IC manufacturers Onsemi
IC manufacturers (103)
- All manufacturers
Analog Devices
Infineon Technologies
Microchip
Onsemi
Renesas
ROHM
STMicroelectronics
Texas Instruments
- 3peak incorporated (28)
- Ablic (23)
- Acco Semiconductor (1)
- Advanced Power (4)
- Allegro Microsystems (100)
- Alpha & Omega Semiconductor (37)
- AnalogySemi (3)
- AnDAPT Inc (204)
- Anpec (13)
- AXElite (2)
- Backward (6)
- Bright Power Semiconductor (1)
- Broadcom (46)
- Cambridge GaN Devices (18)
- Chipanalog Micro (10)
- Cologne Chips (1)
- Convenient Power (1)
- Dialog Semiconductor (12)
- Diodes Incorporated (259)
- Divimath (8)
- Elmos AG (1)
- EPC (140)
- e-Peas Semiconductors (1)
- Eta Solutions Co. Ltd. (9)
- GaN Systems (8)
- GaNPower (3)
- Giantec (1)
- Gstek Wuxi (1)
- Helix Semiconductor (7)
- IKON (1)
- Indie Semiconductor (8)
- Innovision Semiconductor Inc (2)
- Intel (68)
- Inventchip Technology (3)
- ISSI (51)
- JoulWatt (20)
- KDPOF (3)
- Kinetic Technology (8)
- Lattice semiconductor Corporation (38)
- Littelfuse (1)
- Lumissil Microsystems (8)
- M3 Technology (M3Tek) (7)
- Macnica (22)
- Marvell Semiconductor (1)
- MaxLinear (181)
- Menlo Micro (1)
- MikroE (25)
- MindCet (2)
- Monolithic Power Systems (980)
- Navitas Semiconductor Inc (6)
- NewEdge Technologies, Inc. (1)
- Nexperia (267)
- Nisshinbo Micro Device Inc. (10)
- Novosense Micro (1)
- NXP (337)
- O2 Micro International Ltd (10)
- On Bright (7)
- Panasonic (2)
- PN Junction Semiconductor (2)
- Power Integrations (117)
- Powermat (1)
- Pulsiv (19)
- Qorvo (97)
- Realsil SuRealsil(tek) Microelectronics (1)
- Richtek (297)
- Sanken Electric Co., Ltd. (16)
- Sckipio (6)
- Semtech (86)
- SG-Micro (58)
- SiFive (2)
- Silanna Semiconductor (9)
- Silergy Corporation (33)
- Silicon Laboratory Inc. (108)
- Silicontent Technology (59)
- Silvertel (59)
- Skycore Semiconductors (1)
- Skyworks (33)
- Southchip (14)
- Summit Wireless (1)
- Tagore Tech (7)
- Taiwan Semiconductor (1)
- TDK Corporation (1)
- Tempo Semiconductor (1)
- Torex (37)
- Toshiba (25)
- Transphorm (21)
- TransSIP (2)
- Union (21)
- uPI Semiconductor (2)
- Valens Semiconductor (31)
- Wise Integration (3)
- Wolfspeed (23)
- Xilinx (22)
- XL Semiconductor (3)
- XYSemi (62)
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 | L(mm) | To | Ti | C | VR(V (DC)) | Safety Class | dV/dt(V/µs) | DF @ 1 kHz(%) | RISO | Pitch(mm) | W(mm) | H(mm) | ISAT,10%(A) | fres(MHz) | Version | SW(mm) | Endurance(h) | IRIPPLE(mA) | ILeak(µA) | DF(%) | Ø D(mm) | Pins | Type | Mount | G(mm) | Working Voltage(V (AC)) | Operating Temperature | Operation Force(g) | Schematic | Packaging | VRMS(V) | VDC(V) | VBR(V) | IPeak(A) | Wmax(J) | PDiss(W) | VDE Approval | L(µH) | IR(A) | RDC max.(mΩ) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WR-PHD Pin Header - Single, 5.08 mm, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | Length5.08 mm | – | – | – | – | – | – | – | Insulation Resistance1000 MΩ | Pitch2.54 mm | – | – | – | – | – | – | – | – | – | – | – | Pins2 | TypeStraight | MountTHT | – | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | – | – | PackagingBag | – | – | – | – | – | – | – | – | Rated Current3 A | – | |||
