BU9796FS-E2

Product Overview

Category: Integrated Circuit (IC)

Use: The BU9796FS-E2 is a versatile IC primarily used for voltage regulation and power management in electronic devices. It provides stable and efficient power supply to various components within a system.

Characteristics: - High efficiency - Low power consumption - Wide input voltage range - Overcurrent protection - Thermal shutdown protection

Package: The BU9796FS-E2 is available in a compact surface-mount package, making it suitable for space-constrained applications. The package ensures easy integration into circuit boards and facilitates efficient heat dissipation.

Essence: This IC is designed to regulate and stabilize voltage levels, ensuring reliable operation of electronic devices. It offers advanced features and protection mechanisms to enhance overall system performance and longevity.

Packaging/Quantity: The BU9796FS-E2 is typically supplied in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: 4.5V - 18V
• Output Voltage Range: 1.2V - 5.5V
• Maximum Output Current: 3A
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The BU9796FS-E2 has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. EN: Enable pin (active high)
4. FB: Feedback pin for output voltage regulation
5. VOUT: Output voltage pin
6. SS: Soft-start pin for gradual voltage ramp-up
7. PG: Power good indicator pin
8. NC: No connection pin

Functional Features

• Voltage Regulation: The BU9796FS-E2 ensures stable output voltage regardless of input voltage fluctuations.
• Overcurrent Protection: It incorporates overcurrent protection to safeguard connected devices from excessive current flow.
• Thermal Shutdown Protection: In case of overheating, the IC automatically shuts down to prevent damage.
• Soft-Start Function: The soft-start feature enables a gradual voltage ramp-up, reducing stress on components during power-on.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption. - Wide input voltage range allows compatibility with various power sources. - Overcurrent and thermal shutdown protection enhance system reliability. - Soft-start function prevents sudden voltage surges.

Disadvantages: - Limited maximum output current may restrict usage in high-power applications. - Requires external components for complete voltage regulation circuitry.

Working Principles

The BU9796FS-E2 utilizes a combination of switching and control circuitry to regulate the output voltage. It employs pulse-width modulation (PWM) techniques to adjust the duty cycle of the internal switch, thereby controlling the output voltage level. Feedback from the FB pin is continuously monitored to maintain the desired output voltage within specified limits.

Detailed Application Field Plans

The BU9796FS-E2 finds application in various electronic devices, including but not limited to: 1. Mobile phones 2. Tablets 3. Portable gaming consoles 4. Digital cameras 5. Portable audio players

In these devices, the IC ensures stable and efficient power supply to critical components such as microprocessors, memory modules, display panels, and audio amplifiers.

Detailed and Complete Alternative Models

1. LM2576-ADJ: A similar voltage regulator IC with adjustable output voltage and higher maximum output current.
2. TPS54332: An alternative IC offering synchronous buck conversion and higher efficiency.
3. LT1763: A low dropout voltage regulator with ultra-low quiescent current and adjustable output voltage.

These alternative models provide similar functionality to the BU9796FS-E2 but may have different specifications and package options.

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