S-1172B37-U5T1G

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, High Accuracy, Low Quiescent Current
• Package: SOT-23-5
• Essence: Regulates input voltage to a stable output voltage
• 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
• Quiescent Current: 30µA (typical)
• Load Regulation: ±0.5% (typical)
• Line Regulation: ±0.3% (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-1172B37-U5T1G has a total of five pins arranged in the following configuration: 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 allows for efficient regulation even with small input-output voltage differentials.
• High accuracy ensures precise output voltage regulation.
• Low quiescent current minimizes power consumption during standby or idle modes.
• Built-in overcurrent protection safeguards the IC and connected devices.
• Thermal shutdown feature prevents overheating and damage.

Advantages

• Wide input voltage range enables compatibility with various power sources.
• Compact SOT-23-5 package offers space-saving benefits.
• Excellent load and line regulation ensure stable output voltage under varying conditions.
• Low quiescent current extends battery life in portable applications.
• Overcurrent protection enhances system reliability.

Disadvantages

• Limited output current capability (100mA maximum).
• Dropout voltage may be relatively high for certain low-power applications.
• Temperature range is limited to -40°C to +85°C.

Working Principles

The S-1172B37-U5T1G is a linear voltage regulator that utilizes a PNP transistor as the pass element. It operates by comparing the reference voltage with the feedback voltage obtained from the output. The error amplifier adjusts the pass element's resistance to maintain the desired output voltage, compensating for load and line variations.

Detailed Application Field Plans

The S-1172B37-U5T1G finds applications in various electronic devices, including: 1. Battery-powered devices: Portable audio players, handheld gaming consoles, and digital cameras. 2. Communication systems: Mobile phones, wireless routers, and Bluetooth headsets. 3. Industrial equipment: Sensors, control systems, and data loggers. 4. Automotive electronics: Infotainment systems, navigation units, and engine control modules. 5. Medical devices: Blood glucose meters, patient monitoring systems, and wearable health trackers.

Detailed and Complete Alternative Models

1. S-1172B33-U5T1G: Similar specifications but with a lower output voltage range of 1.2V to 3.3V.
2. S-1172B50-U5T1G: Similar specifications but with a higher output voltage range of 1.2V to 5.0V.
3. S-1172B12-U5T1G: Similar specifications but with a lower output voltage range of 1.2V to 1.8V.

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