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Onsemi NCP81231 | Demoboard STR-USBC-4PORT-200W-EVK
NCP81231: Buck Controller, USB Power Delivery and Type-C Applications
Overview
| Topology | Buck Converter |
| Switching frequency | 150-1200 kHz |
| IC revision | 3 |
Description
The NCP81231 is a synchronous buck that is optimized for converting battery voltage or adaptor voltage into power supply rails required in notebook, tablet, and desktop systems, as well as many other consumer devices using USB PD standard and C−Type cables. The NCP81231 is fully compliant to the USB Power Delivery Specification when used in conjunction with a USB PD or C−Type Interface Controller. NCP81231 is designed for applications requiring dynamically controlled slew rate limited output voltage.
Features
- Wide Input Voltage Range: from 4.5 V to 28 V
- Dynamically Programmed Frequency from 150 kHz to 1.2 MHz
- I2C Interface
- Real Time Power Good Indication
- Controlled Slew Rate Voltage Transitioning
- Feedback Pin with Internally Programmed Reference
- High Resolution DAC Voltage
- Two Independent Current Sensing Inputs
- Support Inductor DCR Sensing
- Over Temperature Protection
- Adaptive Non−Overlap Gate Drivers
- Filter Capacitor Switch Control
- 100% Duty Cycle Operation
- Latched Over−Voltage and Over−Current Protection
- Dead Battery Power Support
- 5 x 5 mm QFN32 Package
Typical applications
- Notebooks, Tablets, Desktops, Gaming, Monitors, TVs, and Set Top Boxes, Consumer Electronics,
- Power Banks, Car Chargers, Docking Stations
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | IRP,40K(A) | ISAT,30%(A) | RDC typ.(mΩ) | fres(MHz) | VOP(V) | SW(mm) | Ti | To | Interface Type | Type | Variant | Gender | Pins | PCB Thickness(mm) | Working Voltage(V (AC)) | Packaging | G(mm) | Operating Temperature | H(mm) | Operation Force(g) | Electrical Life(Cycles) | Actuator Color | Washable | Vaporphase process | IR(A) | L(mH) | RDC max.(mΩ) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | Mount | SamplesAvailability & Sample | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | SPECWL-SMSW SMT Mono-color Side View Waterclear, 470 nm, Blue PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMSW SMT Mono-color Side View Waterclear | Dominant Wavelength [typ.]470 nm | Emitting ColorBlue | Peak Wavelength [typ.]468 nm | Luminous Intensity [typ.]150 mcd | Forward Voltage [typ.]3.4 V | Chip TechnologyInGaN | Viewing Angle Phi 0° [typ.]120 ° | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | PackagingTape and Reel | – | Operating Temperature -40 °C up to +85 °C | Height1 mm | – | – | – | – | – | – | – | – | – | – | – | Length3.2 mm | Width1.5 mm | MountSMT | –Check availability | |||
| SPECWL-SMSW SMT Mono-color Side View Waterclear, 525 nm, Green PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMSW SMT Mono-color Side View Waterclear | Dominant Wavelength [typ.]525 nm | Emitting ColorGreen | Peak Wavelength [typ.]520 nm | Luminous Intensity [typ.]600 mcd | Forward Voltage [typ.]3.3 V | Chip TechnologyInGaN | Viewing Angle Phi 0° [typ.]120 ° | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | PackagingTape and Reel | – | Operating Temperature -40 °C up to +85 °C | Height1 mm | – | – | – | – | – | – | – | – | – | – | – | Length3.2 mm | Width1.5 mm | MountSMT | –Check availability | |||
 | SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 590 nm, Yellow | Availability – | Downloads27 files RAY files
| Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]590 nm | Emitting ColorYellow | Peak Wavelength [typ.]595 nm | Luminous Intensity [typ.]120 mcd | Forward Voltage [typ.]2 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | PackagingTape and Reel | – | Operating Temperature -40 °C up to +85 °C | Height0.7 mm | – | – | – | – | – | – | – | – | – | – | – | Length1.6 mm | Width0.8 mm | MountSMT | –Check availability | ||
| SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 625 nm, Red | Availability – | Downloads27 files RAY files
| Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]625 nm | Emitting ColorRed | Peak Wavelength [typ.]630 nm | Luminous Intensity [typ.]250 mcd | Forward Voltage [typ.]2 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | PackagingTape and Reel | – | Operating Temperature -40 °C up to +85 °C | Height0.7 mm | – | – | – | – | – | – | – | – | – | – | – | Length1.6 mm | Width0.8 mm | MountSMT | –Check availability | ||
 | SPECWE-CMB Common Mode Power Line Choke, –, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMB Common Mode Power Line Choke | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Pins4 | – | – | – | Pin length3 mm | Operating Temperature -40 °C up to +125 °C | Height25.5 mm | – | – | – | – | – | Rated Current4 A | Inductance2.2 mH | DC Resistance30 mΩ | Rated Voltage250 V (AC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length23.5 mm | Width13.8 mm | MountTHT | –Check availability | |||
