S-1137B21-U5T1U

Basic Information Overview

• Category: Electronic Component
• Use: Power Management IC
• Characteristics: High Efficiency, Low Power Consumption
• Package: SOT-23-5
• Essence: Voltage Regulator
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage Range: 1.2V to 5.5V
• Output Current: Up to 500mA
• Dropout Voltage: 200mV (typical)
• Quiescent Current: 30µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

1. VIN: Input Voltage
2. GND: Ground
3. EN: Enable Pin
4. FB: Feedback Pin
5. VOUT: Output Voltage

Functional Features

• Low Dropout Voltage: The S-1137B21-U5T1U has a low dropout voltage of only 200mV, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• High Efficiency: With its high efficiency design, this power management IC minimizes power loss and maximizes energy conversion, making it suitable for battery-powered applications.
• Low Power Consumption: The quiescent current of only 30µA ensures minimal power consumption during standby or idle mode, extending battery life.
• Thermal Shutdown Protection: The device incorporates thermal shutdown protection, which prevents damage due to excessive temperature.

Advantages and Disadvantages

Advantages

• Compact Package: The SOT-23-5 package offers a small footprint, making it suitable for space-constrained applications.
• Wide Input Voltage Range: The IC can accept input voltages ranging from 2.5V to 6.0V, providing flexibility in various power supply configurations.
• High Output Current: With a maximum output current of 500mA, the S-1137B21-U5T1U can power a wide range of devices.

Disadvantages

• Limited Output Voltage Range: The output voltage range is limited to 1.2V to 5.5V, which may not be suitable for applications requiring higher or lower voltages.
• No Adjustable Output: The output voltage is fixed and cannot be adjusted externally.

Working Principles

The S-1137B21-U5T1U is a voltage regulator that maintains a stable output voltage regardless of variations in the input voltage. It utilizes a feedback mechanism to continuously monitor the output voltage and adjust the internal circuitry to maintain the desired voltage level. The enable pin allows for control of the regulator's operation, enabling power-saving modes when necessary.

Detailed Application Field Plans

The S-1137B21-U5T1U is commonly used in various battery-powered applications, such as portable electronic devices, wireless communication systems, and IoT devices. Its compact size, high efficiency, and low power consumption make it ideal for these applications where space and power efficiency are crucial.

Detailed and Complete Alternative Models

• S-1137B22-U5T1U: Similar specifications but with an adjustable output voltage feature.
• S-1137B23-U5T1U: Higher output current capability (up to 1A) with similar characteristics.

Note: These alternative models provide options based on specific requirements and should be selected accordingly.

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