role / Device Role / Timing Role: Stable, ripple-free reference voltage source for analog signal conditioning and digitization.

Use Value: ±2% output accuracy and 0.001%/mA load regulation maintain measurement linearity across temperature and supply variations.

Mobile Camera ISP Core

Wearable Biometric Front-End

Use Scenario: Providing regulated 2.5 V to image signal processor (ISP) cores and high-speed MIPI CSI-2 serializers in smartphones.

IC Role / Device Role / Timing Role: Primary core rail with fast load transient response (<40 mV deviation) during burst-mode pixel readout.

Use Value: 80 mV dropout and 120 µs turn-on time enable seamless transition from low-power idle to full-frame capture without brownout.

Use Scenario: Powering optical heart-rate monitor (PPG) analog front-end and ADC in fitness trackers.

IC Role / Device Role / Timing Role: Always-on supply with 18 µA IQ and active discharge for safe power cycling between measurements.

Use Value: Sub-20 µA quiescent current extends coin-cell battery life to >6 months; 280 Ω discharge prevents false wake-ups from residual V_OUT.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS7A2025PDQNR	250 mA, 2.5 V fixed, 16 µA IQ, 130 mV dropout, no active discharge	Lacks active discharge; requires external circuitry for controlled V_OUT ramp-down in sequencing-critical designs	Select when lowest possible IQ is prioritized over discharge control and board space allows external discharge FET.
MCP1700T-2502E/MB	250 mA, 2.5 V fixed, 1.6 µA IQ, 600 mV dropout, no PSRR/noise specs published	Higher dropout limits use in low-V_IN battery systems; uncharacterized noise/PSRR unsuitable for RF/analog	Select only for non-sensitive digital rails where ultra-low IQ outweighs performance trade-offs.

Compared with TPS7A2025PDQNR and MCP1700T-2502E/MB, the NCP160AFCS250T2G uniquely combines ultra-low noise (10 µV_RMS), high PSRR (98 dB), active discharge, and sub-100 mV dropout in a 0.64 mm × 0.64 mm WLCSP - making it the only viable choice for RF and precision analog applications demanding all four attributes simultaneously.

Availability

NCP160AFCS250T2G is available at Aetrix Electronics and suitable for RF transceiver power, analog sensor signal chains, mobile camera ISP cores, and wearable biometric front-ends requiring stable component supply with full traceability and lifecycle management.

Supply support for NCP160AFCS250T2G 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The NCP160 series is designed specifically for ultra-low-noise, high-PSRR power delivery to RF and precision analog circuits in space-constrained portable electronics - addressing noise coupling, sequencing, and thermal challenges in modern wireless devices.

FAQ

What is the maximum input voltage rating for the NCP160AFCS250T2G?

The NCP160AFCS250T2G has an absolute maximum input voltage rating of 6 V. Operation above 5.5 V violates the recommended operating conditions and risks permanent damage. For reliable long-term performance, VIN must remain within 1.9 V to 5.5 V per the datasheet's Electrical Characteristics table.

Does the NCP160AFCS250T2G require external components for stability?

No, the NCP160AFCS250T2G is internally compensated and stable with only 1 µF X7R/X5R ceramic capacitors on both IN and OUT pins. No external resistors, capacitors, or compensation networks are needed - simplifying layout and reducing BOM count while maintaining PSRR and transient performance.

How does the active discharge function operate in the NCP160AFCS250T2G?

When the EN pin voltage falls below 0.4 V, the NCP160AFCS250T2G disables its pass transistor and activates an internal 280 Ω discharge path from OUT to GND. This pulls V_OUT to near-zero volts within microseconds, preventing back-driving of upstream regulators or unintended logic states in sequenced systems.

What is the thermal resistance (R_JA) of the NCP160AFCS250T2G in its WLCSP4 package?

The NCP160AFCS250T2G in WLCSP4 (Case 567JZ) has a typical junction-to-ambient thermal resistance (R_JA) of 108 °C/W when mounted on a standard JEDEC test board with 1 oz copper. Actual R_JA improves significantly with increased PCB copper area - e.g., dropping to ~85 °C/W with 200 mm² of 2 oz copper connected to the exposed pad.

Can the NCP160AFCS250T2G be used with input voltages below 2.5 V?

Yes - the NCP160AFCS250T2G operates down to 1.9 V input, but usable output headroom depends on load. At 250 mA, its 80 mV dropout means it can regulate 2.5 V output from as low as 2.58 V input. Below that, output voltage drops linearly with input; it cannot boost or maintain regulation below dropout threshold.

NCP160AFCS250T2G 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):: 2.5V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.175V @ 250mA

Current - Output:: 250mA

Current - Quiescent (Iq):: 23 µA

Current - Supply (Max):: -

PSRR:: 91dB ~ 48dB (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)

NCP160AFCS250T2G FAQ

1.How can I place an order for NCP160AFCS250T2G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCP160AFCS250T2G 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 NCP160AFCS250T2G reliable?

The price and inventory of NCP160AFCS250T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP160AFCS250T2G is usually 5 days.

3.What payment methods are accepted for NCP160AFCS250T2G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP160AFCS250T2G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCP160AFCS250T2G?

NCP160AFCS250T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCP160AFCS250T2G 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 NCP160AFCS250T2G?

For technical support, including NCP160AFCS250T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP160AFCS250T2G requirements.

6.How does Aetrix verify that NCP160AFCS250T2G is sourced from the original manufacturer or authorized distributors?

All NCP160AFCS250T2G 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 NCP160AFCS250T2G meets industry standards.

7.What is the process for return or replacement of NCP160AFCS250T2G?

All NCP160AFCS250T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP160AFCS250T2G, 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 NCP160AFCS250T2G part is unused and in its original packaging.

Return procedure for NCP160AFCS250T2G:

1.Submit a request within 90 days.

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

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