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LM2676S-3.3
LM2676 SIMPLE SWITCHER 8V TO 40V
- Manufacturer
- Mfr. Part #LM2676S-3.3
- Package TO-263 (KTW)-7
- Datasheet LM2676S-3.3 DataSheet
- In Stock4421
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Specifications
| Package | Bulk |
| Series | SIMPLE SWITCHER® |
| ProductStatus | Active |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| OutputType | Fixed |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 8V |
| Voltage-Input(Max) | 40V |
| Voltage-Output(Min/Fixed) | 3.3V |
| Current-Output | 3A |
| Frequency-Switching | 260kHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | TO-263-8, D²Pak (7 Leads + Tab), TO-263CA |
Overview
Description
Key features include a wide input voltage range from 8V to 40V, making it versatile for various applications. The regulator operates at a 260 kHz fixed switching frequency, which helps in reducing the size of external components and improves overall efficiency. It also integrates thermal shutdown, current limiting, and an ON/OFF control for power-saving functionality.
The LM2676S-3.3 is suitable for applications like distributed power systems, battery-powered devices, and any scenario requiring a stable 3.3V output. Its SOP-7 package provides a compact footprint, and the design minimizes external component count, simplifying the implementation process for users.
Overall, the LM2676S-3.3 is a reliable and efficient solution for converting higher DC voltages to a stable 3.3V output in various electronic applications.
Features
1. Fixed Output Voltage: Delivers a 3.3V output, simplifying design by removing the need for additional components to set output voltage.
2. High Efficiency: Achieves efficiencies up to 92%, minimizing power loss and heat generation.
3. Wide Input Voltage Range: Operates from 8V to 40V, making it versatile for various input conditions.
4. High Output Current: Capable of delivering up to 3A of continuous output current, suitable for powering a wide range of devices.
5. Integrated Switch: Incorporates a 0.16Ω N-channel MOSFET, reducing external components and enhancing performance.
6. Switching Frequency: Operates at a fixed frequency of 260kHz, balancing size and performance.
7. Thermal Protection: Includes thermal shutdown to prevent overheating.
8. Current Limiting: Protects against over-current conditions, enhancing reliability.
9. Simple Design: Requires a minimal number of external components, simplifying the design process and reducing overall system cost.
10. Package: Available in a TO-263 package, facilitating easy heat dissipation.
These features make the LM2676S-3.3 ideal for applications requiring stable, efficient power delivery.
Package
Pinout
1. VIN (Pin 1): Input voltage pin. This pin receives the unregulated input voltage that the device will step down to 3.3V.
2. GND (Pin 2): Ground pin. This is the common ground for the input and output circuits.
3. SW (Pin 3): Switch pin. It is connected to the internal power switch of the regulator. An inductor connects between this pin and the output capacitor.
4. FB (Pin 4): Feedback pin. For the 3.3V fixed version, this pin is internally connected to the output to sense the voltage.
5. ON/OFF (Pin 5): Enable pin. This pin is used to enable or disable the regulator. Connecting it to ground enables the regulator, while a voltage above 1.3V disables it.
This regulator is designed for easy implementation in a variety of applications needing efficient power conversion.
Manufacturer
Application
Equivalent
1. L4973V3.3 - STMicroelectronics
2. NCP3170ADR2G - ON Semiconductor
3. TPS54331 - Texas Instruments
4. MC34063A - ON Semiconductor (with external components)
5. MP1584EN - Monolithic Power Systems
These alternatives should be evaluated for compatibility with your specific application requirements, including input voltage range, output current capability, and package type.
Shipping
Shipping MethodsWe
offer global shipping services through DHL, FedEx, TNT, UPS, or any other forwarder of your choice.
Shipping Fee Reference (DHL/FedEx):
DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.
FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.
UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.
TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.
EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.
Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.
Payments
Payment Methods
The Payment term is 100% Prepaid.
Currently, we only accept the below payment methods:
1. PayPal
2. Credit/ Debit Card
3. Wire Transfer
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