TI LM2678T-ADJ
Buck Switching Regulator IC Positive Adjustable 1.21V 1 Output 5A TO-220-7 Formed Leads
Brands: Texas Instruments
Mfr.Part #: LM2678T-ADJ
Datasheet: LM2678T-ADJ Datasheet (PDF)
Package/Case:
Product Type: Switching Voltage Regulators
RoHS Status:
Stock Condition: 5084 pcs, New Original
Warranty: 1 Year Ovaga Warranty - Find Out More
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The LM2678 series of regulators are monolithic integrated circuits which provide all of the active functions for a step-down (buck) switching regulator capable of driving up to 5-A loads with excellent line and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low ON-resistance DMOS power switch. The series consists of fixed output voltages of 3.3 V, 5 V, and 12 V and an adjustable output version.
The SIMPLE SWITCHER® concept provides for a complete design using a minimum number of external components. A high fixed frequency oscillator (260 kHz) allows the use of physically smaller sized components. A family of standard inductors for use with the LM2678 are available from several manufacturers to greatly simplify the design process.
The LM2678 series also has built-in thermal shutdown, current limiting, and an ON/OFF control input that can power down the regulator to a low 50-µA quiescent current standby condition. The output voltage is ensured to a ±2% tolerance. The clock frequency is controlled to within a ±11% tolerance.
Features
- Efficiency Up to 92%
- Simple and Easy to Design Using Off-the-Shelf External Components
- 120-mΩ DMOS Output Switch
- 3.3-V, 5-V, and 12-V Fixed Output and Adjustable (1.2 V to 37 V) Versions
- 50-µA Standby Current When Switched OFF
- ±2% Maximum Output Tolerance Over Full Line and Load Conditions
- Wide Input Voltage Range: 8 V to 40 V
- 260-kHz Fixed Frequency Internal Oscillator
- –40 to 125°C Operating Junction Temperature Range
- Create a Custom Design Using the LM2678 With the WEBENCH® Power Designer
Specifications
Parameter | Value | Parameter | Value |
---|---|---|---|
Manufacturer | Texas Instruments | Product Category | Switching Voltage Regulators |
RoHS | N | Output Voltage | 1.2 V to 37 V |
Output Current | 5 A | Input Voltage, Max | 40 V |
Number of Outputs | 1 Output | Topology | Buck |
Package / Case | TO-220-7 | Mounting Style | Through Hole |
Switching Frequency | 260 kHz | Minimum Operating Temperature | - 40 C |
Maximum Operating Temperature | + 125 C | Series | LM2678 |
Input Voltage, Min | 8 V | Brand | Texas Instruments |
Operating Supply Current | 4.2 mA | Product Type | Switching Voltage Regulators |
Factory Pack Quantity | 45 | Subcategory | PMIC - Power Management ICs |
Supply Voltage - Min | 8 V | Tradename | SIMPLE SWITCHER |
Type | Step Down |
Shipping
Shipping Type | Ship Fee | Lead Time | |
---|---|---|---|
DHL | $20.00-$40.00 (0.50 KG) | 2-5 days | |
Fedex | $20.00-$40.00 (0.50 KG) | 2-5 days | |
UPS | $20.00-$40.00 (0.50 KG) | 2-5 days | |
TNT | $20.00-$40.00 (0.50 KG) | 2-5 days | |
EMS | $20.00-$40.00 (0.50 KG) | 2-5 days | |
REGISTERED AIR MAIL | $20.00-$40.00 (0.50 KG) | 2-5 days |
Processing Time:Shipping fee depend on different zone and country.
Payment
Terms of payment | Hand Fee | |
---|---|---|
Wire Transfer | charge US$30.00 banking fee. | |
Paypal | charge 4.0% service fee. | |
Credit Card | charge 3.5% service fee. | |
Western Union | charge US.00 banking fee. | |
Money Gram | charge US$0.00 banking fee. |
Guarantees
1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.
2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.
Packing
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Step6 :bar-code shipping tag
All the products will packing in anti-staticbag. Ship with ESD antistatic protection.
Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.
We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.
After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.
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