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1-V to 14-V, voltage mode synchronous buck controller with pre-bias startup and optional clock sync 14-TSSOP -40 to 125
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.
LM2745MTCX/NOPB 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.
Part # | Distributor | Description | Stock | Price | Buy | |
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DISTI #
296-35270-1-ND
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DigiKey | IC REG CTRLR BUCK 14TSSOP Min Qty: 1 Lead time: 6 Weeks Container: Digi-Reel®, Cut Tape (CT), Tape & Reel (TR) | Temporarily Out of Stock |
|
$1.2105 / $2.4100 | Buy Now |
DISTI #
926-LM2745MTCX/NOPB
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Mouser Electronics | Switching Controllers 1-V to 14-V voltage mode synchronous bu A 926-LM2745MTC/NOPB RoHS: Compliant | 1012 |
|
$1.1900 / $2.4100 | Buy Now |
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LM2745MTCX/NOPB
Texas Instruments
Buy Now
Datasheet
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LM2745MTCX/NOPB
Texas Instruments
1-V to 14-V, voltage mode synchronous buck controller with pre-bias startup and optional clock sync 14-TSSOP -40 to 125
|
Pbfree Code | Yes | |
Rohs Code | Yes | |
Part Life Cycle Code | Active | |
Ihs Manufacturer | TEXAS INSTRUMENTS INC | |
Part Package Code | TSSOP | |
Package Description | TSSOP-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 | VOLTAGE-MODE | |
Control Technique | PULSE WIDTH MODULATION | |
Input Voltage-Max | 14 V | |
Input Voltage-Min | 1 V | |
Input Voltage-Nom | 3.3 V | |
JESD-30 Code | R-PDSO-G14 | |
JESD-609 Code | e3 | |
Length | 5 mm | |
Moisture Sensitivity Level | 1 | |
Number of Functions | 1 | |
Number of Outputs | 1 | |
Number of Terminals | 14 | |
Operating Temperature-Max | 125 °C | |
Operating Temperature-Min | -40 °C | |
Output Current-Max | 20 A | |
Output Voltage-Max | 12 V | |
Output Voltage-Min | 0.6 V | |
Package Body Material | PLASTIC/EPOXY | |
Package Code | TSSOP | |
Package Shape | RECTANGULAR | |
Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH | |
Peak Reflow Temperature (Cel) | 260 | |
Qualification Status | Not Qualified | |
Seated Height-Max | 1.1 mm | |
Surface Mount | YES | |
Switcher Configuration | BUCK | |
Switching Frequency-Max | 1000 kHz | |
Temperature Grade | AUTOMOTIVE | |
Terminal Finish | Matte Tin (Sn) | |
Terminal Form | GULL WING | |
Terminal Pitch | 0.65 mm | |
Terminal Position | DUAL | |
Time@Peak Reflow Temperature-Max (s) | 30 | |
Width | 4.4 mm |
This table gives cross-reference parts and alternative options found for LM2745MTCX/NOPB. 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 LM2745MTCX/NOPB, 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 |
---|---|---|---|---|
LM2745MTCX | Texas Instruments | Check for Price | SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, TSSOP-14 | LM2745MTCX/NOPB vs LM2745MTCX |
Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general best practices for switching regulator layouts, such as keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing trace lengths and widths.
To ensure stability, make sure to follow the recommended component values and layout guidelines in the datasheet. Additionally, use a sufficient output capacitor with a low ESR, and consider adding a small ceramic capacitor (e.g. 10nF) in parallel with the output capacitor to improve stability.
While the datasheet specifies a maximum input voltage of 18V, it's recommended to derate this value by 10-20% to ensure reliable operation and prevent damage to the IC. Therefore, a maximum input voltage of 15-16V is recommended.
The LM2745MTCX/NOPB is rated for operation up to 125°C, but its performance and reliability may degrade at high temperatures. Be sure to follow the recommended operating conditions and consider using thermal management techniques, such as heat sinks or thermal interfaces, to keep the IC within its specified temperature range.
The power dissipation of the LM2745MTCX/NOPB can be calculated using the equation: Pd = (Vin - Vout) x Iout x efficiency. The efficiency can be estimated from the datasheet or measured in the application. Be sure to consider the maximum power dissipation rating of the IC and take steps to ensure it remains within its specified limits.