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ST UC3843BD1013TR
Switching Controllers 0.5mA Current Mode
Brands: ST
Mfr.Part #: UC3843BD1013TR
Datasheet: UC3843BD1013TR Datasheet (PDF)
Package/Case: SOP8
RoHS Status:
Stock Condition: 2597 pcs, New Original
Product Type: Power Management ICs
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*All prices are in USD
| Qty | Unit Price | Ext Price |
|---|---|---|
| 1 | $0.432 | $0.432 |
| 10 | $0.352 | $3.520 |
| 30 | $0.317 | $9.510 |
| 100 | $0.273 | $27.300 |
| 500 | $0.236 | $118.000 |
| 1000 | $0.225 | $225.000 |
In Stock:2597 PCS
UC3843BD1013TR General Description
The UC284xB family of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockout featuring start-up current less than 0.5mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off-state.Differences between members of this family are the under-voltage lockout thresholds and maximum duty cycle ranges. The UC2842B and UC2844B have UVLO thresholds of 16V (on) and 10V (off), ideally suited off-line applications The corresponding thresholds for the UC2843B and UC2845B are 8.5V and 7.9V. The UC2842B and UC2843B can operate to duty cycles approaching 100%. A range of the zero to < 50 % is obtained by the UC2844B and UC2845B by the addition of an internal toggle flip flop which blanks the output off every other clock cycle.
Features
- LOW START-UP AND OPERATING CURRENT
- UNDERVOLTAGE LOCKOUT WITH HYSTERESIS
- INTERNALLY TRIMMED REFERENCE WITH UNDERVOLTAGE LOCKOUT
- CURRENT LIMITING
- TRIMMED OSCILLATOR FOR PRECISE FREQUENCY CONTROL
- CURRENT MODE OPERATION TO 500kHz
- OSCILLATOR FREQUENCY GUARANTEED AT 250kHz
- LATCHING PWM FOR CYCLE-BY-CYCLE
- HIGH CURRENT TOTEM POLE OUTPUT
- AUTOMATIC FEED FORWARD COMPENSATION
Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| ECCN US | EAR99 | ECCN EU | NEC |
| Packing Type | Tape And Reel | RoHs compliant | Ecopack2 |
| Grade | Industrial |
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 UC3843BD1013TR chip is an integrated circuit (IC) designed for use in switch mode power supplies. It is a high-performance current mode controller that provides various protection features and control functions. With its compact size and reliable performance, the chip is widely used in applications such as voltage regulators, battery chargers, and LED drivers.
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Equivalent
Some equivalent products of the UC3843BD1013TR chip are IR3843APBF, SG3843M, and LM3843. -
Features
The UC3843BD1013TR is an integrated circuit that serves as a high-performance current mode PWM controller. It offers various features, including an adjustable frequency range of up to 500kHz, internal soft-start, precision reference voltage, and built-in oscillator. It also provides protection functions such as cycle-by-cycle current limiting and undervoltage lockout. -
Pinout
The UC3843BD1013TR is a 14-pin integrated circuit (IC) chip. It is a current-mode PWM controller used in switch-mode power supplies. It provides functions such as voltage feedback, error amplification, and PWM signal generation. The specific pin functions are as follows: 1. Output Control 2. Current Sense Input 3. Compensation Output 4. Voltage Reference 5. Feedback Input 6. Ground 7. Oscillator Timing capacitor 8. Oscillator Timing resistor 9. Oscillator Discharge 10. Current Sense Output 11. Error Amplifier Inverting Input 12. Error Amplifier Non-Inverting Input 13. Error Amplifier Output 14. Power Supply Input. -
Manufacturer
The manufacturer of the UC3843BD1013TR is STMicroelectronics. It is a multinational semiconductor company that designs and manufactures a wide range of electronic components, including microcontrollers, power management integrated circuits (ICs), sensors, and more. -
Application Field
The UC3843BD1013TR is a PWM controller IC commonly used in voltage mode control of step-down and step-up converters, battery chargers, and power supplies. Its application areas include industrial power supplies, consumer electronics, LED drivers, and automotive applications. -
Package
The UC3843BD1013TR chip is available in a SOIC-8 package type, with a form factor of a small-outline integrated circuit. The size of the chip is approximately 3.9mm x 4.9mm.
Datasheet PDF
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