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UC3843AD8
Operating temperature: 0°C to 70°C
Brands: Texas Instruments
Mfr.Part #: UC3843AD8
Datasheet: UC3843AD8 Datasheet (PDF)
Package/Case: SOIC (D)-8
Product Type: Switching Controllers
RoHS Status:
Stock Condition: 6305 pcs, New Original
Warranty: 1 Year Ovaga Warranty - Find Out More
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The UC3843AD8 is an integrated circuit (IC) containing a voltage mode PWM controller. It is commonly used in power supply applications to regulate the output voltage by adjusting the duty cycle of the PWM signal. The UC3843AD8 operates over a wide voltage range of 7V to 35V and can deliver a maximum output current of 1A. This IC features a precision reference voltage of 5V, making it suitable for applications requiring high accuracy voltage regulation. It also includes built-in frequency compensation and soft-start functions to ensure stable and efficient operation. The UC3843AD8 is designed to drive an external power MOSFET for switching power supplies, making it a versatile solution for various power management applications. It is available in an 8-pin dual in-line package (DIP), making it easy to integrate into existing designs.
Features
Application
Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Topology | Boost, Buck, Flyback, Forward | Control mode | Current |
| Duty cycle (max) (%) | 100 | Switching frequency (max) (kHz) | 500 |
| Features | Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Multi-topology | UVLO thresholds on/off (V) | 8.4/7.6 |
| Operating temperature range (°C) | 0 to 70 | Rating | Catalog |
| Gate drive (typ) (A) | 1 |
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 UC3843AD8 is a pulse-width modulation (PWM) controller IC commonly used in switch-mode power supplies. It regulates voltage levels by controlling the duty cycle of the power switching circuit. It is designed for high-performance applications, offering precise control and protection features.
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Equivalent
The equivalent products of UC3843AD8 chip are UC3843A, UC3843B, UC3844A, UC3844B, UC3845A, and UC3845B. These chips are designed for controlling power converters and motor controllers, offering a variety of features and specifications for different applications. -
Features
UC3843AD8 is a high performance current-mode PWM controller that is suitable for off-line and DC to DC converters. It features internal pulse-by-pulse current limiting, frequency modulation, programmable soft-start, and under-voltage lockout functionality. It has an operating temperature range of -40°C to +105°C and is available in an 8-pin SOIC package. -
Pinout
The UC3843AD8 is an 8-pin IC voltage mode PWM controller with an error amplifier, bandgap reference, oscillator, current limit circuit, and output driver. It is commonly used in switch-mode power supplies. Pin functions include VCC, error amplifier input, oscillator, PWM output, ground, and current sense input. -
Manufacturer
The UC3843AD8 is manufactured by Texas Instruments, an American semiconductor company specializing in designing and manufacturing analog chips and embedded processors for a variety of applications, including power management, industrial automation, and consumer electronics. -
Application Field
The UC3843AD8 is commonly used in switching power supply applications, such as AC-DC adapters, LED drivers, battery chargers, and voltage regulators. It is also suitable for use in flyback, forward, and buck-boost converters, making it a versatile choice for numerous power management applications. -
Package
The UC3843AD8 chip is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) package. It is in a surface-mount form and has a size of 5.80mm x 6.20mm x 1.75mm.
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