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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) - PFC (Power Factor Correction) > NCP1653DR2
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NCP1653DR2

Manufacturer Part Number:
NCP1653DR2
Manufacturer / Brand
onsemi
Part of Description:
IC PFC CTRLR CCM 110KHZ 8SOIC
Datasheets:
NCP1653DR2(1).pdfNCP1653DR2(2).pdfNCP1653DR2(3).pdf
Lead Free Status / RoHS Status:
RoHS non-compliant
Stock Condition:
New original, 39100 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number NCP1653DR2
Manufacturer / Brand onsemi
Stock Quantity 39100 pcs Stock
Category Integrated Circuits (ICs) > Power Management (PMIC) - PFC (Power Factor Correction)
Description IC PFC CTRLR CCM 110KHZ 8SOIC
Lead Free Status / RoHS Status: RoHS non-compliant
RFQ NCP1653DR2 Datasheets NCP1653DR2 Details PDF
NCP1653DR2 Details PDF for FR.pdf
NCP1653DR2 Details PDF for KR.pdf
NCP1653DR2 Details PDF for DE.pdf
NCP1653DR2 Details PDF for ES.pdf
NCP1653DR2 Details PDF for IT.pdf
Voltage - Supply 8.75V ~ 18V
Supplier Device Package 8-SOIC
Series -
Package / Case 8-SOIC (0.154', 3.90mm Width)
Package Tape & Reel (TR)
Operating Temperature -40°C ~ 125°C
Mounting Type Surface Mount
Mode Continuous Conduction (CCM)
Frequency - Switching 90kHz ~ 110kHz
Base Product Number NCP1653

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

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Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
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NCP1653DR2 Product Details:

The NCP1653DR2 is a specialized Power Factor Correction (PFC) integrated circuit designed by ON Semiconductor, targeting power supply and electronic conversion applications that require efficient energy management. This advanced IC addresses critical design challenges in power electronics by implementing continuous conduction mode (CCM) functionality with precise switching characteristics.

The device operates within a wide temperature range of -40°C to 125°C, making it suitable for harsh industrial and automotive environments. Its primary function is to improve power factor and reduce harmonic distortion in electrical systems, which enhances overall power conversion efficiency.

Key specifications include a switching frequency between 90kHz and 110kHz and a supply voltage range of 8.75V to 18V. The IC is packaged in a compact 8-SOIC surface-mount format, facilitating integration into dense electronic designs while maintaining robust performance.

The NCP1653DR2 offers significant advantages such as high-precision power factor correction, low harmonic distortion, and reliable operation across challenging temperature conditions. Its continuous conduction mode ensures smooth current flow and minimizes energy losses during power conversion processes.

Typical application areas include switch-mode power supplies, industrial power systems, LED lighting drivers, and various consumer and professional electronic equipment requiring high-efficiency power management.

While direct equivalent models might vary, similar PFC controllers from manufacturers like Texas Instruments (UCC28070) and Fairchild Semiconductor (FAN7527) provide comparable functionality. However, the NCP1653DR2's specific performance characteristics make it uniquely suited for particular design requirements.

The product is surface-mountable and comes in cut tape packaging, supporting straightforward PCB integration. Note that the current version contains lead and is thus not fully RoHS compliant, which may impact selection for certain modern electronic design applications.

NCP1653DR2 Image
NCP1653DR2 (1)

NCP1653DR2 Key Technical Attributes

Manufacturer Part Number: NCP1653DR2

Manufacturer: AMI Semiconductor / ON Semiconductor

RoHS: Contains lead / RoHS non-compliant

NCP1653DR2 Packing Size

Type: 8-SOIC

Material: SOP-8

Size: 8-SOIC (0.154", 3.90mm Width)

Pin configuration: Standard 8 pins

Thermal characteristics: High thermal resistance

Electrical properties: Voltage - Supply: 8.75 V ~ 18 V

NCP1653DR2 Application

The NCP1653DR2 is specifically designed for applications in Power Factor Correction (PFC) used in low to mid-power AC/DC converters ensuring compliance with energy-saving regulations and improving the overall efficiency of the system.

