MIC5503-1.8YMT-TZ

Product Overview

Category

MIC5503-1.8YMT-TZ belongs to the category of voltage regulators.

Use

This product is primarily used for regulating voltage in electronic circuits.

Characteristics

• Package: The MIC5503-1.8YMT-TZ comes in a compact surface-mount package.
• Essence: It is a low-dropout (LDO) voltage regulator with a fixed output voltage of 1.8V.
• Packaging/Quantity: The product is typically packaged in reels or tubes, with varying quantities depending on the supplier.

Specifications

The MIC5503-1.8YMT-TZ has the following specifications:

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage: 1.8V ±2%
• Dropout Voltage: 200mV (typical)
• Maximum Output Current: 150mA
• Quiescent Current: 50µA (typical)
• Line Regulation: 0.05%/V (typical)
• Load Regulation: 0.1%/mA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MIC5503-1.8YMT-TZ has the following pin configuration:

```

---

| | --| VIN VOUT|-- --| GND BYP|-- |___________| ```

• VIN: Input voltage pin
• VOUT: Output voltage pin
• GND: Ground pin
• BYP: Bypass capacitor pin

Functional Features

The key functional features of MIC5503-1.8YMT-TZ include:

1. Low Dropout Voltage: The regulator maintains a low dropout voltage of only 200mV, ensuring efficient power conversion.
2. Low Quiescent Current: With a typical quiescent current of 50µA, the device minimizes power consumption in standby or low-load conditions.
3. Excellent Line and Load Regulation: The regulator exhibits excellent line and load regulation characteristics, providing stable output voltage across varying input voltages and loads.
4. Thermal Shutdown Protection: The MIC5503-1.8YMT-TZ incorporates thermal shutdown protection to prevent damage due to excessive temperature.

Advantages and Disadvantages

Advantages

• Compact package size allows for space-saving integration into various electronic devices.
• Low dropout voltage ensures efficient power conversion even with small input-output voltage differentials.
• Excellent line and load regulation characteristics provide stable output voltage under varying conditions.

Disadvantages

• Limited maximum output current of 150mA may not be suitable for high-power applications.
• Fixed output voltage of 1.8V restricts flexibility in certain designs requiring adjustable voltage levels.

Working Principles

The MIC5503-1.8YMT-TZ operates as a low-dropout voltage regulator by utilizing a pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable output voltage. The device also incorporates internal circuitry for thermal shutdown protection, preventing overheating and potential damage.

Application Field Plans

The MIC5503-1.8YMT-TZ finds application in various electronic systems that require a regulated 1.8V power supply. Some potential application fields include:

1. Battery-Powered Devices: Portable electronic devices such as smartphones, tablets, and wearables can benefit from the low dropout voltage and low quiescent current of the MIC5503-1.8YMT-TZ, extending battery life.
2. IoT Devices: Internet of Things (IoT) devices often operate on low voltages and require stable power supplies. The MIC5503-1.8YMT-TZ can be used in IoT sensors, smart home devices, and other connected systems.
3. Embedded Systems: Microcontrollers, digital signal processors (DSPs), and other embedded systems often require a regulated 1.8V supply. The MIC5503-1.8YMT-TZ can provide the necessary voltage stability in these applications.

Alternative Models

In addition to the MIC5503-1.8YMT-TZ, there are several alternative models available that offer similar functionality. Some notable alternatives include:

1. LT1763-1.8: A low dropout regulator with a fixed output voltage of 1.8V, capable of delivering up to 500mA of current.
2. LM1117-1.8: Another popular LDO regulator with a fixed 1.8V output voltage, suitable for low-power applications.
3. TPS79918: This Texas Instruments regulator offers a fixed 1.8V output voltage and features ultra-low quiescent current for power-sensitive designs.

These alternative models provide