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Part Details for LM21305SQ/NOPB by Texas Instruments
Results Overview of LM21305SQ/NOPB by Texas Instruments
- Distributor Offerings: (7 listings)
- Number of FFF Equivalents: (2 replacements)
- CAD Models: (Available)
- Number of Functional Equivalents: (4 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.
LM21305SQ/NOPB Information
LM21305SQ/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.
Price & Stock for LM21305SQ/NOPB
| Part # | Distributor | Description | Stock | Price | Buy | |
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DISTI #
LM21305SQ/NOPBCT-ND
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DigiKey | IC REG BUCK ADJ 5A 28WQFN Min Qty: 1 Lead time: 18 Weeks Container: Digi-Reel®, Cut Tape (CT), Tape & Reel (TR) |
1548 In Stock |
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$3.9925 / $7.4700 | Buy Now |
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DISTI #
926-LM21305SQ/NOPB
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Mouser Electronics | Switching Voltage Regulators 5A Adj Freq Sync Buc k Reg A 926-LM21305SQE/NOPB RoHS: Compliant | 2022 |
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$3.9900 / $6.8200 | Buy Now |
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DISTI #
V72:2272_07264950
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Arrow Electronics | Conv DC-DC 3V to 18V Synchronous Step Down Single-Out 0.6V 5A 28-Pin WQFN EP T/R RoHS: Compliant Min Qty: 1 Package Multiple: 1 Lead time: 18 Weeks Date Code: 2234 Container: Cut Strips | Americas - 779 |
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$4.0620 / $4.5840 | Buy Now |
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DISTI #
85989352
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Verical | Conv DC-DC 3V to 18V Synchronous Step Down Single-Out 0.6V 5A 28-Pin WQFN EP T/R RoHS: Compliant Min Qty: 72 Package Multiple: 1 Date Code: 1701 | Americas - 369 |
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$4.1875 / $5.2375 | Buy Now |
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Rochester Electronics | LM21305 3-18V, 5A, Current Mode Synchronous Buck Regulator with Adjustable Frequency RoHS: Compliant Status: Active Min Qty: 1 | 369 |
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$3.3500 / $4.1900 | Buy Now |
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DISTI #
LM21305SQ/NOPB
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Chip One Stop | Semiconductors RoHS: Compliant pbFree: Yes Min Qty: 1 Lead time: 0 Weeks, 1 Days Container: Cut Tape | 950 |
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$2.8300 / $4.4000 | Buy Now |
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Win Source Electronics | Conv DC-DC 3V to 18V Synchronous Step Down Single-Out 0.6V to 5V 5A 28-Pin WQFN EP T/R / IC REG BUCK ADJ 5A SYNC 28WQFN | 1660 |
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$3.1281 / $4.6921 | Buy Now |
Part Details for LM21305SQ/NOPB
LM21305SQ/NOPB CAD Models
LM21305SQ/NOPB Part Data Attributes
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LM21305SQ/NOPB
Texas Instruments
Buy Now
Datasheet
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Compare Parts:
LM21305SQ/NOPB
Texas Instruments
3-18V, 5A, Current Mode Synchronous Buck Regulator with Adjustable Frequency 28-WQFN -40 to 85
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| Pbfree Code | Yes | |
| Rohs Code | Yes | |
| Part Life Cycle Code | Active | |
| Ihs Manufacturer | TEXAS INSTRUMENTS INC | |
| Part Package Code | QFN | |
| Package Description | WQFN-28 | |
| Pin Count | 28 | |
| Reach Compliance Code | compliant | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.01 | |
| Samacsys Manufacturer | Texas Instruments | |
| Additional Feature | 5 VOLT REGULATING OUTPUT ALSO AVAILABLE | |
| Analog IC - Other Type | SWITCHING REGULATOR | |
| Control Mode | CURRENT-MODE | |
| Control Technique | PULSE WIDTH MODULATION | |
| Input Voltage-Max | 18 V | |
| Input Voltage-Min | 3 V | |
| Input Voltage-Nom | 12 V | |
| JESD-30 Code | S-PQCC-N28 | |
| JESD-609 Code | e3 | |
| Length | 5 mm | |
| Number of Functions | 1 | |
| Number of Outputs | 1 | |
| Number of Terminals | 28 | |
| Operating Temperature-Max | 85 °C | |
| Operating Temperature-Min | -40 °C | |
| Output Current-Max | 5 A | |
| Output Voltage-Max | 0.6 V | |
| Output Voltage-Min | 0.6 V | |
| Output Voltage-Nom | 2.5 V | |
| Package Body Material | PLASTIC/EPOXY | |
| Package Code | HVQCCN | |
| Package Equivalence Code | LCC28,.2SQ,20 | |
| Package Shape | SQUARE | |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | |
| Peak Reflow Temperature (Cel) | 260 | |
| Qualification Status | Not Qualified | |
| Seated Height-Max | 0.8 mm | |
| Surface Mount | YES | |
| Switcher Configuration | BUCK | |
| Switching Frequency-Max | 1500 kHz | |
| Temperature Grade | INDUSTRIAL | |
| Terminal Finish | Matte Tin (Sn) | |
| Terminal Form | NO LEAD | |
| Terminal Pitch | 0.5 mm | |
| Terminal Position | QUAD | |
| Time@Peak Reflow Temperature-Max (s) | 30 | |
| Width | 5 mm |
Alternate Parts for LM21305SQ/NOPB
This table gives cross-reference parts and alternative options found for LM21305SQ/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 LM21305SQ/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 |
|---|---|---|---|---|
| LM21305SQ | National Semiconductor Corporation | Check for Price | IC 10.2 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, QCC28, 5 X 5 MM, 0.80 MM HEIGHT, 0.50 MM PITCH, LLP-28, Switching Regulator or Controller | LM21305SQ/NOPB vs LM21305SQ |
| LM21305SQ | Texas Instruments | Check for Price | IC 10.2 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, QCC28, 5 X 5 MM, 0.80 MM HEIGHT, 0.50 MM PITCH, LLP-28, Switching Regulator or Controller | LM21305SQ/NOPB vs LM21305SQ |
LM21305SQ/NOPB Frequently Asked Questions (FAQ)
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The LM21305SQ/NOPB can handle a maximum input voltage of 42V, but it's recommended to operate within the specified input voltage range of 3.5V to 36V for optimal performance.
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To ensure stability, it's essential to follow the recommended PCB layout guidelines, use a sufficient output capacitor, and add a compensation capacitor (if necessary) as specified in the datasheet.
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The minimum ESR required for the output capacitor is 0.1 ohms. However, it's recommended to use a capacitor with an ESR of 0.05 ohms or less for optimal performance.
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The LM21305SQ/NOPB is rated for operation up to 125°C, but it's essential to consider the thermal design and ensure proper heat dissipation to prevent overheating.
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The output voltage of the LM21305SQ/NOPB can be calculated using the formula: Vout = (1 + R2/R1) * 0.8V, where R1 and R2 are the resistors used in the feedback network.