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LM2596 Buck Regulator
LM2596
Texas Instrumentspower regulator
The LM2596 is a 3A step-down (buck) DC-DC voltage regulator IC. It operates at 150kHz and is available in fixed output voltages (3.3V, 5V, 12V) or an adjustable version, requiring minimal external components.
In stock
Specifications
8- Output Voltage
- 3.3, 5, 12, or adjustable V
- Adjustable Output Voltage Range
- 1.2 to 37 V
- Output Load Current
- 3 A
- Input Voltage Range
- 4.5 to 40 V
- Switching Frequency
- 150 kHz
- Standby Current
- 80 μA
- Operating Temperature Range
- -40 to 125 °C
- Package
- TO-220, TO-263
Pinout
5| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | VIN | POWER | Positive input supply for the IC switching regulator. |
| 2 | Output | GPIO | Internal switch; voltage switches between approximately (VIN - VSAT) and -0.5V. |
| 3 | Ground | GND | Circuit ground. |
| 4 | Feedback | ADC | Senses the regulated output voltage for the feedback loop. |
| 5 | ON/OFF | GPIO | Allows shutdown of the regulator; typically 80 µA standby current. Pulling below 1.3V turns ON, above 1.3V turns OFF. |
Interactive pinout
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LM2596
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