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Description: 1. LM2596S and LM2577S are adjustable DC-DC buck and boost power supply modules based on the Linear Technology LM2596 and LM2577 chips, respectively. These modules offer step-up (boost) and step-down (buck) functions for voltage conversion in IoT projects. 2. Input Voltage: The modules accept a wide input voltage range of 8-35V DC for LM2596S and 10-36V DC for LM2577S, making them versatile for various power sources in IoT applications. 3. Output Voltage: The adjustable output voltage ranges from 1.5V to 24V for both modules through a single potentiometer on the PCB. This feature enables precise voltage regulation and caters to diverse power requirements. 4. Efficiency: With an efficiency rating of up to 80%, LM2596S and LM2577S minimize energy wastage, making them economical solutions for IoT projects where low power consumption is essential. 5. Protection Circuitry: Integrated over-voltage (OVP) and short-circuit protection safeguards the modules from potential damages during op
| Specification | Details |
|---|---|
| Input Voltage Range | 3V to 35V (LM2596S) 4.75V to 40V (LM2577S) |
| Output Voltage | Adjustable 1.2V to 37V (LM2596S) 1.25V to 37V (LM2577S) |
| Output Current | Up to 3A (LM2596S) up to 3A (LM2577S) |
| Conversion Efficiency | Up to 95% (LM2596S) up to 94% (LM2577S) |
| Switching Frequency | Adjustable 50kHz to 500kHz (LM2596S) 50kHz to 700kHz (LM2577S) |
| Output Filter | Low ESR ceramic capacitor recommended |
| Thermal Protection | Overtemperature protection shuts down the module when temperature exceeds 150°C |
| Dimensions | 25mm x 20mm x 8.5mm |
| Weight | Approximately 10 grams |
| Package Type | SMD (Surface Mount Device) |
| Operating Temperature | -40°C to 125°C |
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