NCP1653DR2 Features

The NCP1653DR2 Integrated Circuit (IC) is a Power Factor Correction (PFC) controller operating in Continuous Conduction Mode (CCM), which handles frequencies between 90kHz and 110kHz. The IC benefits systems by reducing total harmonic distortion and increasing power factor, leading to better energy efficiency in electronic appliances. It supports a broad range of input voltage from 8.75 V to 18 V, making it versatile for various power applications.

NCP1653DR2 Quality and Safety Features

The NCP1653DR2 encompasses Moisture Sensitivity Level (MSL) 1, indicating unlimited floor life under normal environmental conditions, thereby reducing degradation risk. This component is capable of withstanding operational temperatures ranging from -40°C to 125°C, ensuring reliability in extreme conditions.

NCP1653DR2 Compatibility

The NCP1653DR2 is compatible with various types of AC/DC power converters that require efficient power factor correction. The Surface Mount technology used for mounting this IC onto PCBs makes it suitable for streamlined, automated manufacturing processes.

NCP1653DR2 Datasheet PDF

For complete and in-depth technical specifics and application guidelines for the NCP1653DR2, all our customers are encouraged to download the most authoritative datasheet PDF directly from our website on the current page.

Quality Distributor

IC-Components is recognized as a premium distributor of AMI Semiconductor / ON Semiconductor products. For assured quality and reliability for your necessary components like the NCP1653DR2, and competitively priced offers, ensure to get a quote and extensive product details at our website. IC-Components ensures you get genuine components backed with exceptional customer support and fast delivery services.

