| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| UC3845BD1013TR | STMicroelectronics | $0.3471 | Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8 | UC3845BD1 vs UC3845BD1013TR |
| TL3845DRG4-8 | Texas Instruments | Check for Price | Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8 | UC3845BD1 vs TL3845DRG4-8 |
| UC3845AD1013TR | STMicroelectronics | Check for Price | Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8 | UC3845BD1 vs UC3845AD1013TR |
| UC3845ADM | Microsemi Corporation (now Microchip) | Check for Price | Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8 | UC3845BD1 vs UC3845ADM |
| UC3845ADM-TR | Microsemi Corporation (now Microchip) | Check for Price | Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8 | UC3845BD1 vs UC3845ADM-TR |
| UC3845ADM | Microchip Technology Inc | Check for Price | Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8 | UC3845BD1 vs UC3845ADM |
| UC3845ADMT | Microsemi Corporation (now Microchip) | Check for Price | Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, PDSO8 | UC3845BD1 vs UC3845ADMT |
Part Details for UC3845BD1 by STMicroelectronics
Results Overview of UC3845BD1 by STMicroelectronics
- Distributor Offerings: (7 listings)
- Number of FFF Equivalents: (7 replacements)
- Tariff Estimator: (Available) NEW
- Number of Functional Equivalents: (10 options)
- CAD Models: (Available)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
Applications
Consumer Electronics
Energy and Power Systems
Renewable Energy
UC3845BD1 Information
UC3845BD1 by STMicroelectronics is a Switching Regulator or Controller.
Switching Regulator or Controllers are under the broader part category of Power Circuits.
A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.
Price & Stock for UC3845BD1
| Part # | Distributor | Description | Stock | Price | Buy | |
|---|---|---|---|---|---|---|
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DISTI #
45AC7924
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Newark | Pwm Controller, 500Khz, 15V, Soic-8, |Stmicroelectronics UC3845BD1 RoHS: Compliant Min Qty: 1 Package Multiple: 1 Date Code: 0 Container: Bulk | 685 |
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$0.4870 / $1.5500 | Buy Now |
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DISTI #
497-18662-ND
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DigiKey | IC REG CTRLR BOOST/FLYBACK 8SO Min Qty: 1 Container: Tube |
1333 Tube |
|
$0.8335 / $1.7000 | Buy Now |
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DISTI #
511-UC3845BD1
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Mouser Electronics | Switching Controllers PWM CONTROLLER RoHS: Compliant | 391 |
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$0.7900 / $1.7000 | Buy Now |
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STMicroelectronics | Current Mode PWM COO: Singapore Min Qty: 1 | 387 |
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$0.9100 / $1.7000 | Buy Now |
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Quest Components | SWITCHING CONTROLLER, CURRENT-MODE, 1A, 500KHZ SWITCHING FREQ-MAX, BIPOLAR, PDSO8 | 10 |
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$0.5550 / $0.6660 | Buy Now |
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DISTI #
UC3845BD1
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TME | IC: PMIC, PWM controller, 1A, 48÷500kHz, Ch: 1, SO8, boost,flyback Min Qty: 1 | 492 |
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$0.8000 / $1.2000 | Buy Now |
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ComSIT USA | HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8 ECCN: EAR99 RoHS: Compliant |
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RFQ |
US Tariff Estimator: UC3845BD1 by STMicroelectronics
Calculations from this tool are estimations only for imports into the United States. Please refer to the distributor or manufacturer and reference official US government sources and authorities to verify any final purchase costs.
UC3845BD1 CAD Models
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UC3845BD1 Part Data Attributes
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UC3845BD1
STMicroelectronics
Buy Now
Datasheet
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UC3845BD1
STMicroelectronics
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8
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| Rohs Code | Yes | |
| Part Life Cycle Code | Active | |
| Part Package Code | SOIC | |
| Package Description | Sop, Sop8,.25 | |
| Pin Count | 8 | |
| Reach Compliance Code | Compliant | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.60 | |
| Factory Lead Time | 14 Weeks | |
| Analog IC - Other Type | Switching Controller | |
| Control Mode | Current-Mode | |
| Control Technique | Pulse Width Modulation | |
| Input Voltage-Max | 30 V | |
| Input Voltage-Min | 8.2 V | |
| Input Voltage-Nom | 15 V | |
| JESD-30 Code | R-PDSO-G8 | |
| JESD-609 Code | e4 | |
| Length | 4.9 Mm | |
| Moisture Sensitivity Level | 1 | |
| Number of Functions | 1 | |
| Number of Terminals | 8 | |
| Operating Temperature-Max | 70 °C | |
| Operating Temperature-Min | ||
| Output Current-Max | 1 A | |
| 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 | |
| Qualification Status | Not Qualified | |
| Seated Height-Max | 1.75 Mm | |
| Surface Mount | Yes | |
| Switcher Configuration | Single | |
| Switching Frequency-Max | 500 Khz | |
| Technology | Bipolar | |
| Temperature Grade | Commercial | |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | |
| Terminal Form | Gull Wing | |
| Terminal Pitch | 1.27 Mm | |
| Terminal Position | Dual | |
| Time@Peak Reflow Temperature-Max (s) | 30 | |
| Width | 3.9 Mm |
Alternate Parts for UC3845BD1
This table gives cross-reference parts and alternative options found for UC3845BD1. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of UC3845BD1, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
UC3845BD1 Frequently Asked Questions (FAQ)
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The recommended operating voltage range for UC3845BD1 is 12V to 28V, with a maximum rating of 30V.
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The oscillator circuit requires two resistors, R1 and R2. Choose R1 to be around 1kΩ to 10kΩ, and R2 to be around 10kΩ to 100kΩ. The ratio of R1 to R2 determines the oscillator frequency.
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The soft-start pin (SS) is used to gradually increase the output voltage during startup, reducing inrush currents. Connect a capacitor (typically 10nF to 100nF) from the SS pin to ground, and a resistor (typically 1kΩ to 10kΩ) from the SS pin to the output voltage.
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The maximum duty cycle is set by the ratio of the resistors R3 and R4 in the feedback circuit. A higher ratio of R3 to R4 increases the maximum duty cycle.
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The undervoltage lockout (UVLO) is a feature that prevents the IC from operating below a certain voltage threshold (typically around 8.5V). This is to prevent the IC from malfunctioning or drawing excessive current during startup or brownout conditions.