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L4981BD
L4981BD is a Power Factor Correction PWM Controller with a low current consumption of 0.3mA and a frequency of 115KHz, packaged in a 20-pin SO tube
Brands: Stmicroelectronics
Mfr.Part #: L4981BD
Datasheet: L4981BD Datasheet (PDF)
Package/Case: SO-20
Product Type: Power Factor Correction - PFC
RoHS Status:
Stock Condition: 9458 pcs, New Original
Warranty: 1 Year Ovaga Warranty - Find Out More
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The L4981BD is a high-voltage synchronous step-down switching regulator controller. It is designed for use in wide input voltage range applications up to 150V. The device operates with a fixed switching frequency of 150 kHz and provides an adjustable output voltage range from 3.3V to 125V, making it suitable for a variety of power supply designs.The L4981BD features a current-mode control architecture for improved stability and transient response. It also includes a soft-start function to prevent inrush currents during startup, as well as overvoltage and overcurrent protection for added reliability.Other key features of the L4981BD include programmable overcurrent protection, an adjustable peak current limit, and a synchronization pin for external clocking. The device comes in a compact and thermally enhanced SO-16 package, making it suitable for space-constrained applications.
Features
Application
Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| ECCN US | EAR99 | ECCN EU | NEC |
| Packing Type | Tube | RoHs compliant | Ecopack2 |
| Grade | Industrial |
Shipping
| Shipping Type | Ship Fee | Lead Time | |
|---|---|---|---|
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DHL | $20.00-$40.00 (0.50 KG) | 2-5 days |
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Fedex | $20.00-$40.00 (0.50 KG) | 2-5 days |
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UPS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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TNT | $20.00-$40.00 (0.50 KG) | 2-5 days |
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EMS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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REGISTERED AIR MAIL | $20.00-$40.00 (0.50 KG) | 2-5 days |
Processing Time：Shipping fee depend on different zone and country.
Payment
| Terms of payment | Hand Fee | |
|---|---|---|
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Wire Transfer | charge US$30.00 banking fee. |
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Paypal | charge 4.0% service fee. |
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Credit Card | charge 3.5% service fee. |
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Western Union | charge US.00 banking fee. |
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Money Gram | charge US$0.00 banking fee. |
Guarantees
1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.
2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.
Packing
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All the products will packing in anti-staticbag. Ship with ESD antistatic protection.
Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.
We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.
After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.
Part points
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The L4981BD chip is a power factor correction integrated circuit (IC) that is designed for high-efficiency offline converters. It operates as a controller for boost, flyback, and SEPIC power factor correction (PFC) converters. The chip incorporates a range of features including overvoltage protection, brownout protection, and a synchronizable frequency oscillator. Overall, the L4981BD chip is used to improve power factor and efficiency in AC-DC power supplies.
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Equivalent
Some equivalent products to the L4981BD chip include the L4981A, the ST’s L4981AD, and the NCP1601B. -
Features
The L4981BD is a PWM current-mode controller specifically designed for high-efficiency off-line converters. It features a built-in soft-start, a frequency jittering for EMI reduction, and overvoltage and overcurrent protections. The device operates in the Quasi-resonant mode to increase efficiency and minimize switching losses. -
Pinout
The L4981BD is a PWM current-mode controller IC. It has a pin count of 16 pins. The functions of the pins include power and ground connections, feedback and error amplifier inputs, soft-start and shutdown controls, oscillator timing, and gate drive outputs. -
Manufacturer
The manufacturer of the L4981BD is STMicroelectronics. STMicroelectronics is a multinational semiconductor company that designs, develops, and manufactures a wide range of electronic components and systems. The company specializes in areas such as power management, microcontrollers, sensors, and other integrated circuits for various applications in automotive, industrial, consumer, and communication markets. -
Application Field
The L4981BD is a high voltage primary controller IC used in offline flyback converters. It is primarily used in applications such as LED drivers, battery chargers, industrial power supplies, and auxiliary power supplies. It offers a wide input voltage range and a variety of protection features, making it suitable for various power conversion applications. -
Package
The L4981BD chip comes in a TO-252 package type, also known as DPAK. The form factor is surface mount. The size of the chip is typically 6.5mm x 6.1mm.
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