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LD1117-3.3
+BOMIC REG LINEAR 3.3V 1A SOT-223-3L
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ManufacturerUMW
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Mfr. Part #LD1117-3.3
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Datasheet LD1117-3.3 DataSheet
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In Stock12983
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Specifications
| Attribute | Value |
| Part Status | Active |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 12V |
| Voltage - Output (Min / Fixed) | 3.3V |
| Voltage Dropout (Max) | 1.3V @ 1A |
| Current - Output | 1A |
| Current - Quiescent (Iq) | 10 mA |
| PSRR | 75dB (120Hz) |
| Control Features | Current Limit |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | TO-261-4, TO-261AA |
| Supplier Device Package | SOT-223-3L |
Overview
Description
Equivalent
1. LM1117-3.3 by Texas Instruments
2. MIC29302-3.3 by Microchip Technology
3. AMS1117-3.3 by Advanced Monolithic Systems
4. NCP1117-3.3 by ON Semiconductor
5. TLV1117-3.3 by Texas Instruments
These components offer similar voltage output and performance characteristics, suitable for applications requiring a 3.3V linear regulator. Always verify datasheet specifications for compatibility.
Features
1. Output Voltage: 3.3V fixed output, suitable for powering 3.3V logic circuits and microcontrollers.
2. Input Voltage Range: Generally requires an input voltage of at least 4.3V to maintain proper regulation.
3. Low Dropout Voltage: Typically around 1.1V at maximum output current, allowing for efficient operation with closer input-output voltage levels.
4. Output Current: Capable of supplying up to 800mA of output current, sufficient for a wide range of applications.
5. Thermal Protection: Built-in thermal shutdown feature prevents damage from overheating.
6. Short-Circuit Protection: Protects against damage when the output is shorted.
7. Stability: Requires external capacitors for stability, typically a 10µF capacitor on the output.
8. Package Options: Available in various package types, such as TO-220, SOT-223, and DPAK, to suit different assembly needs.
9. Applications: Commonly used in consumer electronics, microprocessor power supply, and battery-powered devices.
Pinout
1. Input (Vin): This pin is where the input voltage is supplied. It should be higher than the desired output voltage, typically a few volts more to ensure proper regulation.
2. Output (Vout): This pin provides the regulated output voltage, which is fixed at 3.3V for the LD1117-3.3 variant.
3. Ground (GND): This pin is connected to the ground of the circuit. It acts as a reference point for the input and output voltages.
The LD1117-3.3 is commonly used to regulate and provide a stable 3.3V output from a higher input voltage source, and it is often used in applications where a simple and reliable power supply is required.
Manufacturer
Application
1. Consumer Electronics: Powering microcontrollers and digital circuits in devices like smartphones and tablets.
2. Communication Devices: Ensuring stable voltage supply in modems, routers, and other networking equipment.
3. Embedded Systems: Used in development boards and IoT devices for reliable power.
4. Industrial Applications: Powering sensors and control units in automation systems.
5. Computer Peripherals: Powering components such as USB hubs, printers, and external storage devices.
6. Automotive: Used in infotainment systems and other electronics that require stable voltage.