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LM3940IMP-3.3
IC REG LINEAR 3.3V 1A SOT223-4
- Manufacturer
- Mfr. Part #LM3940IMP-3.3
- Package SOT-223 (DCY)-4
- Datasheet
- In Stock6894
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Specifications
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Not For New Designs |
| OutputConfiguration | Positive |
| OutputType | Fixed |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 7.5V |
| Voltage-Output(Min/Fixed) | 3.3V |
| VoltageDropout(Max) | 0.2V @ 100mA |
| Current-Output | 1A |
| ProtectionFeatures | Over Temperature, Short Circuit |
| OperatingTemperature | -40°C ~ 125°C |
| MountingType | Surface Mount |
| Package/Case | TO-261-4, TO-261AA |
Overview
Description
The regulator offers several key features, including a fast transient response, low quiescent current, and excellent line and load regulation. It also includes overcurrent and thermal shutdown protection to enhance reliability. The LM3940IMP-3.3 comes in a small SOT-223 package, which makes it ideal for space-constrained designs. Its simplicity, with minimal external components required, benefits designers looking to implement a cost-effective and efficient power solution. Typical applications range from powering microcontrollers to using it in portable electronics and other low-power devices.
Features
1. Output Voltage: 3.3V with a ±2% accuracy.
2. Input Voltage Range: Capable of handling input voltages up to 7.5V.
3. Low Dropout Voltage: Typically around 500mV at full load to ensure efficient performance.
4. Output Current: Can deliver up to 1 Amp of output current.
5. Stability: Requires only a minimum of 33µF output capacitor, aiding in stable performance.
6. Thermal Protection: Built-in thermal shutdown to prevent overheating.
7. Short Circuit Protection: Protects the device from damage due to overcurrent conditions.
8. Package: Available in a space-saving SOT-223 package for ease of PCB placement.
9. Applications: Ideal for use in battery-powered devices, microcontroller power supplies, and other applications where 3.3V regulation is required.
These features make the LM3940IMP-3.3 suitable for applications demanding a reliable and stable 3.3V power supply, especially in compact or portable electronic designs.
Package
Pinout
The LM3940IMP-3.3 comes in an SOT-223 package and has a pin count of 3. The pins are configured as follows:
1. Input (IN): This pin receives the unregulated input voltage, typically 5V.
2. Ground (GND): This is the common ground pin used for both the input and output.
3. Output (OUT): This pin provides the regulated 3.3V output voltage.
The device is known for its low dropout voltage, making it efficient for battery-powered systems. It features thermal shutdown and current limiting for protection.
Overall, the LM3940IMP-3.3 is a simple, cost-effective solution for applications requiring a stable 3.3V output from a higher voltage input.
Manufacturer
Application
Equivalent
1. MIC29302 - Offers similar LDO functionality with 3.3V output.
2. AMS1117-3.3 - Widely used LDO with the same 3.3V output.
3. LD1117-3.3 - Another common 3.3V LDO with comparable characteristics.
Ensure to check specific parameters like dropout voltage, current rating, and package type 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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