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ON UC3843BVD1R2G
Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-SOIC
Brands: ON Semiconductor, LLC
Mfr.Part #: UC3843BVD1R2G
Datasheet: UC3843BVD1R2G Datasheet (PDF)
Package/Case: SOP-8
Product Type: Power Management ICs
UC3843BVD1R2G General Description
The UC3842B, UC3843B series are high performance fixed frequency current mode controllers. They are specifically designed for Off-Line and dc-to-dc converter applications offering the designer a cost-effective solution with minimal external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.
Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle-by-cycle current limiting, programmable output deadtime, and a latch for single pulse metering.
These devices are available in an 8-pin dual-in-line and surface mount (SO-8) plastic package as well as the 14-pin plastic surface mount (SO-14). The SO-14 package has separate power and ground pins for the totem pole output stage.
The UCX842B has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off-line converters. The UCX843B is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).
Features
- Trimmed Oscillator for Precise Frequency Control
- Oscillator Frequency Guaranteed at 250 kHz
- Current Mode Operation to 500 kHz
- Automatic Feed Forward Compensation
- Latching PWM for Cycle-By-Cycle Current Limiting
- Internally Trimmed Reference with Undervoltage Lockout
- High Current Totem Pole Output
- Undervoltage Lockout with Hysteresis
- Low Startup and Operating Current
- Pb-Free Packages are Available
Application
ONSEMISpecifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Manufacturer: | ON Semiconductor | Product Category: | Switching Controllers |
| RoHS: | Y | Topology: | Boost, Flyback, Forward |
| Number of Outputs: | 1 Output | Switching Frequency: | 500 kHz |
| Duty Cycle - Max: | 96 % | Output Voltage: | 4.9 V to 5.1 V |
| Output Current: | 1 A | Minimum Operating Temperature: | - 40 C |
| Maximum Operating Temperature: | + 105 C | Mounting Style: | SMD/SMT |
| Package / Case: | SOIC-8 | Packaging: | Reel |
| Series: | UC3843B | Type: | Current Mode PWM Controllers |
| Brand: | ON Semiconductor | Fall Time: | 50 ns |
| Operating Supply Voltage: | 30 V | Product Type: | Switching Controllers |
| Rise Time: | 50 ns | Factory Pack Quantity: | 2500 |
| Subcategory: | PMIC - Power Management ICs | Unit Weight: | 0.019048 oz |
| Tags | UC3843BVD1R2G, UC3843BVD1R2, UC3843BVD1R, UC3843BVD1, UC3843BVD, UC3843BV, UC3843B, UC3843, UC384, UC38, UC3 |
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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Step1 :Product
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Step2 :Vacuum packaging
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Step3 :Anti-static bag
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Step4 :Individual packaging
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Step5 :Packaging boxes
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Step6 :bar-code shipping tag
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 UC3843BVD1R2G is a chip that is commonly known as a pulse-width modulation (PWM) controller. It is often used in power supply applications to control the switching of power transistors. The chip is designed to provide precise and adjustable control of the duty cycle, making it useful in various voltage regulation applications. It is known for its high accuracy, efficiency, and reliability.
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Equivalent
Some equivalent products to the UC3843BVD1R2G chip include UC3843A, UC3843AD1R2G, and UC3843B. These chips are all part of the UC3843 series and share similar characteristics and functionalities. They can be used as substitutes depending on the specific requirements of the application. -
Features
The UC3843BVD1R2G is a current mode PWM controller with a fixed frequency oscillator that provides closed loop control for switching power supplies. It features an 8.4V reference, error amplifier, oscillator, PWM comparator, and a totem-pole output stage. This device is highly efficient and has a wide range of applications in power supply designs. -
Pinout
The UC3843BVD1R2G is a pulse width modulation (PWM) controller IC. It has 8 pins and the functions of each pin are as follows: 1. Vref: Voltage reference input 2. Output: PWM output 3. Compensation: Feedback compensation for voltage control loop 4. VFB: Voltage feedback input 5. GND: Ground 6. CS: Current sense input 7. VCC: Power supply input 8. UVLO: Undervoltage lockout input/Enable input -
Manufacturer
The manufacturer of the UC3843BVD1R2G is ON Semiconductor. ON Semiconductor is a multinational semiconductor company that specializes in manufacturing and distributing a wide range of semiconductors and integrated circuits for various applications, including power management, sensors, connectivity, and more. -
Application Field
The UC3843BVD1R2G is a pulse width modulation (PWM) controller IC commonly used in power supply applications. Its main application areas include switch-mode power supplies (SMPS), battery charging circuits, LED drivers, and motor control. It provides adjustable, stable, and efficient control of the power supply output voltage. -
Package
The UC3843BVD1R2G chip is available in a SOIC-8 package.
Datasheet PDF
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