ISL78302ARCWZ-T

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High efficiency - Low power consumption - Wide input voltage range - Multiple output channels - Overcurrent and overvoltage protection - Thermal shutdown protection

Package: RW-20 (20-pin Thin Shrink Small Outline Package)

Essence: The ISL78302ARCWZ-T is a power management IC designed for various applications that require multiple power supply voltages. It integrates multiple functions into a single chip, providing efficient power conversion and regulation.

Packaging/Quantity: The ISL78302ARCWZ-T is available in tape and reel packaging, with 250 units per reel.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: Adjustable from 0.8V to 3.6V
• Number of Output Channels: 3
• Maximum Output Current: 600mA per channel
• Operating Temperature Range: -40°C to +85°C
• Efficiency: Up to 95%
• Quiescent Current: 30µA (typical)

Detailed Pin Configuration

The ISL78302ARCWZ-T has a total of 20 pins. The pin configuration is as follows:

1. VIN1: Input voltage for Channel 1
2. VIN2: Input voltage for Channel 2
3. VIN3: Input voltage for Channel 3
4. GND: Ground
5. VOUT1: Output voltage for Channel 1
6. VOUT2: Output voltage for Channel 2
7. VOUT3: Output voltage for Channel 3
8. EN1: Enable control for Channel 1
9. EN2: Enable control for Channel 2
10. EN3: Enable control for Channel 3
11. FB1: Feedback voltage for Channel 1
12. FB2: Feedback voltage for Channel 2
13. FB3: Feedback voltage for Channel 3
14. SS/TRK: Soft-start/Tracking control
15. PGND: Power ground
16. VCC: Supply voltage input
17. BST: Boost capacitor connection
18. SW1: Switch node for Channel 1
19. SW2: Switch node for Channel 2
20. SW3: Switch node for Channel 3

Functional Features

• Integrated synchronous buck converters
• Adjustable output voltages
• Independent enable controls for each channel
• Soft-start and tracking capability
• Overcurrent and overvoltage protection
• Thermal shutdown protection

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Compact size and integration of multiple functions - Wide input voltage range allows flexibility in power supply selection - Overcurrent and overvoltage protection ensures system safety - Thermal shutdown protection prevents IC damage due to excessive heat

Disadvantages: - Limited maximum output current per channel (600mA) - Not suitable for high-power applications

Working Principles

The ISL78302ARCWZ-T operates as a power management IC by converting the input voltage to multiple regulated output voltages. It utilizes synchronous buck converters to achieve high efficiency power conversion. The enable controls allow independent operation of each channel, providing flexibility in power supply configuration. The soft-start and tracking feature ensures smooth startup and regulation of the output voltages. The IC also incorporates various protection mechanisms, such as overcurrent, overvoltage, and thermal shutdown, to safeguard the system and the IC itself.

Detailed Application Field Plans

The ISL78302ARCWZ-T is widely used in various applications that require multiple power supply voltages. Some of the common application fields include:

1. Portable electronic devices: Smartphones, tablets, portable gaming consoles
2. Industrial control systems: PLCs (Programmable Logic Controllers), motor drives, robotics
3. Automotive electronics: Infotainment systems, navigation systems, advanced driver-assistance systems (ADAS)
4. IoT (Internet of Things) devices: Wearables, smart home devices, sensor nodes

Detailed and Complete Alternative Models

1. ISL78301ARCWZ-T: Similar to ISL78302ARCWZ-T but with 2 output channels instead of 3.
2. ISL78303ARCWZ-T: Similar to ISL78302ARCWZ-T but with 4 output channels instead of 3.
3. ISL78304ARCWZ-T: Similar to ISL78302ARCWZ-T but with 5 output channels instead of 3.

These alternative models provide options for different system requirements and power supply configurations.

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