Frequently Asked Questions

What are the key design constraints when integrating the NCP1653DR2 into a high-power AC-DC converter requiring continuous conduction mode operation?
The NCP1653DR2 is optimized for continuous conduction mode (CCM) power factor correction (PFC) and operates within a narrow switching frequency range of 90 kHz to 110 kHz, which must be accounted for in the output inductor selection and EMI filter design. Its supply voltage range of 8.75 V to 18 V necessitates a stable auxiliary rail or bootstrap supply, especially during startup and light-load conditions. Additionally, the device lacks internal soft-start control, so external circuitry or careful timing of the VCC supply is required to prevent inrush current stress on the boost diode and MOSFET. Designers must also ensure the feedback loop compensation network accounts for the fixed internal voltage reference and error amplifier characteristics to maintain stability across line and load variations.
Can the NCP1653DR2 be used in discontinuous conduction mode (DCM) applications, and what are the trade-offs if forced into such operation?
The NCP1653DR2 is specifically designed for continuous conduction mode (CCM) and does not support true DCM operation. Attempting to use it in DCM—such as in very low-power or universal input designs—results in degraded power factor, increased input current harmonics, and potential instability due to the fixed on-time control architecture. While the device may still regulate output voltage under light loads, it will not meet IEC 61000-3-2 Class D harmonic limits. For DCM applications, consider dedicated controllers like the NCP1607 or FAN7544 instead.
What are the critical considerations when replacing an existing PFC controller with the NCP1653DR2 in a legacy industrial power supply design?
When substituting the NCP1653DR2 for another PFC IC, verify compatibility of the gate drive strength (typically 1.5 A peak sink/source), feedback interface (voltage-mode control with internal 2.5 V reference), and oscillator synchronization requirements. Unlike some alternatives (e.g., UCC28170), the NCP1653DR2 lacks a SYNC pin, so external clocking is not supported. Also, confirm that the existing VCC supply can maintain 8.75 V minimum during brownout conditions, as undervoltage lockout (UVLO) thresholds are fixed. Thermal performance must be re-evaluated due to the 8-SOIC package’s limited heat dissipation; ensure adequate copper area or airflow if replacing a higher-pin-count or exposed-pad device.
How does the NCP1653DR2 perform under extended operation at high ambient temperatures, and what derating practices are recommended for industrial environments?
The NCP1653DR2 is rated for operation from –40°C to 125°C junction temperature, but sustained operation near the upper limit reduces long-term reliability due to electromigration and oxide degradation. In industrial settings with ambient temperatures exceeding 85°C, derate the maximum duty cycle and ensure the PCB layout minimizes thermal resistance between the IC and ground plane. The 8-SOIC package has an RθJA of approximately 160°C/W; thus, even modest power dissipation (e.g., >50 mW) can cause significant self-heating. Use thermal vias under the device and avoid placing heat-sensitive components nearby.
Is the NCP1653DR2 suitable for universal input (85–265 VAC) offline PFC stages, and what external components require special attention in such designs?
Yes, the NCP1653DR2 is well-suited for universal input offline PFC applications, but the high-voltage startup resistor and VCC capacitor must be carefully selected to minimize standby power while ensuring reliable startup. The input voltage sensing network (connected to the VIN pin) should use high-precision, high-voltage resistors with low temperature coefficients to maintain accurate brownout and overvoltage protection thresholds across the full input range. Additionally, the current sense resistor must handle peak currents during low-line startup without saturation, and its parasitic inductance should be minimized to avoid false triggering of the cycle-by-cycle current limit.
What alternatives exist if the NCP1653DR2 is discontinued or unavailable, and how do they compare in terms of pin compatibility and performance?
Direct drop-in replacements are limited due to the NCP1653DR2’s unique combination of CCM operation, fixed-frequency control, and 8-SOIC footprint. Potential alternatives include the ON Semiconductor NCP1654 (enhanced version with soft-start and SYNC) or Texas Instruments UCC28180, though both require layout and compensation adjustments. The NCP1654 offers better startup behavior and higher integration but uses a different pinout. The UCC28180 provides digital configurability and higher efficiency but operates in average current mode, necessitating a complete control loop redesign. Always validate EMI, transient response, and efficiency before finalizing any substitution.
How should the feedback compensation network be designed for the NCP1653DR2 to ensure stability across wide load ranges without sacrificing dynamic response?
The NCP1653DR2 uses a transconductance error amplifier with a fixed internal reference, requiring an external Type II or Type III compensation network between the COMP and FB pins. For typical boost PFC applications, start with a Type II compensator: set the zero around 10–20 Hz to cancel the output capacitor ESR pole, and place the pole above the switching frequency (e.g., 150 kHz) to attenuate high-frequency noise. Use a 100–220 pF capacitor from COMP to ground to limit bandwidth and prevent instability during load transients. Simulation with actual parasitics and bench validation under 10%–100% load steps are essential, as the phase margin can degrade significantly at light loads due to right-half-plane zero effects inherent in boost converters.
Does the NCP1653DR2 support active inrush current limiting, and if not, what external circuitry is required to protect the boost stage during AC line connection?
The NCP1653DR2 does not include built-in inrush current limiting. Therefore, an external NTC thermistor or relay-based bypass circuit must be implemented at the AC input to limit surge current through the rectifier and bulk capacitor. Alternatively, a pre-charge circuit with a series resistor and timed relay can be used in higher-reliability systems. Failure to address inrush may cause premature failure of the bridge rectifier or input fuse, especially in designs with large hold-up capacitors (>470 µF). The timing of VCC application relative to AC connection should also be controlled to prevent the controller from attempting to regulate before the bulk voltage stabilizes.
Can the NCP1653DR2 be used in multi-phase or interleaved PFC configurations, and what synchronization challenges arise?
The NCP1653DR2 is a single-phase controller and lacks phase synchronization capabilities, making it unsuitable for direct use in interleaved or multi-phase PFC topologies without external clock management. If attempting a dual-stage design, each NCP1653DR2 would operate at its own free-running frequency (90–110 kHz), potentially causing beat frequencies and increased EMI. To implement interleaving, consider using a master-slave architecture with a dedicated multi-phase controller (e.g., NCP1630) or generate synchronized clocks externally and disable the internal oscillator—though this requires modifying the RT/CT pin configuration and is not officially supported by the datasheet.
What are the implications of the NCP1653DR2’s RoHS non-compliance (contains lead) for export or deployment in regulated markets?
The NCP1653DR2 is marked as RoHS non-compliant due to the presence of lead in its plating or packaging, which may restrict its use in products destined for the European Union, China, or other regions enforcing strict RoHS directives. While exemptions exist for certain industrial or military applications (e.g., RoHS Annex III, Category 9), commercial consumer electronics typically require full compliance. Engineers should verify end-market regulations and consider compliant alternatives such as the NCP1654DRG (lead-free, RoHS-compliant) if regulatory approval is mandatory. Note that leaded packages may also affect solder paste selection and reflow profiles during assembly.

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