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ON UC3843BD1G
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 #: UC3843BD1G
Datasheet: UC3843BD1G Datasheet (PDF)
Package/Case: SOP-8
RoHS Status:
Stock Condition: 2260 pcs, New Original
Product Type: Power Management ICs
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*All prices are in USD
| Qty | Unit Price | Ext Price |
|---|---|---|
| 1 | $0.496 | $0.496 |
| 10 | $0.399 | $3.990 |
| 30 | $0.357 | $10.710 |
| 98 | $0.305 | $29.890 |
| 490 | $0.282 | $138.180 |
| 980 | $0.267 | $261.660 |
In Stock:2260 PCS
UC3843BD1G 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: | 0 C |
| Maximum Operating Temperature: | + 70 C | Mounting Style: | SMD/SMT |
| Package / Case: | SOIC-8 | Packaging: | Tube |
| 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: | 98 |
| Subcategory: | PMIC - Power Management ICs | Unit Weight: | 0.019048 oz |
| Tags | UC3843BD1, UC3843BD, UC3843B, UC3843, UC384, UC38, UC3 | Source Content uid | UC3843BD1G |
| 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 | 24 Weeks, 4 Days |
| 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 | SOP8,.25 | Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE | Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES | Switcher Configuration | BUCK-BOOST |
| Technology | BIPOLAR | Temperature Grade | COMMERCIAL |
| 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 UC3843BD1G chip is a pulse width modulation (PWM) controller integrated circuit (IC) designed for use in regulating power supplies. It features a totem pole output stage to drive power MOSFETs or IGBTs, enhanced load response characteristics, feedback voltage soft start, and internally trimmed reference with undervoltage lockout. This chip is commonly used in various applications including DC-DC converters, battery chargers, and LED drivers.
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Equivalent
There are several equivalent products to the UC3843BD1G chip, including the UC3842, UC3843A, UC3844A, and UC3845A. These chips are all part of the UC384x family and can be used as substitutes for the UC3843BD1G chip in various applications. -
Features
The UC3843BD1G is a high-performance current mode PWM controller with an integrated high-voltage startup circuit. It features a voltage reference, an error amplifier, an oscillator, a pulse-by-pulse current limit, a soft-start circuit, and output drivers for both push-pull or single-ended operation. -
Pinout
The UC3843BD1G has 8 pins. Pin 1 is the Output Control Pin, pin 2 is the Compensation Pin, pin 3 is the Current Sense Pin, pin 4 is the PWM Comparator Input, pin 5 is the Ground Pin, pin 6 is the Error Amplifier Output, pin 7 is the VCC Pin, and pin 8 is the Feedback Input Pin. -
Manufacturer
The manufacturer of the UC3843BD1G is ON Semiconductor. It is a multinational semiconductor supplier company that designs and produces a wide range of electronic components and devices for various industries. -
Application Field
The UC3843BD1G is a pulse width modulation (PWM) controller used in various applications such as DC-DC converters, power supplies, and battery chargers. It is commonly used in lighting systems, industrial control systems, automotive electronics, and telecommunications equipment. -
Package
The UC3843BD1G chip is available in a standard SOIC-8 package, which stands for Small Outline Integrated Circuit. The chip comes in a form of an 8-pin surface mount package.
Datasheet PDF
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