MIC2238-SSYML-TR

Product Overview

Category

The MIC2238-SSYML-TR belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This product is commonly used in various electronic devices and systems to regulate and control power supply voltages efficiently.

Characteristics

• High efficiency: The MIC2238-SSYML-TR offers high conversion efficiency, minimizing power losses during voltage regulation.
• Low quiescent current: It has a low standby current, ensuring minimal power consumption when the device is not actively regulating voltage.
• Wide input voltage range: The product can handle a wide range of input voltages, making it suitable for diverse applications.
• Small form factor: The MIC2238-SSYML-TR comes in a compact package, allowing for space-efficient integration into electronic designs.
• Robust protection features: It incorporates various protection mechanisms such as overcurrent protection, thermal shutdown, and undervoltage lockout.

Package and Quantity

The MIC2238-SSYML-TR is available in a small outline integrated circuit (SOIC) package. It is typically supplied in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: Adjustable from 0.6V to VIN
• Maximum Output Current: 1.5A
• Switching Frequency: 1.2MHz
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MIC2238-SSYML-TR features a standard 8-pin SOIC package with the following pin configuration:

```

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| | --| V IN GND|-- Pin 1: Input Voltage (VIN) --| SW FB |-- Pin 2: Switching Node --| EN COMP|-- Pin 3: Enable Control --| PGND SS |-- Pin 4: Power Ground --| VOUT VCC|-- Pin 5: Output Voltage (VOUT) --| PGND SS |-- Pin 6: Power Ground --| LX SYNC|-- Pin 7: Inductor Connection --| | |___________| ```

Functional Features

• High Efficiency: The MIC2238-SSYML-TR utilizes a synchronous buck converter architecture, ensuring efficient power conversion with minimal losses.
• Adjustable Output Voltage: The output voltage can be easily adjusted within the specified range to meet the requirements of different applications.
• Enable Control: The enable pin allows for easy on/off control of the device, enabling power-saving modes when not in use.
• Soft-Start Function: The soft-start feature ensures a controlled and gradual ramp-up of the output voltage during startup, preventing excessive inrush current.
• Current Limit Protection: The integrated current limit protection prevents damage to the device and connected components by limiting the output current under fault conditions.
• Thermal Shutdown: In case of excessive temperature rise, the thermal shutdown feature activates, protecting the device from overheating.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption and longer battery life.
• Wide input voltage range enables compatibility with various power sources.
• Compact package facilitates space-efficient integration into electronic designs.
• Robust protection features enhance reliability and prevent damage to the device and connected components.

Disadvantages

• Limited maximum output current may restrict its use in high-power applications.
• The adjustable output voltage range might require additional circuitry for precise voltage regulation in some cases.

Working Principles

The MIC2238-SSYML-TR operates as a synchronous buck converter, converting a higher input voltage to a lower output voltage efficiently. It utilizes pulse-width modulation (PWM) techniques to regulate the output voltage. The integrated control circuitry adjusts the duty cycle of the switching transistor to maintain the desired output voltage, compensating for load variations and input voltage changes.

During operation, the input voltage is connected to the VIN pin, and the output voltage is obtained from the VOUT pin. The switching node (SW) controls the flow of current through the inductor, which stores energy during the on-time of the switching transistor and releases it during the off-time. This continuous cycle ensures efficient power conversion.

Detailed Application Field Plans

The MIC2238-SSYML-TR finds applications in various electronic devices and systems that require efficient voltage regulation. Some potential application fields include:

1. Portable Electronics: The product can be used in smartphones, tablets, portable media players, and other battery-powered devices to regulate the voltage supplied to different components.

2. IoT Devices: In Internet of Things (IoT) applications, where low power consumption is crucial, the MIC2238-SS