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ON UC2843BD1R2G
Switching Controllers 52kHz 1A Current PWM w/96% Duty Cycle Ma
Brands: ON Semiconductor, LLC
Mfr.Part #: UC2843BD1R2G
Datasheet: UC2843BD1R2G Datasheet (PDF)
Package/Case: SOIC-8
Product Type: Power Management ICs
UC2843BD1R2G 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: | 4.95 V to 5.05 V |
| Output Current: | 1 A | Minimum Operating Temperature: | - 25 C |
| Maximum Operating Temperature: | + 85 C | Mounting Style: | SMD/SMT |
| Package / Case: | SOIC-8 | Packaging: | Reel |
| Series: | UC2843B | 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 | UC2843BD1R2G, UC2843BD1R, UC2843BD1, UC2843BD, UC2843B, UC2843, UC284, UC28, UC2 | Source Content uid | UC2843BD1R2G |
| Pbfree Code | Yes | Part Life Cycle Code | Active |
| Ihs Manufacturer | ONSEMI | Part Package Code | SOIC-8 Narrow Body |
| Pin Count | 8 | Manufacturer Package Code | 751-07 |
| Reach Compliance Code | compliant | ECCN Code | EAR99 |
| HTS Code | 8542.39.00.01 | Factory Lead Time | 4 Weeks |
| Samacsys Manufacturer | onsemi | Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE | Control Technique | PULSE WIDTH MODULATION |
| JESD-30 Code | R-PDSO-G8 | Moisture Sensitivity Level | 1 |
| Number of Functions | 1 | Number of Terminals | 8 |
| Package Body Material | PLASTIC/EPOXY | Package Code | SOP |
| Package Equivalence Code | TSOP8,.25 | Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE | Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES | Switcher Configuration | BUCK-BOOST |
| Technology | BIPOLAR | Temperature Grade | OTHER |
| Terminal Finish | MATTE TIN | Terminal Form | GULL WING |
| Terminal Position | DUAL |
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 UC2843BD1R2G chip is an integrated circuit that belongs to the UCx84x family of PWM controllers. It is specifically designed for controlling power electronics applications such as switch-mode power supplies. The chip offers various features like adjustable frequency operation, precise regulation, and cycle-by-cycle current limit. With its compact size and advanced functionality, the UC2843BD1R2G chip provides efficient and reliable control for power conversion systems.
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Equivalent
Some equivalent products of the UC2843BD1R2G chip include the UC2843D8, UC2843DTRG4, UC2843D1, and UC2843AD8. These chips are similar in performance and functionality, and can be used as alternatives to the UC2843BD1R2G. -
Features
The UC2843BD1R2G is a high-performance, current-mode PWM controller with integrated features such as a fixed frequency oscillator, error amplifier, precision reference, and a high-current totem pole output. It offers excellent line and load regulation, as well as adjustable frequency and soft-start capabilities. -
Pinout
The UC2843BD1R2G is a 8-pin PWM controller IC. It is used in power supply applications to regulate the output voltage. The pin functions are as follows: Pin 1 (CS) is the current sense input, Pin 2 (GND) is the ground connection, Pin 3 (VFB) is the feedback voltage input, Pin 4 (Output) is the output voltage, Pin 5 (VCC) is the supply voltage input, Pin 6 (RT/CT) is the timing resistor (RT) or timing capacitor (CT) connection, Pin 7 (RT/CT) is the timing resistor (RT) or timing capacitor (CT) connection, and Pin 8 (Comp) is the compensation capacitor connection. -
Manufacturer
The UC2843BD1R2G is manufactured by ON Semiconductor. ON Semiconductor is a multinational company that designs and produces a wide range of semiconductor devices, including power management chips like the UC2843BD1R2G. The company's products are used in various industries, including automotive, consumer electronics, industrial, and medical. -
Application Field
The UC2843BD1R2G is a pulse width modulation (PWM) controller IC that is commonly used in switch mode power supplies (SMPS) and battery chargers. It is designed for applications that require a regulated output voltage, such as power adapters, LED drivers, and automotive electronics. Additionally, it can be used in industrial control systems, telecommunications equipment, and other low power applications. -
Package
The UC2843BD1R2G chip is available in a SOIC-8 package with a narrow body (D) and a tape and reel packaging. The chip's dimensions are approximately 6.2 mm x 4.9 mm x 1.75 mm.
Datasheet PDF
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