 | SPECWR-PHD Pin Header - Dual, –, – PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | Simulation– | Availability – | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Dual | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | TypeAngled | – | GenderPin Header | Pins16 | – | Working Voltage250 V (AC) | PackagingBag | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | Rated Current3 A | – | – | – | – | – | Length20.32 mm | – | MountTHT | –Check availability | |
 | SPECWA-SPAIE Plastic Spacer Stud, metric, internal/ external, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWA-SPAIE Plastic Spacer Stud, metric, internal/ external | – | – | – | – | – | – | – | – | – | – | – | – | SW6 mm | Inner ThreadM3 | Outer ThreadM3 | – | – | – | – | – | – | – | PackagingBag | – | Operating Temperature -30 °C up to +110 °C | – | – | – | – | – | – | – | – | – | – | – | MaterialPolyamide | Length10 mm | – | – | –Check availability | ||
 | SPECWS-TASV J-Bend SMT Tact Switch 3.5x2.9 mm, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWS-TASV J-Bend SMT Tact Switch 3.5x2.9 mm | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | PackagingTape and Reel | – | Operating Temperature -40 °C up to +85 °C | Height1.7 mm | Operation Force350 g | Electrical Life200000 Cycles | Actuator ColorBlue | WashableNo | Vaporphase processnot specified | Rated Current0.05 A | – | – | Rated Voltage12 V (AC) | – | – | – | – | – | –Check availability | ||
 | SPECWA-SPAII Plastic Spacer Stud, metric, internal/ internal, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWA-SPAII Plastic Spacer Stud, metric, internal/ internal | – | – | – | – | – | – | – | – | – | – | – | – | SW6 mm | Inner ThreadM3 | – | – | – | – | – | – | – | – | PackagingBag | – | Operating Temperature -30 °C up to +110 °C | – | – | – | – | – | – | – | – | – | – | – | MaterialPolyamide | Length30 mm | – | – | –Check availability | ||
 | SPECWR-USB Type C Connectors, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-USB Type C Connectors | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Interface TypeType C | TypeHorizontal | – | GenderReceptacle | Pins24 | PCB Thickness1.6 mm | Working Voltage48 V (AC) | PackagingTape and Reel | Pin length1.9 mm | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | Rated Current5 A | – | – | – | – | – | – | – | MountTHR | –Check availability | ||
 | SPECWR-PHD Pin Header - Single, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | TypeStraight | – | GenderPin Header | Pins2 | – | Working Voltage250 V (AC) | PackagingBag | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | Rated Current3 A | – | – | – | – | – | Length5.08 mm | – | MountTHT | –Check availability | ||
 | SPECWR-USB Mini/Micro Connectors, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-USB Mini/Micro Connectors | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Interface TypeType B | TypeHorizontal | Variantwith Pads & Pegs | GenderReceptacle | Pins5 | – | Working Voltage30 V (AC) | PackagingTape and Reel & Mylar | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | Rated Current1 A | – | – | – | – | – | – | – | MountSMT | –Check availability | ||
 | SPECWE-MAPI SMT Power Inductor, –, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MAPI SMT Power Inductor | – | – | – | – | – | – | – | Performance Rated Current5.1 A | Saturation Current @ 30%8.2 A | DC Resistance39.9 mΩ | Self Resonant Frequency24 MHz | Operating Voltage80 V | – | – | – | – | – | – | – | Pins2 | – | – | – | – | Operating Temperature -40 °C up to +125 °C | Height3.1 mm | – | – | – | – | – | Rated Current3.9 A | Inductance0.0047 mH | DC Resistance44 mΩ | – | – | – | Length4.3 mm | Width4.3 mm | MountSMT | –Check availability | |||
 | SPECWR-PHD Socket Header - Dual, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Socket Header - Dual | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | TypeAngled | – | GenderSocket Header | Pins16 | – | Working Voltage250 V (AC) | PackagingTray | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | Rated Current3 A | – | – | – | – | – | Length20.82 mm | – | MountTHT | –Check availability | ||
| SPECWR-PHD Socket Header - Dual, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Socket Header - Dual | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | TypeAngled | – | GenderSocket Header | Pins20 | – | Working Voltage250 V (AC) | PackagingTray | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | Rated Current3 A | – | – | – | – | – | Length25.9 mm | – | MountTHT | –Check availability |
Availability Forecast
WE item number Packaging unitsLead time
––– weeks
| Expected Availability | Opening inventory | Quantity |
|---|---|---|
| Current Availability | – | – |
There is no forecast for this quantity request.
Does it just not fit? Please contact us.Simply contact our service team for special orders and bulk quantities.Contact us