AE-SLG46826V Voltage Regulator Documentation

1. Introduction

The AE-SLG46826V is a high-performance voltage regulator manufactured by Renesas. It is designed to deliver efficient power management in a wide range of electronic circuits. With its low dropout voltage and stable output, this component is ideal for battery-powered applications, portable devices, and other systems requiring reliable voltage regulation.

Key Features:

• Low dropout voltage for efficient power delivery.
• Stable output voltage for sensitive electronic components.
• Compact design suitable for space-constrained applications.
• High efficiency, reducing power loss and heat generation.

Common Applications:

• Battery-powered devices (e.g., wearables, IoT devices).
• Portable electronics.
• Microcontroller-based systems (e.g., Arduino projects).
• Power supply circuits for sensors and communication modules.

2. Technical Specifications

The following table outlines the key technical specifications of the AE-SLG46826V:

Pin Configuration and Descriptions

The AE-SLG46826V is available in an 8-pin STQFN package. The pinout and descriptions are as follows:

3. Usage Instructions

Basic Circuit Configuration

To use the AE-SLG46826V in a circuit, follow these steps:

1. Input Voltage (VIN): Connect the input voltage (1.8V to 5.5V) to the VIN pin. Ensure the input voltage is within the specified range.
2. Output Voltage (VOUT): Connect the load to the VOUT pin. The output voltage is regulated based on the feedback pin (FB).
3. Enable Pin (EN): Drive the EN pin high (logic 1) to enable the regulator. Pull it low (logic 0) to disable the regulator.
4. Feedback Pin (FB): Use a resistor divider network to set the desired output voltage. Refer to the formula in the datasheet for calculating resistor values.
5. Bypass Pin (BYP): Connect a small capacitor (e.g., 10nF) to the BYP pin to reduce output noise.
6. Ground (GND): Connect the GND pin to the circuit ground.

Example Circuit Diagram

Below is a basic circuit diagram for the AE-SLG46826V:

   +5V (Input)
      |
      R1
      |
      +-----> EN (Enable)
      |
     VIN -----> AE-SLG46826V -----> VOUT (Regulated Output)
      |                              |
     GND ----------------------------+

Important Considerations:

• Use low-ESR capacitors for input and output filtering to ensure stability.
• Avoid exceeding the maximum input voltage (5.5V) to prevent damage.
• Place the regulator and associated components close to the load to minimize noise and voltage drops.

4. Arduino Integration Example

The AE-SLG46826V can be used to power an Arduino UNO or other microcontroller boards. Below is an example of how to integrate it into an Arduino-based project:

Circuit Setup:

• Connect the AE-SLG46826V's VOUT to the Arduino's 5V pin.
• Use a 3.7V Li-ion battery as the input to the regulator.

Sample Arduino Code:

// Example: Reading a sensor powered by AE-SLG46826V regulator
// This code reads data from an analog sensor connected to A0.

const int sensorPin = A0;  // Analog pin connected to the sensor
int sensorValue = 0;       // Variable to store the sensor reading

void setup() {
  Serial.begin(9600);  // Initialize serial communication
  pinMode(sensorPin, INPUT);  // Set the sensor pin as input
}

void loop() {
  sensorValue = analogRead(sensorPin);  // Read the sensor value
  Serial.print("Sensor Value: ");
  Serial.println(sensorValue);  // Print the sensor value to the serial monitor
  delay(1000);  // Wait for 1 second before the next reading
}

5. Troubleshooting and FAQs

Common Issues and Solutions

FAQs

1. Can I use the AE-SLG46826V with a 3.3V microcontroller?

   • Yes, the regulator can provide a stable 3.3V output for microcontrollers. Adjust the feedback resistors accordingly.

2. What is the recommended input capacitor value?

   • A 1µF ceramic capacitor is recommended for the input to ensure stability.

3. Can I leave the BYP pin unconnected?

   • It is not recommended. Connect a small capacitor (e.g., 10nF) to the BYP pin to reduce noise.

4. What happens if the input voltage drops below 1.8V?

   • The regulator may stop functioning or provide an unstable output. Ensure the input voltage remains within the specified range.

6. Conclusion

The AE-SLG46826V voltage regulator by Renesas is a versatile and efficient component for powering electronic circuits. Its low dropout voltage, high efficiency, and compact design make it an excellent choice for battery-powered and portable applications. By following the guidelines in this documentation, users can integrate the AE-SLG46826V into their projects with ease and confidence.