 | WA-SPAIE Plastic Spacer Stud, metric, internal/ external, 10 mm, M3 | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWA-SPAIE Plastic Spacer Stud, metric, internal/ external | Length10 mm | Outer ThreadM3 | Inner ThreadM3 | – | – | – | – | – | – | – | – | – | – | – | – | SW6 mm | – | – | – | – | – | – | – | – | – | – | Operating Temperature -30 °C up to +110 °C | – | – | PackagingBag | – | – | – | – | – | – | – | – | – | – | |||
 | WE-TI Radial Leaded Wire Wound Inductor, 11 mm, – | Downloads15 files EDA models: Components ZIP
Download all 15 files as zip archive | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TI Radial Leaded Wire Wound Inductor | Length11 mm | – | – | – | – | – | – | – | – | – | Width11 mm | Height19 mm | Saturation Current @ 10%3.1 A | Self Resonant Frequency3.6 MHz | VersionHeat Shrinking Tube | – | – | – | – | – | – | – | – | MountTHT | – | – | Operating Temperature -40 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | Inductance100 µH | Rated Current2.6 A | DC Resistance90 mΩ | |||
 | WCAP-AT1H Aluminum Electrolytic Capacitors, 11 mm, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-AT1H Aluminum Electrolytic Capacitors | Length11 mm | – | – | Capacitance47 µF | Rated Voltage25 V (DC) | – | – | – | – | Pitch2.5 mm | – | – | – | – | – | – | Endurance 5000 | Ripple Current160 mA | Leakage Current11.75 µA | Dissipation Factor14 % | Diameter6.3 mm | – | – | – | – | – | – | – | – | PackagingAmmopack | – | – | – | – | – | – | – | – | – | – | ||||
| WCAP-AT1H Aluminum Electrolytic Capacitors, 11.5 mm, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-AT1H Aluminum Electrolytic Capacitors | Length11.5 mm | – | – | Capacitance47 µF | Rated Voltage35 V (DC) | – | – | – | – | Pitch3.5 mm | – | – | – | – | – | – | Endurance 8000 | Ripple Current240 mA | Leakage Current16.45 µA | Dissipation Factor12 % | Diameter8 mm | – | – | – | – | – | – | – | – | PackagingAmmopack | – | – | – | – | – | – | – | – | – | – | ||||
 | WE-VD Disk Varistor, 12.5 mm, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-VD Disk Varistor | Length12.5 mm | – | – | – | – | – | – | – | – | – | Width4.4 mm | Height16 mm | – | – | VersionTHT | – | – | – | – | – | Diameter12.5 mm | – | – | MountTHT | – | – | Operating Temperature -40 °C up to +105 °C | – | – | – | AC Operating Voltage275 V | DC Operating Voltage350 V | (Reverse) Breakdown Voltage430 V | (Reverse) Peak Pulse Current3500 A | Energy Absorption80 J | Power Dissipation0.4 W | VDE ApprovalYes | – | – | – | ||||
 | WCAP-FTX2 Film Capacitors, 13 mm, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTX2 Film Capacitors | Length13 mm | – | – | Capacitance100 nF | Rated Voltage275 V (DC) | Safety ClassX2 | Rate of Voltage Rise300 V/µs | Dissipation Factor0.1 % | Insulation Resistance30 GΩ | Pitch10 mm | Width7 mm | Height13 mm | – | – | – | – | – | – | – | – | – | – | – | MountBoxed THT | Pin length18 mm | – | Operating Temperature -40 °C up to +105 °C | – | – | PackagingBulk | – | – | – | – | – | – | – | – | – | – | ||||
| WCAP-FTX2 Film Capacitors, 15 mm, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTX2 Film Capacitors | Length15 mm | – | – | Capacitance330 nF | Rated Voltage275 V (DC) | Safety ClassX2 | Rate of Voltage Rise260 V/µs | Dissipation Factor0.1 % | Insulation Resistance30 GΩ | Pitch12.5 mm | Width8.5 mm | Height14 mm | – | – | – | – | – | – | – | – | – | – | – | MountBoxed THT | Pin length18 mm | – | Operating Temperature -40 °C up to +105 °C | – | – | PackagingBulk | – | – | – | – | – | – | – | – | – | – | ||||
