S-1172B27-U5T1U

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, High Output Current
• Package: SOT-89
• Essence: Regulates input voltage to a stable output voltage
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V - 6.0V
• Output Voltage Range: 1.2V - 5.5V
• Output Current: 1.0A
• Dropout Voltage: 0.15V @ 500mA
• Quiescent Current: 45µA typ.
• Line Regulation: ±0.05% typ.
• Load Regulation: ±0.3% typ.
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-1172B27-U5T1U has the following pin configuration:

```

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| | --| Vout | --| GND | --| Vin | |___________| ```

Functional Features

• Low dropout voltage allows for efficient regulation even with small input-output voltage differentials.
• High output current capability enables the IC to power a wide range of devices.
• Excellent line and load regulation ensures a stable output voltage under varying conditions.
• Built-in overcurrent protection safeguards the IC and connected devices from excessive current.

Advantages

• Compact SOT-89 package offers space-saving benefits in circuit design.
• Wide input voltage range allows for flexibility in various applications.
• Low quiescent current minimizes power consumption during standby or idle modes.
• Fast transient response ensures quick stabilization of the output voltage.

Disadvantages

• Limited output current may not be suitable for high-power applications.
• Dropout voltage may cause a significant power loss in low input voltage scenarios.

Working Principles

The S-1172B27-U5T1U is a linear voltage regulator that utilizes a PNP transistor as the pass element. It regulates the input voltage to a stable output voltage by adjusting the resistance of the pass element. The feedback loop continuously monitors the output voltage and adjusts the pass element's resistance accordingly to maintain the desired output voltage.

Detailed Application Field Plans

The S-1172B27-U5T1U is commonly used in various electronic devices and systems, including: - Battery-powered devices - Portable audio players - Mobile phones - Digital cameras - Wireless communication modules

Detailed and Complete Alternative Models

• S-1172B27-M5T1U: Similar specifications but with a different package (SOT-23)
• S-1172B27-U5T2U: Higher output current capability (1.5A) with similar specifications
• S-1172B27-U5T3U: Lower dropout voltage (0.1V @ 500mA) with similar specifications

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