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LTC3780IUH from LINEAR

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LTC3780IUH

Manufacturer: LINEAR

High Efficiency, Synchronous, 4-Switch Buck-Boost Controller

Partnumber Manufacturer Quantity Availability
LTC3780IUH LINEAR 60 In Stock

Description and Introduction

High Efficiency, Synchronous, 4-Switch Buck-Boost Controller The LTC3780IUH is a high-performance, high-efficiency synchronous buck-boost switching regulator controller manufactured by Linear Technology (now part of Analog Devices).  

### **Specifications:**  
- **Input Voltage Range:** 4V to 30V (up to 36V absolute maximum)  
- **Output Voltage Range:** Adjustable from 0.8V to 30V  
- **Switching Frequency:** Adjustable from 50kHz to 400kHz  
- **Efficiency:** Up to 98%  
- **Operating Temperature Range:** -40°C to 125°C  
- **Package:** 32-Lead QFN (5mm × 5mm)  
- **Topology:** Synchronous buck-boost (4-switch)  
- **Current Mode Control:** Yes  
- **Soft-Start:** Adjustable  
- **Protection Features:** Overcurrent, undervoltage lockout (UVLO), and thermal shutdown  

### **Descriptions and Features:**  
- The LTC3780IUH is designed to regulate output voltage whether the input voltage is above, below, or equal to the output voltage.  
- It uses a current-mode architecture for fast transient response and stable operation.  
- The device supports discontinuous and continuous conduction modes (DCM/CCM).  
- It includes an adjustable soft-start function to limit inrush current.  
- The switching frequency is programmable via an external resistor.  
- It features a Power Good (PGOOD) indicator for output voltage monitoring.  
- The LTC3780IUH is suitable for applications such as battery-powered systems, automotive, telecom, and industrial power supplies.  

For detailed application information, refer to the official datasheet from Analog Devices (formerly Linear Technology).

Application Scenarios & Design Considerations

High Efficiency, Synchronous, 4-Switch Buck-Boost Controller
Partnumber Manufacturer Quantity Availability
LTC3780IUH LT 40 In Stock

Description and Introduction

High Efficiency, Synchronous, 4-Switch Buck-Boost Controller The LTC3780IUH is a high-performance, synchronous step-up/step-down switching regulator controller manufactured by Linear Technology (now part of Analog Devices).  

### **Key Specifications:**  
- **Input Voltage Range:** 4V to 30V (up to 36V absolute maximum)  
- **Output Voltage Range:** Adjustable from 0.8V to 30V  
- **Switching Frequency:** Programmable from 50kHz to 600kHz  
- **Operating Temperature Range:** -40°C to 125°C  
- **Package:** 32-Lead QFN (5mm x 5mm)  
- **Efficiency:** Up to 98% (depends on configuration)  
- **Current Mode Control:** Reduces output impedance and improves transient response  

### **Descriptions and Features:**  
- **Bidirectional Operation:** Can function as a step-up (boost) or step-down (buck) regulator.  
- **Synchronous Rectification:** Improves efficiency by replacing Schottky diodes with MOSFETs.  
- **Wide Input/Output Range:** Supports a broad range of applications.  
- **Programmable Frequency:** Allows optimization for efficiency or component size.  
- **Phase-Lockable Oscillator:** Synchronizable to an external clock (75kHz to 600kHz).  
- **Adjustable Soft-Start:** Prevents inrush current during startup.  
- **Power Good Output:** Monitors output voltage status.  
- **Low Quiescent Current:** 40µA in shutdown mode.  
- **Current Limit Protection:** Prevents damage from excessive load currents.  

This controller is commonly used in battery-powered systems, automotive applications, and industrial power supplies.  

Would you like additional details on any specific feature?

Application Scenarios & Design Considerations

High Efficiency, Synchronous, 4-Switch Buck-Boost Controller

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