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$5000ST UC3844BD1
Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-SOIC
Brands: STMicroelectronics, Inc
Mfr.Part #: UC3844BD1
Datasheet: UC3844BD1 Datasheet (PDF)
Package/Case: SO-8
Product Type: DC DC Switching Controllers
RoHS Status:
Stock Condition: 3,587 pcs, New Original
Warranty: 1 Year Ovaga Warranty - Find Out More
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UC3844BD1 General Description
The UC3844BD1 is a versatile control IC that is part of the UC284xB family, offering a range of features for implementing off-line or DC to DC fixed frequency current mode control schemes with minimal additional components. The internal circuits of this IC include a trimmed oscillator for precise duty cycle control, under voltage lockout with a low start-up current, a precision reference for accurate error amp input, logic for latched operation, a PWM comparator for current limit control, and a totem pole output stage capable of sourcing or sinking high peak current. The output stage is designed for driving N-Channel MOSFETs and has low off-state characteristics
Features
- Undervoltage lockout for safe and reliable operation
- Shutdown function for fault tolerance and protection
- Error amplifier with high gain bandwidth for stability
- Tight tolerance voltage reference for precision control
Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Manufacturer: | STMicroelectronics | Product Category: | Switching Controllers |
| RoHS: | Y | Topology: | Boost, Flyback |
| Number of Outputs: | 1 Output | Switching Frequency: | 500 kHz |
| Duty Cycle - Max: | 50 % | Output Voltage: | 4.90 V to 5.10 V |
| Output Current: | 1000 mA | Minimum Operating Temperature: | - 40 C |
| Maximum Operating Temperature: | + 150 C | Mounting Style: | SMD/SMT |
| Package / Case: | SO-8 | Packaging: | Tube |
| Series: | UC3844B | Type: | Current Mode PWM Controllers |
| Brand: | STMicroelectronics | Fall Time: | 50 ns |
| Operating Supply Voltage: | 30 V | Product Type: | Switching Controllers |
| Rise Time: | 50 ns | Factory Pack Quantity: | 2000 |
| Subcategory: | PMIC - Power Management ICs | Unit Weight: | 0.017870 oz |
| Tags | UC3844BD1, UC3844BD, UC3844B, UC3844, UC384, UC38, UC3 | feature-type | Current Mode PWM Controller |
| feature-maximum-power-dissipation-mw | 702 | feature-packaging | Rail |
| feature-rad-hard | feature-pin-count | 8 | |
| feature-supplier-package | SOIC N | feature-standard-package-name1 | SO |
| feature-cecc-qualified | No | feature-esd-protection | Yes |
| feature-military | No | feature-aec-qualified | No |
| feature-aec-qualified-number | feature-auto-motive | No | |
| feature-p-pap | No | feature-eccn-code | EAR99 |
| feature-svhc | Yes |
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 | |
|---|---|---|
 |
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 UC3844BD1 is a high-performance voltage mode controller IC used in switched-mode power supplies. It offers adjustable frequency operation, soft-start capability, and overcurrent protection. This versatile chip is commonly used in applications such as DC-DC converters, battery chargers, and LED drivers.
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Equivalent
The equivalent products of UC3844BD1 chip are UC3844, UC3844A, UC3844B, and UC3844C. These chips are all controllers for power supply circuits with similar features and specifications. -
Features
1. Current mode PWM controller 2. Operating frequency up to 500 kHz 3. Adjustable active low COMP pin 4. Output voltage precision within ±1% 5. Adjustable soft-start operation for improved stability 6. Overcurrent protection and thermal shutdown 7. D1 package with enhanced thermal performance -
Pinout
UC3844BD1 is a PWM controller with a built-in driver. It has an 8-pin DIP package and its functions include providing constant voltage or constant current regulation for power supplies, battery chargers, and LED drivers. It has a feedback pin, a ground pin, an output pin, an input pin, and other pins for power supply and regulation. -
Manufacturer
UC3844BD1 is manufactured by STMicroelectronics, a multinational semiconductor company. STMicroelectronics is a leading supplier of semiconductor solutions serving customers across various sectors such as automotive, industrial, consumer electronics, and telecommunications. The company focuses on innovation and sustainability to deliver cutting-edge products to its customers worldwide. -
Application Field
UC3844BD1 is commonly used in switch-mode power supply applications such as DC-DC converters, buck converters, boost converters, and flyback converters. It is also utilized in battery charging circuits, LED lighting drivers, and motor control systems. Its versatile features make it suitable for various power management applications. -
Package
The UC3844BD1 chip is a surface-mounted DIP-8 package type. It comes in a tube form, and its size is 6.6mm x 10mm x 2.5mm.
Datasheet PDF
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