LM21305SQE/NOPB is out of stock and can be placed on backorder.
Available Substitutes:
Parametric Equivalent
Parametric Equivalent

Image shown is a representation only. Exact specifications should be obtained from the product data sheet.
LM21305SQE/NOPB | |
|---|---|
DigiKey Part Number | LM21305SQE/NOPBTR-ND - Tape & Reel (TR) LM21305SQE/NOPBCT-ND - Cut Tape (CT) LM21305SQE/NOPBDKR-ND - Digi-Reel® |
Manufacturer | |
Manufacturer Product Number | LM21305SQE/NOPB |
Description | IC REG BUCK ADJ 5A 28WQFN |
Manufacturer Standard Lead Time | 18 Weeks |
Customer Reference | |
Detailed Description | Buck Switching Regulator IC Positive Adjustable 0.598V 1 Output 5A 28-WFQFN Exposed Pad |
Datasheet | Datasheet |
EDA/CAD Models | LM21305SQE/NOPB Models |
Product Attributes
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Category | Voltage - Output (Min/Fixed) |
Mfr | Voltage - Output (Max) 18V |
Packaging Tape & Reel (TR) Cut Tape (CT) Digi-Reel® | Current - Output |
Part Status Active | Frequency - Switching 300kHz ~ 1.5MHz |
Function Step-Down | Synchronous Rectifier Yes |
Output Configuration Positive | Operating Temperature -40°C ~ 85°C (TA) |
Topology | Mounting Type Surface Mount |
Output Type | Package / Case |
Number of Outputs 1 | Supplier Device Package 28-WQFN (5x5) |
Voltage - Input (Min) 3V | Base Product Number |
Voltage - Input (Max) 18V |
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Substitutes (2)
| Part Number | Manufacturer | Quantity Available | DigiKey Part Number | Unit Price | Substitute Type |
|---|---|---|---|---|---|
| LM21305SQ/NOPB | Texas Instruments | 0 | LM21305SQ/NOPBTR-ND | $8.47000 | Parametric Equivalent |
| LM21305SQX/NOPB | Texas Instruments | 0 | LM21305SQX/NOPB-ND | $4.05916 | Parametric Equivalent |
In-Stock: 0
250 estimated in stock on 23-Oct-2026
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Quantity
All prices are in USD
Cut Tape (CT) & Digi-Reel®
| Quantity | Unit Price | Ext Price |
|---|---|---|
| 1 | $8.47000 | $8.47 |
| 10 | $6.57300 | $65.73 |
| 25 | $6.09840 | $152.46 |
| 100 | $5.57650 | $557.65 |
Tape & Reel (TR)
| Quantity | Unit Price | Ext Price |
|---|---|---|
| 250 | $5.32780 | $1,331.95 |
| 500 | $5.17782 | $2,588.91 |
| 750 | $5.10275 | $3,827.06 |
| 1,250 | $5.01956 | $6,274.45 |
| 1,750 | $4.97093 | $8,699.13 |
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