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Part Details for UC3845D8TRG4 by Texas Instruments
Results Overview of UC3845D8TRG4 by Texas Instruments
- Distributor Offerings: (4 listings)
- Number of FFF Equivalents: (1 replacement)
- CAD Models: (Available)
- Number of Functional Equivalents: (10 options)
- 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
UC3845D8TRG4 Information
UC3845D8TRG4 by Texas Instruments 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 UC3845D8TRG4
| Part # | Distributor | Description | Stock | Price | Buy | |
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DISTI #
595-UC3845D8TRG4
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Mouser Electronics | Switching Controllers Current-Mode PWM Con troller ALT 595-UC3845D8TR RoHS: Compliant | 1646 |
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$0.3430 / $1.6000 | Buy Now |
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Cytech Systems Limited | IC REG CTRLR MULT TOPOLOGY 8SOIC | 625 |
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RFQ | |
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Vyrian | Other Function Semiconductors | 1259 |
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RFQ | |
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Win Source Electronics | IC REG CTRLR MULT TOPOLOGY 8SOIC | 11400 |
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$0.5544 / $0.7161 | Buy Now |
Part Details for UC3845D8TRG4
UC3845D8TRG4 CAD Models
UC3845D8TRG4 Part Data Attributes
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UC3845D8TRG4
Texas Instruments
Buy Now
Datasheet
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Compare Parts:
UC3845D8TRG4
Texas Instruments
Single ended 500KHz current mode PWM controller with 8.4V/7.6V UVLO 50% duty cycle, 0C to 70C 8-SOIC 0 to 70
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| Pbfree Code | Yes | |
| Rohs Code | Yes | |
| Part Life Cycle Code | Active | |
| Ihs Manufacturer | TEXAS INSTRUMENTS INC | |
| Part Package Code | SOIC | |
| Package Description | GREEN, PLASTIC, MS-012AA, SOIC-8 | |
| Pin Count | 8 | |
| Reach Compliance Code | compliant | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.01 | |
| Samacsys Manufacturer | Texas Instruments | |
| Analog IC - Other Type | SWITCHING CONTROLLER | |
| Control Mode | CURRENT-MODE | |
| Control Technique | PULSE WIDTH MODULATION | |
| Input Voltage-Max | 28 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 | |
| Output Voltage-Nom | 5 V | |
| 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 | |
| Supply Current-Max (Isup) | 25 mA | |
| Supply Voltage-Max (Vsup) | 28 V | |
| Supply Voltage-Min (Vsup) | 8.4 V | |
| Surface Mount | YES | |
| Switcher Configuration | BUCK-BOOST | |
| Switching Frequency-Max | 500 kHz | |
| Technology | BICMOS | |
| 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 UC3845D8TRG4
This table gives cross-reference parts and alternative options found for UC3845D8TRG4. 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 UC3845D8TRG4, 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.
| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| UC3845D8G4 | Texas Instruments | Check for Price | Single ended 500KHz current mode PWM controller with 8.4V/7.6V UVLO 50% duty cycle, 0C to 70C 8-SOIC 0 to 70 | UC3845D8TRG4 vs UC3845D8G4 |
UC3845D8TRG4 Frequently Asked Questions (FAQ)
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The UC3845D8TRG4 is a high-frequency switching regulator, and as such, it requires careful PCB design and layout to minimize noise, EMI, and parasitic inductance. TI recommends using a 4-layer PCB with a solid ground plane, separating the high-current and low-current paths, and using shielded cables for the feedback and sense lines. Additionally, the IC should be placed close to the input capacitors and the output inductor.
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The choice of external components depends on the specific application requirements, such as input voltage, output voltage, output current, and switching frequency. TI provides a detailed component selection guide in the datasheet, which includes formulas and tables to help designers select the right components. Additionally, TI's WEBENCH online design tool can be used to simplify the component selection process.
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The maximum junction temperature of the UC3845D8TRG4 is 150°C. To ensure the IC stays within the safe operating range, designers should consider the thermal resistance of the package, the PCB layout, and the ambient temperature. TI recommends using a thermal pad or heat sink to dissipate heat, and ensuring good airflow around the IC. The junction temperature can be estimated using the thermal resistance and power dissipation calculations provided in the datasheet.
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Troubleshooting the UC3845D8TRG4 requires a systematic approach, starting with a review of the schematic and PCB layout. Common issues can be caused by incorrect component values, poor PCB layout, or inadequate decoupling. TI recommends using an oscilloscope to measure the waveforms at the input, output, and feedback pins, and checking for signs of oscillation or instability. The datasheet provides a troubleshooting guide with common error conditions and their solutions.
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Yes, the UC3845D8TRG4 is compatible with lead-free soldering. TI recommends using a soldering temperature of 260°C to 280°C, with a peak temperature of 280°C for no more than 10 seconds. The IC is also compatible with reflow soldering, with a recommended peak temperature of 240°C to 250°C.