MIC5356-S4YMME

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - Low dropout voltage regulator - High output current capability - Wide input voltage range - Adjustable output voltage - Thermal shutdown protection - Short-circuit current limit - Low quiescent current

Package: SOT-23-5

Essence: The MIC5356-S4YMME is a power management integrated circuit designed for low dropout voltage regulation in various electronic devices.

Packaging/Quantity: The MIC5356-S4YMME is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 1.2V to 3.3V
• Dropout Voltage: 150mV at 150mA
• Output Current: Up to 500mA
• Quiescent Current: 45µA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MIC5356-S4YMME has the following pin configuration:

```

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| | --| VIN VOUT|-- --| EN GND |-- --| FB NC |-- --| PG NC |-- |___________| ```

• VIN: Input voltage pin
• VOUT: Output voltage pin
• EN: Enable pin
• GND: Ground pin
• FB: Feedback pin
• PG: Power Good pin
• NC: No connection

Functional Features

1. Low Dropout Voltage: The MIC5356-S4YMME exhibits a low dropout voltage of only 150mV at 150mA, ensuring efficient power conversion.

2. High Output Current Capability: With a maximum output current of 500mA, the MIC5356-S4YMME can power a wide range of electronic devices.

3. Wide Input Voltage Range: The IC operates within an input voltage range of 2.7V to 5.5V, making it suitable for various battery-powered applications.

4. Adjustable Output Voltage: The output voltage can be adjusted from 1.2V to 3.3V, providing flexibility in meeting different device requirements.

5. Thermal Shutdown Protection: The MIC5356-S4YMME incorporates thermal shutdown protection, preventing damage due to excessive temperature.

6. Short-Circuit Current Limit: The IC features a short-circuit current limit, safeguarding against potential damage caused by short circuits.

7. Low Quiescent Current: With a typical quiescent current of only 45µA, the IC minimizes power consumption during standby or idle modes.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient power conversion. - High output current capability enables powering of various devices. - Wide input voltage range accommodates different power sources. - Adjustable output voltage provides flexibility in device design. - Thermal shutdown protection prevents overheating. - Short-circuit current limit protects against damage. - Low quiescent current reduces power consumption.

Disadvantages: - Limited to SOT-23-5 package, which may not be suitable for all applications. - Noisy environments may affect performance due to lack of noise filtering capabilities.

Working Principles

The MIC5356-S4YMME is a low dropout voltage regulator that utilizes a pass transistor to regulate the output voltage. When the input voltage (VIN) is higher than the desired output voltage (VOUT), the pass transistor remains on, allowing current to flow from VIN to VOUT. As the input voltage drops close to the output voltage, the pass transistor adjusts its resistance to maintain a stable output voltage.

The enable pin (EN) controls the operation of the regulator. When EN is high, the regulator is enabled and actively regulates the output voltage. Conversely, when EN is low, the regulator enters a low-power standby mode, reducing quiescent current consumption.

The feedback pin (FB) is used to set the desired output voltage. By connecting an external resistor divider network between VOUT and FB, the output voltage can be adjusted within the specified range.

Detailed Application Field Plans

The MIC5356-S4YMME is suitable for a wide range of applications, including but not limited to:

1. Portable Devices: The low dropout voltage and wide input voltage range make it ideal for battery-powered portable devices such as smartphones, tablets, and portable media players.

2. Wireless Communication Systems: The IC's high output current capability and thermal shutdown protection make it suitable for powering wireless communication modules, such as Wi-Fi or Bluetooth modules.

3. Industrial Control Systems: With its adjustable output voltage and short-c