S-1721E1528-M6T1G

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics:
  • Low dropout voltage
  • High output voltage accuracy
  • Low quiescent current
  • Thermal shutdown protection
• Package: SOT-23-5
• Essence: Linear voltage regulator
• 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 (typical) at 150mA load current
• Output Current: 150mA (maximum)
• Quiescent Current: 45µA (typical)
• Line Regulation: ±0.2% (typical)
• Load Regulation: ±0.4% (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-1721E1528-M6T1G IC has a total of five pins arranged as follows:

```

---

| | --| Vout GND|-- Pin 1: Ground (GND) --| Vin NC |-- Pin 2: No Connection (NC) --| EN Vout|-- Pin 3: Output Voltage (Vout) --| FB Vin |-- Pin 4: Input Voltage (Vin) --| GND EN |-- Pin 5: Enable (EN) |___________| ```

Functional Features

• Low dropout voltage ensures stable operation even with small input-output voltage differentials.
• High output voltage accuracy provides precise voltage regulation for sensitive applications.
• Low quiescent current minimizes power consumption, making it suitable for battery-powered devices.
• Thermal shutdown protection prevents the IC from overheating and ensures safe operation.

Advantages

• Compact SOT-23-5 package allows for space-efficient PCB design.
• Wide input voltage range enables compatibility with various power sources.
• Excellent line and load regulation characteristics ensure stable output voltage under different operating conditions.
• Low quiescent current extends battery life in portable applications.
• Thermal shutdown protection enhances reliability and safeguards against thermal damage.

Disadvantages

• Limited maximum output current of 150mA 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-1721E1528-M6T1G is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the feedback voltage (FB) with a reference voltage to control the pass transistor's conduction. When the output voltage drops below the desired level, the regulator increases the pass transistor's conductivity to maintain a stable output voltage. Conversely, if the output voltage exceeds the set value, the regulator reduces the pass transistor's conductivity to bring it back within the desired range.

Detailed Application Field Plans

The S-1721E1528-M6T1G is commonly used in various electronic devices and systems, including but not limited to: - Battery-powered devices: Portable audio players, handheld gaming consoles, and wireless communication devices. - Automotive electronics: Infotainment systems, navigation units, and dashboard displays. - Industrial equipment: Sensors, actuators, and control systems. - Consumer electronics: Smartphones, tablets, and digital cameras. - Medical devices: Blood glucose meters, wearable health monitors, and medical imaging equipment.

Detailed and Complete Alternative Models

• S-1711 Series: Similar voltage regulators with different output current ratings.
• S-1721 Series: Variants with different output voltage ranges.
• S-1701 Series: Voltage regulators with additional features like adjustable output voltage and power-on reset.

Note: The above list is not exhaustive, and there are several alternative models available from various manufacturers that offer similar functionality.

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