S-1172B34-U5T1G

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, High Accuracy
• Package: SOT-23-5
• Essence: Regulates voltage with low dropout and high accuracy
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV at 100mA
• Output Current: 100mA
• Quiescent Current: 45µA
• Line Regulation: ±0.05% (Typical)
• Load Regulation: ±0.3% (Typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-1172B34-U5T1G has a total of five pins arranged as follows: 1. VIN: Input voltage pin 2. GND: Ground pin 3. CE: Chip enable pin 4. VOUT: Output voltage pin 5. NC: No connection pin

Functional Features

• Low dropout voltage ensures stable output even when the input voltage is close to the desired output voltage.
• High accuracy provides precise regulation of the output voltage.
• Built-in overcurrent protection safeguards the circuit from excessive current flow.
• Thermal shutdown feature prevents damage due to overheating.

Advantages

• Compact SOT-23-5 package allows for space-efficient integration into various electronic devices.
• Wide input voltage range enables compatibility with different power sources.
• Low quiescent current minimizes power consumption in standby mode.
• Excellent line and load regulation ensure consistent performance under varying conditions.

Disadvantages

• Limited output current of 100mA may not be sufficient for high-power applications.
• Dropout voltage of 200mV may cause a slight voltage drop across the regulator.

Working Principles

The S-1172B34-U5T1G is a linear voltage regulator that operates by comparing the output voltage with an internal reference voltage. It adjusts the pass transistor to maintain a stable output voltage, compensating for changes in input voltage and load conditions. The dropout voltage is minimized by employing a low resistance pass element.

Detailed Application Field Plans

The S-1172B34-U5T1G finds application in various electronic devices where a stable and accurate voltage supply is required. Some potential fields of use include: 1. Battery-powered portable devices such as smartphones, tablets, and digital cameras. 2. Industrial control systems and automation equipment. 3. Automotive electronics, including infotainment systems and engine control units. 4. Wireless communication devices like routers and access points. 5. Medical devices and instrumentation.

Detailed and Complete Alternative Models

1. S-1172B33-U5T1G: Similar specifications but with a fixed output voltage of 3.3V.
2. S-1172B50-U5T1G: Higher output current of 500mA but with a slightly higher dropout voltage.
3. S-1172B12-I6T1G: Ultra-low quiescent current variant suitable for battery-powered applications.

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