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                                                                                                      1. Home
                                                                                                      2. Semiconductors - ICs
                                                                                                      3. Power Management ICs - PMIC
                                                                                                      4. Power Factor Correctors - PFC
                                                                                                      Print Page

                                                                                                      NCP1681ABD2R2G

                                                                                                      PFC Controller, 30 V Supply, 95 kHz, NSOIC-20

                                                                                                      ONSEMI NCP1681ABD2R2G
                                                                                                      Image is for illustrative purposes only. Please refer to product description.
                                                                                                      ManufacturerONSEMI
                                                                                                      Manufacturer Part NoNCP1681ABD2R2G
                                                                                                      Order Code4051274
                                                                                                      Technical Datasheet

                                                                                                      Data Sheet

                                                                                                      See all Technical Docs
                                                                                                      Packaging Options
                                                                                                      2,157 In Stock

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                                                                                                      2157 Delivery in 4-6 Business Days(UK stock)
                                                                                                      QuantityPrice
                                                                                                      1+Rs.422.820
                                                                                                      10+Rs.280.140
                                                                                                      100+Rs.226.200
                                                                                                      500+Rs.198.360
                                                                                                      2500+Rs.159.250
                                                                                                      5000+Rs.120.140
                                                                                                      7500+Rs.81.020
                                                                                                      Price for:Each (Supplied on Cut Tape)
                                                                                                      Minimum: 1
                                                                                                      Multiple: 1
                                                                                                      Rs.422.82
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                                                                                                      Product Information

                                                                                                      ManufacturerONSEMI
                                                                                                      Manufacturer Part NoNCP1681ABD2R2G
                                                                                                      Order Code4051274
                                                                                                      Technical Datasheet

                                                                                                      Data Sheet

                                                                                                      PFC Mode of OperationMulti Mode
                                                                                                      Control ModeCurrent
                                                                                                      Frequency Mode-
                                                                                                      Supply Voltage Min-
                                                                                                      Supply Voltage Max30V
                                                                                                      IC Case / PackageNSOIC
                                                                                                      No. of Pins20Pins
                                                                                                      IC MountingSurface Mount
                                                                                                      Switching Frequency Typ100kHz
                                                                                                      Switching Frequency Min-
                                                                                                      Switching Frequency Max-
                                                                                                      Operating Temperature Min-
                                                                                                      Operating Temperature Max-
                                                                                                      Product Range-
                                                                                                      Qualification-
                                                                                                      SVHCNo SVHC (27-Jun-2024)
                                                                                                      Controller IC Case StyleNSOIC
                                                                                                      Duty Cycle (%)-
                                                                                                      Frequency95kHz
                                                                                                      Operating Supply Current-
                                                                                                      Startup Current-
                                                                                                      UVLO10.5V

                                                                                                      Product Overview

                                                                                                      NCP1681 is a totem pole continuous conduction mode (CCM)/multi-mode (CrM-CCM) power factor correction controller. It is a PFC controller IC designed to drive the bridgeless totem-pole PFC topology. The bridgeless totem-pole PFC is a power factor correction architecture that consists of a fast switching leg driven at the PWM switching frequency and a second leg that operates at the AC line frequency. This topology eliminates the diode bridge present at the input of a conventional PFC circuit, allowing significant improvement in the power stage efficiency. Typical applications are power factor correction, offline power supply, server power, telecom 5G power, networking power, gaming console power supplies, UHD TV power supplies, industrial power supplies.

                                                                                                      • Totem pole PFC topology eliminates input diode bridge, SOIC20 NB less pin 17 and 19 package
                                                                                                      • Frequency foldback in DCM with 25kHz minimum frequency
                                                                                                      • Skip mode in very light load condition, novel current sense scheme, PFC OK indicator
                                                                                                      • Digital voltage loop compensation, AC line monitoring circuit and AC phase detection
                                                                                                      • Enables high efficiency and compact design, optimized efficiency for high power design
                                                                                                      • Optimized performance across power levels, prevents operation in audible range
                                                                                                      • Complies with energy efficiency regulatory standards, simplifies design/reduces external components
                                                                                                      • Cycle-by-cycle current limit without hall effect sensor
                                                                                                      • Complies with energy efficiency regulatory standards
                                                                                                      • Allows communication with downstream converter to optimize system performance

                                                                                                      Technical Specifications

                                                                                                      PFC Mode of Operation

                                                                                                      Multi Mode

                                                                                                      Frequency Mode

                                                                                                      -

                                                                                                      Supply Voltage Max

                                                                                                      30V

                                                                                                      No. of Pins

                                                                                                      20Pins

                                                                                                      Switching Frequency Typ

                                                                                                      100kHz

                                                                                                      Switching Frequency Max

                                                                                                      -

                                                                                                      Operating Temperature Max

                                                                                                      -

                                                                                                      Qualification

                                                                                                      -

                                                                                                      Controller IC Case Style

                                                                                                      NSOIC

                                                                                                      Frequency

                                                                                                      95kHz

                                                                                                      Startup Current

                                                                                                      -

                                                                                                      Control Mode

                                                                                                      Current

                                                                                                      Supply Voltage Min

                                                                                                      -

                                                                                                      IC Case / Package

                                                                                                      NSOIC

                                                                                                      IC Mounting

                                                                                                      Surface Mount

                                                                                                      Switching Frequency Min

                                                                                                      -

                                                                                                      Operating Temperature Min

                                                                                                      -

                                                                                                      Product Range

                                                                                                      -

                                                                                                      SVHC

                                                                                                      No SVHC (27-Jun-2024)

                                                                                                      Duty Cycle (%)

                                                                                                      -

                                                                                                      Operating Supply Current

                                                                                                      -

                                                                                                      UVLO

                                                                                                      10.5V

                                                                                                      Technical Docs (2)

                                                                                                      Product Change Notice EN

                                                                                                      Technical Data Sheet EN

                                                                                                      Legislation and Environmental

                                                                                                      Country of Origin:
                                                                                                      Country in which last significant manufacturing process was carried outCountry of Origin:
                                                                                                      Thailand
                                                                                                      Country in which last significant manufacturing process was carried out
                                                                                                      Tariff No:85381090
                                                                                                      US ECCN:EAR99
                                                                                                      EU ECCN:NLR
                                                                                                      RoHS Compliant:Yes

                                                                                                      RoHS

                                                                                                      RoHS Phthalates Compliant:Yes

                                                                                                      RoHS

                                                                                                      SVHC:No SVHC (27-Jun-2024)
                                                                                                      Download Product Compliance Certificate

                                                                                                      Product Compliance Certificate

                                                                                                      Weight (kg):.00035
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