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LM2575SX-3.3
IC REG BUCK 3.3V 1A TO263
- Manufacturer
- Mfr. Part #LM2575SX-3.3
- Package
- Datasheet
- In Stock3282
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Specifications
| Series | SIMPLE SWITCHER® |
| Part Status | Obsolete |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 4V |
| Voltage - Input (Max) | 40V |
| Voltage - Output (Min/Fixed) | 3.3V |
| Current - Output | 1A |
| Frequency - Switching | 52kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | TO-263-6, D2PAK (5 Leads + Tab), TO-263BA |
| Supplier Device Package | TO-263 (DDPAK-5) |
| Base Product Number | LM2575 |
Overview
Description
Features
1. Fixed Output Voltage: Provides a 3.3V output.
2. Output Current: Capable of delivering up to 1A of output current.
3. Wide Input Voltage Range: Operates with an input voltage from 4V to 40V.
4. Efficiency: High efficiency due to its switching design, typically around 88%.
5. Switching Frequency: Fixed frequency operation at approximately 52 kHz.
6. Thermal Shutdown: Integrated protection feature to prevent overheating.
7. Current Limiting: Built-in current limiting to protect against overload conditions.
8. Overvoltage Protection: Safeguards against excessive voltage.
9. Low Component Count: Requires minimal external components, simplifying design.
10. TO-263 Package: Comes in a surface-mount package for easy PCB integration.
11. Versatile Applications: Suitable for a variety of power supply solutions in consumer and industrial electronics.
These features make the LM2575SX-3.3 an efficient and reliable choice for applications needing a 3.3V output from a higher voltage input.
Package
Pinout
1. Pin 1 (VIN): This is the input pin where the DC voltage is supplied. It can handle input voltages ranging from approximately 7V to 40V.
2. Pin 2 (Output): This pin provides the regulated 3.3V output. It is connected to the load that requires the regulated voltage.
3. Pin 3 (Ground): This is the ground pin, which is the reference point for the input and output voltages.
4. Pin 4 (Feedback): This pin is used to maintain the output voltage. In the fixed output version like the 3.3V, it is internally connected, so no external components are necessary.
5. Pin 5 (ON/OFF): This pin is used to enable or disable the regulator. Pulling this pin low disables the output, placing the device in a low-power shutdown mode. If not used, it should be connected to a high level or the input voltage for normal operation.
The LM2575SX-3.3 is widely used for its efficiency and simplicity in applications requiring a regulated 3.3V output.
Manufacturer
Application
Equivalent
1. LM2575T-3.3 (by Texas Instruments/National Semiconductor)
2. L4971 (by STMicroelectronics)
3. MC34063A (with external components adjustment, by ON Semiconductor)
4. NCP3063 (by ON Semiconductor)
5. L78S33CV (by STMicroelectronics, with consideration of different specifications)
These alternatives may have different specifications, so check datasheets for compatibility.
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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