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Part Details for UC2844AQDR by Texas Instruments
Results Overview of UC2844AQDR by Texas Instruments
- Distributor Offerings: (4 listings)
- Number of FFF Equivalents: (0 replacements)
- 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
Industrial Automation
Renewable Energy
UC2844AQDR Information
UC2844AQDR 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 UC2844AQDR
| Part # | Distributor | Description | Stock | Price | Buy | |
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DISTI #
296-UC2844AQDRCT-ND
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DigiKey | IC CURR-MODE PWM CTLR 14-SOIC Min Qty: 1 Lead time: 6 Weeks Container: Cut Tape (CT), Digi-Reel®, Tape & Reel (TR) | Temporarily Out of Stock |
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$0.7002 / $1.4800 | Buy Now |
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DISTI #
595-UC2844AQDR
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Mouser Electronics | Switching Controllers Current-Mode PWM Con troller RoHS: Compliant | 4713 |
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$0.7130 / $1.4800 | Buy Now |
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Cytech Systems Limited | IC CURR-MODE PWM CTLR 14-SOIC | 7500 |
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RFQ | |
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Vyrian | Other Function Semiconductors | 2100 |
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RFQ |
Part Details for UC2844AQDR
UC2844AQDR CAD Models
UC2844AQDR Part Data Attributes
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UC2844AQDR
Texas Instruments
Buy Now
Datasheet
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Compare Parts:
UC2844AQDR
Texas Instruments
30-V, 1A, 500KHz current mode PWM controller with 16V/10V UVLO 50% duty cycle, 40°C to 85°C 14-SOIC -40 to 125
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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 | PLASTIC, MS-012AB, SOIC-14 | |
| Pin Count | 14 | |
| 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 | 12 V | |
| Input Voltage-Nom | 15 V | |
| JESD-30 Code | R-PDSO-G14 | |
| JESD-609 Code | e4 | |
| Length | 8.65 mm | |
| Moisture Sensitivity Level | 1 | |
| Number of Functions | 1 | |
| Number of Terminals | 14 | |
| Operating Temperature-Max | 125 °C | |
| Operating Temperature-Min | -40 °C | |
| Output Current-Max | 1 A | |
| Output Voltage-Max | 5.05 V | |
| Output Voltage-Min | 4.95 V | |
| Output Voltage-Nom | 5 V | |
| Package Body Material | PLASTIC/EPOXY | |
| Package Code | SOP | |
| Package Equivalence Code | SOP14,.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) | 16 V | |
| Supply Voltage-Nom (Vsup) | 11 V | |
| Surface Mount | YES | |
| Switcher Configuration | BUCK-BOOST | |
| Switching Frequency-Max | 500 kHz | |
| Technology | BIPOLAR | |
| Temperature Grade | AUTOMOTIVE | |
| 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 UC2844AQDR
This table gives cross-reference parts and alternative options found for UC2844AQDR. 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 UC2844AQDR, 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 |
|---|---|---|---|---|
| 5962-8951101EX | Unitrode Corporation | Check for Price | Switching Controller, Voltage-mode, 0.5A, 500kHz Switching Freq-Max, BIPolar, CDIP16, DIP-16 | UC2844AQDR vs 5962-8951101EX |
| SG1525AJ-883B | Microchip Technology Inc | Check for Price | Switching Regulator, 0.4A, 500kHz Switching Freq-Max, CDIP16 | UC2844AQDR vs SG1525AJ-883B |
| UC1525AJ/883BC | Unitrode Corporation | Check for Price | Switching Controller, Voltage-mode, 0.5A, 400kHz Switching Freq-Max, BIPolar, CDIP16, | UC2844AQDR vs UC1525AJ/883BC |
| LT1525AJ | Linear Technology | Check for Price | IC 0.4 A SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, CDIP16, HERMETIC SEALED, DIP-16, Switching Regulator or Controller | UC2844AQDR vs LT1525AJ |
| M38510/12602BEA | Texas Instruments | Check for Price | 0.2A SWITCHING CONTROLLER, 300kHz SWITCHING FREQ-MAX, CDIP16, CERAMIC, DIP-16 | UC2844AQDR vs M38510/12602BEA |
| SG1525AJ10744 | Microchip Technology Inc | Check for Price | Switching Controller, 0.5A, 500kHz Switching Freq-Max, CDIP16 | UC2844AQDR vs SG1525AJ10744 |
| LT1525AJ/883C | Linear Technology | Check for Price | IC 0.5 A SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, CDIP16, HERMETIC SEALED, CERDIP-16, Switching Regulator or Controller | UC2844AQDR vs LT1525AJ/883C |
| UC1525AJ/DESC | Unitrode Corp (RETIRED) | Check for Price | Switching Controller, Voltage-mode, 0.5A, 500kHz Switching Freq-Max, BIPolar, CDIP16, | UC2844AQDR vs UC1525AJ/DESC |
| 5962-8951103VEA | Defense Logistics Agency | Check for Price | Switching Controller, 0.5A, 350kHz Switching Freq-Max, CDIP16, CERAMIC, DIP-16 | UC2844AQDR vs 5962-8951103VEA |
| SG1525AJ-DESC | Microchip Technology Inc | Check for Price | Switching Regulator/Controller | UC2844AQDR vs SG1525AJ-DESC |
UC2844AQDR Frequently Asked Questions (FAQ)
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The UC2844AQDR 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 high-frequency nodes, and using short, wide traces for the power lines. Additionally, it's essential to follow the recommended component placement and orientation to minimize radiated emissions.
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Choosing the right inductor for the UC2844AQDR involves considering factors such as inductance value, saturation current, and core material. TI recommends using an inductor with an inductance value between 1.5uH and 3.3uH, and a saturation current rating of at least 2A. The core material should be ferrite or iron powder, and the inductor should have a low DC resistance to minimize power losses.
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The UC2844AQDR has an absolute maximum input voltage rating of 18V, but TI recommends operating it within the recommended input voltage range of 12V to 15V for optimal performance and reliability. Exceeding the maximum input voltage can cause damage to the device or affect its performance.
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The UC2844AQDR's voltage feedback loop requires compensation to ensure stability and prevent oscillations. TI recommends using a Type II compensation network, which consists of a series resistor and capacitor connected between the VFB pin and the output voltage. The values of the resistor and capacitor depend on the specific application and output voltage, but a good starting point is R = 1kΩ and C = 10nF.
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The UC2844AQDR has a built-in soft-start circuit that limits the inrush current during startup. The soft-start time is approximately 1ms, but it can be adjusted by adding an external capacitor between the SS pin and ground. The soft-start time can be calculated using the formula t_ss = 1.1 * C_ss * R_ss, where C_ss is the external capacitor value and R_ss is the internal resistance of the SS pin.