LX8117-28CDD

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Thermal shutdown protection - Short circuit current limit - Wide input voltage range

Package: CDD Package (Compact Dual Flat No-Lead)

Essence: The LX8117-28CDD is a voltage regulator IC designed to provide a stable and regulated output voltage for various electronic devices.

Packaging/Quantity: The LX8117-28CDD is available in a compact dual flat no-lead package. It is typically sold in reels or trays containing multiple units.

Specifications

• Input Voltage Range: 2.5V - 6V
• Output Voltage: 2.8V
• Dropout Voltage: 0.3V @ 1A
• Output Current: Up to 1.5A
• Quiescent Current: 75µA
• Line Regulation: ±0.2%
• Load Regulation: ±0.4%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LX8117-28CDD has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. EN: Enable pin (active high)
4. BYP: Bypass capacitor pin
5. VOUT: Output voltage pin

Functional Features

• Low dropout voltage: The LX8117-28CDD can regulate the output voltage even when the input voltage is close to the desired output voltage, minimizing power loss.
• High output current capability: With a maximum output current of 1.5A, the LX8117-28CDD can power a wide range of electronic devices.
• Thermal shutdown protection: The IC includes a built-in thermal shutdown feature that protects it from overheating.
• Short circuit current limit: The LX8117-28CDD limits the output current in case of a short circuit, preventing damage to the device.
• Wide input voltage range: It can accept input voltages ranging from 2.5V to 6V, making it suitable for various applications.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient power conversion. - High output current capability allows for powering demanding devices. - Thermal shutdown protection prevents overheating and damage. - Short circuit current limit protects the device and connected components. - Wide input voltage range provides flexibility in application.

Disadvantages: - Limited output voltage options (fixed at 2.8V). - May require additional external components for specific applications.

Working Principles

The LX8117-28CDD is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage obtained from a voltage divider network. The pass transistor adjusts its resistance to maintain a constant output voltage despite changes in the input voltage or load conditions.

Detailed Application Field Plans

The LX8117-28CDD finds applications in various electronic devices that require a stable and regulated power supply. Some potential application fields include: 1. Mobile devices: Smartphones, tablets, portable media players. 2. IoT devices: Wearable devices, smart home sensors. 3. Automotive electronics: Infotainment systems, navigation devices. 4. Industrial equipment: Control systems, measurement instruments. 5. Consumer electronics: Digital cameras, audio/video equipment.

Detailed and Complete Alternative Models

1. LX8117-33CDD: Provides a fixed output voltage of 3.3V.
2. LX8117-50CDD: Provides a fixed output voltage of 5.0V.
3. LX8117-ADJ: Adjustable output voltage version with external resistors.

These alternative models offer different fixed output voltages or adjustable options to suit specific application requirements.

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