SP34063AEN-L/TR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High efficiency, adjustable output voltage, low dropout voltage
• Package: SOP-8 (Small Outline Package)
• Essence: Buck-Boost Switching Regulator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 3V to 40V
• Output Voltage Range: 1.25V to 38V
• Switching Frequency: Up to 100kHz
• Maximum Output Current: 1.5A
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SP34063AEN-L/TR IC has a total of 8 pins:

1. SW: Switch pin for controlling the buck-boost operation.
2. GND: Ground reference for the IC.
3. FB: Feedback pin for adjusting the output voltage.
4. COMP: Compensation pin for stability control.
5. VCC: Power supply input pin for the IC.
6. SS/TR: Soft-start/Shutdown pin for controlling the startup and shutdown operations.
7. NC: No connection pin.
8. VOUT: Output voltage pin.

Functional Features

• Buck-boost switching regulator capable of stepping up or stepping down the input voltage.
• Adjustable output voltage through external resistor divider network connected to the FB pin.
• High efficiency due to synchronous rectification.
• Low dropout voltage enables efficient power conversion even with low input-output voltage differentials.
• Built-in protection features such as over-temperature, over-current, and short-circuit protection.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile applications.
• Adjustable output voltage provides flexibility in various power supply designs.
• High efficiency leads to reduced power dissipation and longer battery life.
• Compact SOP-8 package enables space-saving PCB layouts.
• Built-in protection features enhance system reliability.

Disadvantages

• Limited maximum output current of 1.5A may not be suitable for high-power applications.
• Switching frequency up to 100kHz may introduce audible noise in some sensitive applications.
• Requires external components for proper operation, increasing the overall BOM cost.

Working Principles

The SP34063AEN-L/TR is a buck-boost switching regulator that utilizes pulse-width modulation (PWM) to regulate the output voltage. It operates by switching an internal power MOSFET between the buck and boost modes based on the feedback received from the FB pin. The switching action allows the IC to step up or step down the input voltage to maintain a stable output voltage, which can be adjusted using an external resistor divider network connected to the FB pin.

Detailed Application Field Plans

The SP34063AEN-L/TR finds applications in various fields, including:

1. Battery-powered devices: Provides efficient voltage regulation for portable electronics, such as smartphones, tablets, and handheld gaming consoles.
2. Automotive electronics: Enables stable power supply for automotive infotainment systems, lighting modules, and other onboard electronics.
3. Industrial equipment: Used in motor control circuits, LED drivers, and power supplies for industrial automation systems.
4. Renewable energy systems: Facilitates voltage conversion in solar-powered applications, wind turbines, and battery charging systems.
5. Consumer electronics: Suitable for power adapters, set-top boxes, routers, and other consumer electronic devices requiring regulated power supply.

Detailed and Complete Alternative Models

1. LM2576-ADJ: Adjustable voltage regulator with similar specifications and package.
2. LT3470: Buck-boost switching regulator with higher output current capability.
3. MC34063A: Non-synchronous buck-boost converter with adjustable output voltage.
4. TPS63020: Highly efficient buck-boost converter with integrated power MOSFETs.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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