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LM2577 DC-DC Step-up Power Converter Module

LM2577 DC-DC Step-up Power Converter Module LM2577 DC-DC Step-up Power Converter Module
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Component Documentation

LM2577 DC-DC Step-up Power Converter Module

Overview

The LM2577 DC-DC Step-up Power Converter Module is a compact, high-efficiency DC-DC converter module designed to step up DC voltage levels in various applications, including IoT devices, robotics, and industrial systems. This module is based on the LM2577 switching regulator IC from Texas Instruments, which provides a reliable and efficient means of converting a lower input voltage to a higher output voltage.

Functionality

The LM2577 DC-DC Step-up Power Converter Module is designed to accept an input voltage range of 3V to 40V and convert it to a fixed output voltage of 5V, 9V, 12V, or adjustable output voltage (via an onboard potentiometer). The module uses a switching regulator topology to achieve high efficiency, low noise, and reduced heat generation.

The module's primary function is to boost the input voltage to a higher level, making it suitable for applications where a higher voltage is required, such as

Powering microcontrollers, sensors, or peripherals that require a higher voltage than the available input voltage

Charging batteries or supercapacitors from a lower voltage source

Creating a stable voltage supply for analog or digital circuits

Key Features

  • Input Voltage Range: 3V to 40V
  • Output Voltage Options: Fixed (5V, 9V, 12V) or Adjustable (via onboard potentiometer)
  • Efficiency: Up to 92% efficient, minimizing heat generation and power loss
  • Output Current: Up to 3A (depending on input voltage and output voltage settings)
  • Switching Frequency: 52 kHz, reducing electromagnetic interference (EMI) and noise
  • Protection Features:

Overcurrent protection (OCP) to prevent damage from excessive current

Short-circuit protection (SCP) to prevent damage from short circuits

Thermal shutdown (TSD) to prevent damage from overheating

  • Compact Design: Miniature PCB design with a small footprint (approximately 25mm x 25mm)
  • Easy Installation: Onboard screw terminals or pin header for convenient connections
  • High-Quality Components: Uses high-reliability components to ensure durability and long lifespan

Applications

The LM2577 DC-DC Step-up Power Converter Module is suitable for a wide range of applications, including

IoT devices (e.g., sensor nodes, gateways)

Robotics and automation systems

Industrial control systems

Medical devices

Automotive systems

Consumer electronics

Technical Specifications

| Parameter | Value |

| --- | --- |

| Input Voltage Range | 3V to 40V |

| Output Voltage Options | Fixed (5V, 9V, 12V) or Adjustable (via onboard potentiometer) |

| Efficiency | Up to 92% |

| Output Current | Up to 3A (depending on input voltage and output voltage settings) |

| Switching Frequency | 52 kHz |

| Operating Temperature Range | -40C to +85C |

| Storage Temperature Range | -40C to +125C |

Conclusion

The LM2577 DC-DC Step-up Power Converter Module is a reliable and efficient solution for stepping up DC voltage levels in various applications. Its compact design, high efficiency, and protection features make it an ideal choice for designers and engineers seeking a robust and cost-effective power converter solution.

Pin Configuration

  • LM2577 DC-DC Step-up Power Converter Module Pinout Explanation
  • The LM2577 DC-DC Step-up Power Converter Module is a efficient and compact module that provides a regulated output voltage from a lower input voltage. The module has a total of 5 pins, which are explained below:
  • Pin 1: VIN (Input Voltage)
  • Function: Input voltage pin, which connects to the power source (battery or voltage regulator).
  • Voltage Range: The input voltage range is 3V to 30V.
  • Connection: Connect the positive terminal of the power source to this pin.
  • Pin 2: GND (Ground)
  • Function: Ground pin, which connects to the ground or negative terminal of the power source.
  • Connection: Connect the negative terminal of the power source to this pin.
  • Pin 3: VOUT (Output Voltage)
  • Function: Output voltage pin, which provides the regulated output voltage.
  • Voltage Range: The output voltage range is adjustable from 1.23V to 37V using the ADJ pin (see below).
  • Connection: Connect the load (e.g., MCU, sensor, or other devices) that requires the regulated output voltage to this pin.
  • Pin 4: ADJ (Adjustable Pin)
  • Function: Adjustable pin, which allows the output voltage to be adjusted by connecting a resistor divider network between VOUT and GND.
  • Connection:
  • + Connect a resistor (R1) between VOUT and ADJ.
  • + Connect another resistor (R2) between ADJ and GND.
  • + The output voltage can be calculated using the formula: VOUT = 1.23V (1 + R1/R2).
  • Pin 5: EN (Enable Pin)
  • Function: Enable pin, which allows the module to be turned on or off by applying a logic signal.
  • Voltage Range: The enable pin can be connected to a logic signal (0V to 5V) or left open (no connection).
  • Connection:
  • + Connect to a logic high (5V) to enable the module.
  • + Connect to a logic low (0V) or leave open to disable the module.
  • Example Connection Diagram
  • Here is an example connection diagram for the LM2577 DC-DC Step-up Power Converter Module:
  • ```
  • +---------------+
  • | Power Source |
  • +---------------+
  • |
  • |
  • v
  • +---------------+
  • | VIN (Pin 1) |
  • +---------------+
  • |
  • |
  • v
  • +---------------+
  • | LM2577 Module |
  • +---------------+
  • |
  • |
  • v
  • +---------------+
  • | GND (Pin 2) |
  • +---------------+
  • |
  • |
  • v
  • +---------------+
  • | Load (e.g., |
  • | MCU, Sensor) |
  • +---------------+
  • |
  • |
  • v
  • +---------------+
  • | VOUT (Pin 3) |
  • +---------------+
  • |
  • |
  • v
  • +---------------+
  • | R1 |
  • | (Adjustable) |
  • +---------------+
  • |
  • |
  • v
  • +---------------+
  • | ADJ (Pin 4) |
  • +---------------+
  • |
  • |
  • v
  • +---------------+
  • | R2 |
  • | (Adjustable) |
  • +---------------+
  • |
  • |
  • v
  • +---------------+
  • | GND (Pin 2) |
  • +---------------+
  • |
  • |
  • v
  • +---------------+
  • | EN (Pin 5) |
  • | (Logic Signal) |
  • +---------------+
  • ```
  • Remember to carefully follow the pinout diagram and connection instructions to ensure proper operation and avoid damage to the module or connected devices.

