LTC3784MPGN#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High Efficiency - Wide Input Voltage Range - Adjustable Output Voltage - Synchronous Buck-Boost Converter - Constant Frequency Operation - Low Quiescent Current - Programmable Soft-Start - Overvoltage and Overcurrent Protection

Package: 16-Lead Plastic SSOP (GN) Package

Essence: The LTC3784MPGN#PBF is a high-performance power management IC designed for various applications that require efficient power conversion.

Packaging/Quantity: The LTC3784MPGN#PBF is available in a plastic SSOP package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4V to 60V
• Output Voltage Range: Adjustable from 0.8V to 60V
• Maximum Output Current: Up to 20A
• Switching Frequency: 100kHz to 500kHz
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LTC3784MPGN#PBF has 16 pins, each serving a specific function. Here is the detailed pin configuration:

1. VIN: Input Voltage
2. PGND: Power Ground
3. SW: Switch Node Connection
4. FB: Feedback Voltage Input
5. VCC: Supply Voltage for Internal Circuitry
6. GATE: Gate Drive Output
7. SYNC/MODE: External Clock Synchronization or Mode Selection
8. SS/TRK: Soft-Start/Tracking Control
9. VOUT: Output Voltage
10. ITH: Current Sense Threshold Setting
11. RT/CLKOUT: Oscillator Frequency Setting or Clock Output
12. SS/TRK: Soft-Start/Tracking Control
13. VCC: Supply Voltage for Internal Circuitry
14. GATE: Gate Drive Output
15. SW: Switch Node Connection
16. PGND: Power Ground

Functional Features

The LTC3784MPGN#PBF offers the following functional features:

1. Synchronous Buck-Boost Conversion: Allows efficient power conversion from a wide input voltage range to an adjustable output voltage.
2. Constant Frequency Operation: Ensures stable and predictable operation under varying load conditions.
3. Low Quiescent Current: Minimizes power consumption during standby or light load conditions.
4. Programmable Soft-Start: Enables controlled startup of the converter, reducing inrush current and stress on components.
5. Overvoltage and Overcurrent Protection: Safeguards the circuit and connected devices from excessive voltage or current.

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Wide input voltage range - Adjustable output voltage - Compact package size - Comprehensive protection features

Disadvantages: - Limited maximum output current compared to some other power management ICs - Requires careful consideration of thermal management due to high power dissipation

Working Principles

The LTC3784MPGN#PBF operates as a synchronous buck-boost converter, providing step-up and step-down voltage conversion. It utilizes high-frequency switching to efficiently transfer power between the input and output stages. The feedback loop ensures the output voltage remains within the desired range by adjusting the duty cycle of the switching signal. The soft-start feature gradually ramps up the output voltage during startup to prevent excessive inrush current.

Detailed Application Field Plans

The LTC3784MPGN#PBF is suitable for various applications that require efficient power management, including but not limited to: - Battery-powered devices - Industrial equipment - Automotive electronics - Telecommunications systems - Renewable energy systems

Detailed and Complete Alternative Models

1. LTC3784EUFD#PBF: 28-Lead Plastic QFN Package, Higher Maximum Output Current (Up to 30A)
2. LTC3784IUFD#PBF: 28-Lead Plastic QFN Package, Higher Maximum Output Current (Up to 30A), Extended Temperature Range (-40°C to 150°C)
3. LTC3784MPMS8#PBF: 8-Lead Plastic MSOP Package, Lower Maximum Output Current (Up to 10A)

These alternative models offer similar functionality with slight variations in package type, maximum output current, and temperature range.

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