Introducing the LT8616HFE: A Dual Channel Synchronous Step-Down Regulator

The LT8616HFE from Analog Devices Inc. is a highly efficient, dual channel, synchronous step-down switching regulator designed to deliver top performance in a wide range of applications. This compact and robust component is an ideal solution for automotive, industrial, and telecommunications power supply systems that demand low quiescent current, high efficiency, and a small footprint.

Key Features

• Dual Channel Output: The LT8616HFE features two independent step-down channels capable of delivering 2.5A and 1.5A respectively, which can be paralleled for a single output with higher current capability.
• Wide Input Voltage Range: It operates from an input voltage range of 3.4V to 42V, making it suitable for applications with input sources ranging from single-cell Li-Ion batteries to automotive inputs.
• High Efficiency: With its synchronous rectification topology, the LT8616HFE achieves up to 95% efficiency, reducing power loss and heat dissipation, which is critical for thermal management.
• Fast Minimum On-Time: The device offers a low minimum on-time of just 45ns, allowing for high step-down ratios at high switching frequencies, which is beneficial for applications requiring fast transient response.
• Low Quiescent Current: The LT8616HFE boasts a low quiescent current of 2.5μA with one channel on and 3.3μA with both channels on, optimizing battery life for battery-powered systems.
• Adjustable Switching Frequency: The switching frequency is programmable from 200kHz to 3MHz, which can be synchronized to an external clock to minimize interference with sensitive RF or audio systems.

Robust Protection Features

• Thermal Protection: The device includes internal thermal shutdown to protect against overheating.
• Overvoltage Protection: It provides overvoltage lockout and protection, ensuring the stability and safety of the power system.
• Current Mode Operation: The LT8616HFE's current mode operation provides excellent line and load transient response and cycle-by-cycle current limiting.

Compact and Durable Design

The LT8616HFE comes in a compact 28-lead TSSOP package with exposed pad for improved thermal performance. It is designed to meet the rigorous standards of the automotive industry, including a temperature range of -40°C to 125°C, which ensures reliable operation under extreme conditions.

With its combination of dual channel flexibility, high efficiency, low quiescent current, and a compact footprint, the LT8616HFE is a versatile power management solution that can meet the needs of a diverse array of electronic systems.