Code Examples

LM2577 DC-DC Step-up Power Converter Module Documentation
Overview
The LM2577 DC-DC Step-up Power Converter Module is a high-performance, switch-mode voltage converter that can step up input voltage to a higher output voltage. This module is based on the popular LM2577 IC, which is a DC-DC converter with a high efficiency rating of up to 92%. The module is suitable for a wide range of applications, including IoT devices, robotics, and battery-powered systems.
Pinout and Connections
The LM2577 DC-DC Step-up Power Converter Module has the following pinout:
VIN: Input voltage (3V to 40V)
 VOUT: Output voltage (adjustable, up to 60V)
 EN: Enable pin (active low)
 GND: Ground
 ADJ: Adjustable output voltage pin (see datasheet for details)
Specifications
Input voltage range: 3V to 40V
 Output voltage range: adjustable up to 60V
 Output current: up to 3A
 Efficiency: up to 92%
 Operating frequency: 52 kHz
 Quiescent current: 3mA (typical)
Example Code and Applications
### Example 1: Basic Step-up Converter (Arduino)
In this example, we'll use the LM2577 DC-DC Step-up Power Converter Module to step up a 6V input voltage to 12V output voltage using an Arduino board.
```cpp
const int enablePin = 2;  // Connect EN pin to digital pin 2 on Arduino
void setup() {
  pinMode(enablePin, OUTPUT);
  digitalWrite(enablePin, HIGH);  // Enable the converter
}
void loop() {
  // No additional code needed, the converter will output 12V
}
```
Note: Make sure to connect the input voltage (VIN) to a suitable power source, and the output voltage (VOUT) to a load or a voltage regulator, if necessary. Also, ensure that the adjustable output voltage pin (ADJ) is properly configured according to the datasheet.
### Example 2: Adjustable Output Voltage (Raspberry Pi)
In this example, we'll use the LM2577 DC-DC Step-up Power Converter Module to step up a 5V input voltage to a variable output voltage (8V to 24V) using a Raspberry Pi.
```python
import RPi.GPIO as GPIO
import time
# Set up GPIO library
GPIO.setmode(GPIO.BCM)
# Define the enable pin
enable_pin = 17
# Set up the enable pin as an output
GPIO.setup(enable_pin, GPIO.OUT)
# Enable the converter
GPIO.output(enable_pin, GPIO.HIGH)
# Adjustable output voltage control (8V to 24V)
vout_voltage = 18  # Desired output voltage (18V in this case)
# Calculate the required resistance for the ADJ pin
adj_resistance = (vout_voltage - 1.23) / 0.015
adj_resistance = round(adj_resistance / 1000)  1000  # Round to nearest 1k
# Connect a potentiometer or a fixed resistor to the ADJ pin to set the output voltage
# Use a suitable value based on the calculated resistance
while True:
    # Monitor the output voltage using a voltage sensor or a multimeter
    time.sleep(1)
```
Note: This example assumes that a suitable potentiometer or fixed resistor is connected to the ADJ pin to set the output voltage. Make sure to follow the datasheet guidelines for adjusting the output voltage.
These examples demonstrate the basic usage of the LM2577 DC-DC Step-up Power Converter Module in different contexts. For more advanced applications, please refer to the datasheet and application notes provided by the manufacturer.