MIC37151-1.8WR

Product Overview

Category

The MIC37151-1.8WR belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: 1.8V
• Package Type: SOT-23-5
• Operating Temperature Range: -40°C to +125°C
• Quiescent Current: 35µA (typical)
• Dropout Voltage: 150mV (typical)

Package and Quantity

The MIC37151-1.8WR is available in a SOT-23-5 package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: 1.8V
• Output Current: Up to 150mA
• Dropout Voltage: 150mV (typical)
• Quiescent Current: 35µA (typical)
• Line Regulation: ±0.3% (typical)
• Load Regulation: ±0.4% (typical)
• Ripple Rejection: 60dB (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MIC37151-1.8WR has a total of five pins arranged as follows:

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Pin 1: VIN (Input Voltage) Pin 2: GND (Ground) Pin 3: EN (Enable) Pin 4: BYP (Bypass) Pin 5: VOUT (Output Voltage)

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output voltage differentials.
• Low quiescent current minimizes power consumption in standby or low-load conditions.
• Excellent line and load regulation characteristics provide stable output voltage under varying conditions.
• Integrated thermal shutdown and current limit protection enhance device reliability.

Advantages

• Wide input voltage range allows compatibility with various power sources.
• Small package size enables space-saving integration into compact electronic designs.
• Low dropout voltage ensures efficient power conversion.
• Excellent line and load regulation characteristics provide stable output voltage.
• Integrated protection features enhance device reliability.

Disadvantages

• Limited output current capability (up to 150mA).
• Higher dropout voltage compared to some alternative models.
• SOT-23-5 package may require surface-mount soldering expertise.

Working Principles

The MIC37151-1.8WR is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the feedback voltage from the output with a reference voltage, adjusting the pass transistor's resistance to maintain a constant output voltage. The enable pin allows for control of the regulator's operation, while the bypass pin provides an optional capacitor to improve transient response.

Application Field Plans

The MIC37151-1.8WR finds applications in various electronic systems requiring regulated voltage supply. Some potential application fields include:

1. Battery-powered devices: Portable electronics, handheld instruments, and wireless communication devices benefit from the low dropout voltage and wide input voltage range of the MIC37151-1.8WR.
2. Industrial automation: Control systems, sensors, and actuators often require stable and reliable voltage regulation, making the MIC37151-1.8WR suitable for such applications.
3. Automotive electronics: With its extended operating temperature range and robust protection features, the MIC37151-1.8WR can be used in automotive applications like infotainment systems, lighting controls, and engine management modules.

Alternative Models

1. MIC37151-2.5WR: Output voltage of 2.5V, otherwise similar specifications.
2. MIC37151-3.3WR: Output voltage of 3.3V, otherwise similar specifications.
3. MIC37151-5.0WR: Output voltage of 5.0V, otherwise similar specifications.

These alternative models offer different output voltages while maintaining similar characteristics and pin configurations to the MIC37151-1.8WR.

In conclusion, the MIC37151-1.8WR is a voltage regulator with a wide input voltage range, low dropout voltage, and excellent line and load regulation characteristics. It finds applications in various electronic systems and offers advantages such as compatibility, efficiency, and reliability. However, it has limitations in terms of output current capability and package type.