SI9987DY-T1-E3

Product Overview

• Category: Integrated Circuit
• Use: Power Management
• Characteristics: High Efficiency, Low Power Consumption
• Package: SOIC-8
• Essence: Voltage Regulator
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 18V
• Output Voltage Range: 0.8V to 16V
• Maximum Output Current: 1A
• Dropout Voltage: 200mV at 1A
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The SI9987DY-T1-E3 has a standard SOIC-8 package with the following pin configuration:

1. VIN (Input Voltage)
2. GND (Ground)
3. EN (Enable)
4. FB (Feedback)
5. COMP (Compensation)
6. SS (Soft Start)
7. PGND (Power Ground)
8. VOUT (Output Voltage)

Functional Features

• High efficiency power management solution
• Low power consumption for energy-saving applications
• Wide input voltage range for versatile usage
• Adjustable output voltage for flexibility
• Soft start feature for smooth power-up
• Overcurrent and thermal protection for enhanced safety

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power wastage - Wide input voltage range allows compatibility with various power sources - Adjustable output voltage provides versatility in different applications - Soft start feature prevents sudden current surges during startup - Overcurrent and thermal protection ensure safe operation

Disadvantages: - Limited maximum output current of 1A may not be suitable for high-power applications - Dropout voltage of 200mV may cause slight voltage drop in certain scenarios

Working Principles

The SI9987DY-T1-E3 is a voltage regulator integrated circuit that regulates the input voltage to a desired output voltage. It operates by comparing the feedback voltage (FB) with a reference voltage and adjusting the duty cycle of an internal switch to maintain a stable output voltage. The compensation pin (COMP) is used to optimize stability and response time. The enable pin (EN) controls the device's on/off state.

Detailed Application Field Plans

The SI9987DY-T1-E3 is commonly used in various applications, including but not limited to:

1. Battery-powered devices: Provides regulated power supply for portable electronics such as smartphones, tablets, and wearables.
2. Industrial automation: Used in control systems, sensors, and actuators to ensure stable power delivery.
3. Automotive electronics: Regulates voltage for automotive components like infotainment systems, lighting, and engine control units.
4. IoT devices: Enables efficient power management in Internet of Things devices, extending battery life.
5. Home appliances: Used in power supplies for household appliances like smart TVs, routers, and gaming consoles.

Detailed and Complete Alternative Models

1. LM317T: Adjustable voltage regulator with a maximum output current of 1.5A.
2. LT1084CP-5: Fixed 5V voltage regulator capable of delivering up to 5A.
3. LM1117MPX-3.3: Low dropout voltage regulator with a fixed output voltage of 3.3V and a maximum output current of 800mA.
4. TPS5430DDAR: Synchronous buck converter with adjustable output voltage and a maximum output current of 3A.
5. LM7805: Fixed 5V voltage regulator with a maximum output current of 1A.

(Note: These alternative models are provided for reference and may have different specifications and pin configurations. Please refer to their respective datasheets for detailed information.)

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