| WCAP-AT1H Aluminum Electrolytic Capacitors, 16 mm, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-AT1H Aluminum Electrolytic Capacitors | Length16 mm | – | – | Capacitance220 µF | Rated Voltage25 V (DC) | – | – | – | – | Pitch5 mm | – | – | – | – | – | – | Endurance 10000 | Ripple Current580 mA | Leakage Current55 µA | Dissipation Factor14 % | Diameter10 mm | – | – | – | – | – | – | – | – | PackagingAmmopack | – | – | – | – | – | – | – | – | – | – | ||||
 | WCAP-ATLI Aluminum Electrolytic Capacitors, 20 mm, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATLI Aluminum Electrolytic Capacitors | Length20 mm | – | – | Capacitance680 µF | Rated Voltage35 V (DC) | – | – | – | – | Pitch5 mm | – | – | – | – | – | – | Endurance 5000 | Ripple Current2260 mA | Leakage Current238 µA | Dissipation Factor9 % | Diameter13 mm | – | – | – | – | – | – | – | – | PackagingAmmopack | – | – | – | – | – | – | – | – | – | – | ||||
 | WR-PHD Pin Header - Dual, 25.4 mm, – | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Dual | Length25.4 mm | – | – | – | – | – | – | – | Insulation Resistance1000 MΩ | Pitch2.54 mm | – | – | – | – | – | – | – | – | – | – | – | Pins20 | TypeAngled | MountTHT | – | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | – | – | PackagingBag | – | – | – | – | – | – | – | – | Rated Current3 A | – | ||
 | WE-FI Leaded Toroidal Line Choke, 26 mm, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-FI Leaded Toroidal Line Choke | Length26 mm | – | – | – | – | – | – | – | – | – | Width13 mm | – | – | – | – | – | – | – | – | – | – | – | – | MountTHT | Pin length15 mm | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | – | – | – | – | Inductance150 µH | Rated Current5.4 A | DC Resistance42 mΩ | |||
 | WA-SPAII Plastic Spacer Stud, metric, internal/ internal, 30 mm, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWA-SPAII Plastic Spacer Stud, metric, internal/ internal | Length30 mm | – | Inner ThreadM3 | – | – | – | – | – | – | – | – | – | – | – | – | SW6 mm | – | – | – | – | – | – | – | – | – | – | Operating Temperature -30 °C up to +110 °C | – | – | PackagingBag | – | – | – | – | – | – | – | – | – | – | |||
 | WS-SLTV THT Mini Slide Switch, Opposite Side Connection 10x2.5 mm, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | – | – | – | – | Rated Voltage12 V (DC) | – | – | – | Insulation Resistance10000 MΩ | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Operating Temperature -40 °C up to +85 °C | Operation Force800 g | SchematicSPDT | PackagingBulk | – | – | – | – | – | – | – | – | Rated Current0.5 A | – | ||||
 | WA-SNTE Snap-In Stop Spacer for Printed Circuit Boards, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWA-SNTE Snap-In Stop Spacer for Printed Circuit Boards | – | – | Inner ThreadM3 | – | – | – | – | – | – | – | – | Height2.4 mm | – | – | – | SW5.5 mm | – | – | – | – | – | – | – | – | – | – | Operating Temperature -30 °C up to +85 °C | – | – | PackagingBag | – | – | – | – | – | – | – | – | – | – | |||
750317576 | Inductor, –, – | Simulation– | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Inductor | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
750316907 | Transformer, –, – | Simulation– | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |