Overview Of This LM2596 DC-DC Buck Converter Adjustable Step Down Power Supply Module
DC-DC Buck Converter Step Down Module LM2596 Power Supply is a step-down(buck) switching regulator, capable of driving a 3-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version.
The LM2596 series operates at a switching frequency of 150kHz, thus allowing smaller sized filter components than what would be required with lower frequency switching regulators.
This is an LM2596 DC-DC buck converter step-down power module with the high-precision potentiometer, capable of driving a load up to 3A with high efficiency, which can work with Freeduino UNO, other mainboards, and basic modules. When the output current keeps greater than 2.5A (or output power greater than 10W), please add a heat sink to it.
This device is internally compensated to minimize the number of external components to simplify the power supply design.
Since LM2596 converter is a switch-mode power supply, its efficiency is significantly higher in comparison with popular three-terminal linear regulators, especially with higher input voltages. The LM2596 operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators.
Specification:
| Specification | Details |
|---|---|
| Input Voltage Range | Typically 4.5V to 40V (recommended maximum is 40V) |
| Output Voltage Range | 1.25V to (Input Voltage – 1.5V), adjustable |
| Output Current | Up to 3A (with proper heat sinking) |
| Output Voltage Ripple | Typically 50mV (without output capacitor) |
| Switching Frequency | Typically 150kHz |
| Efficiency | Up to 92% (depends on input/output voltage and load) |
| Adjustable Voltage Regulation | ±4% (at room temperature) |
| Operating Temperature Range | -40°C to 85°C |
| Protections | Over-temperature, over-current, and short-circuit protection |
| Features | Adjustable output voltage, high efficiency, compact size, easy to use, low cost |
Features:
- Input voltage:3-40V
- Output voltage:1.5-35V(Adjustable)
- Output current: Rated current is 2A, maximum 3A(Additional heatsink is required)
- Module Properties: non-isolated constant voltage module
- Rectification: non-synchronous rectification
- Short circuit protection: current limiting, since the recovery
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