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UC3843AD
Designed for various applications requiring precision control of power output
Brands: Texas Instruments
Mfr.Part #: UC3843AD
Datasheet: UC3843AD Datasheet (PDF)
Package/Case: SOIC (D)-14
RoHS Status:
Stock Condition: 8467 pcs, New Original
Product Type: Switching Controllers
Warranty: 1 Year Ovaga Warranty - Find Out More
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*All prices are in USD
| Qty | Unit Price | Ext Price |
|---|---|---|
| 1 | $3.116 | $3.116 |
| 200 | $1.207 | $241.400 |
| 500 | $1.163 | $581.500 |
| 1000 | $1.143 | $1143.000 |
In Stock:8467 PCS
UC3843AD General Description
The UC3843AD is a high-performance current mode PWM controller designed for applications requiring high-efficiency power conversion. It operates over a wide input voltage range of 7V to 30V, making it suitable for a variety of power supply designs. The device features an internal oscillator that can be programmed with an external resistor and capacitor, allowing for flexibility in frequency selection. It also includes a precision reference voltage and error amplifier to ensure stable regulation of the output voltage.The UC3843AD offers adjustable current limiting and a pulse-by-pulse current limiting scheme to protect the power MOSFET and other components from overcurrent conditions. It also provides overvoltage protection, thermal shutdown, and undervoltage lockout for added system reliability.
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 UC3843AD is a pulse width modulation (PWM) controller used in switch-mode power supplies. It provides adjustable output voltage regulation and controls the duty cycle of the power transistor to maintain the desired output voltage. The chip is commonly used in various applications including LED drivers, battery chargers, and DC-DC converters.
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Equivalent
The UC3843AD chip is part of the UC3843 series of fixed-frequency PWM controllers. Equivalent products include UC3843B, UC2843AD, and UC2843A, which offer similar functionality and are suitable replacements for the UC3843AD in various power supply applications. -
Features
The UC3843AD is a high-performance, fixed-frequency current mode controller with advanced protection features. It operates on a voltage range of 7V to 25V, has a 1A totem pole output, and a duty cycle range of 0% to 100%. Additional features include adjustable soft-start, overvoltage protection, and short circuit protection. -
Pinout
The UC3843AD is a pulse width modulation (PWM) controller IC. It has 8 pins in total. The pin functions of UC3843AD are: Pin 1 (Output), Pin 2 (Latch), Pin 3 (Internal reference), Pin 4 (Compensation), Pin 5 (Error Amplifier), Pin 6 (Ground), Pin 7 (Soft Start/Shutdown), and Pin 8 (VCC). -
Manufacturer
The UC3843AD is manufactured by Texas Instruments (TI). Texas Instruments is a multinational semiconductor company specializing in the design and production of various integrated circuits and semiconductor devices. They offer a wide range of products for various industries including automotive, industrial, personal electronics, and communications. -
Application Field
The UC3843AD is a versatile PWM controller commonly used in various power supply applications such as offline and DC-DC converters, battery chargers, and LED drivers. It provides precise control over the switching frequency and duty cycle, ensuring efficient power conversion and regulation. -
Package
The UC3843AD chip is packaged in a 14-pin Dual In-Line Package (DIP) form. The package size of the chip is approximately 9.9 mm x 6.6 mm.
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