The LTC3542ES6 is a high-efficiency, dual synchronous buck regulator from Linear Technology (now part of Analog Devices). It is designed for applications that require multiple voltage rails and high efficiency in a small footprint. This regulator is ideal for portable devices, handheld instruments, and other battery-powered applications.

Applications

• Portable devices
• Handheld instruments
• Battery-powered systems
• Point-of-load regulation
• Smartphones and tablets
• Digital cameras

Features

• Dual synchronous buck regulators
• High efficiency: Up to 95%
• Input voltage range: 2.5V to 5.5V
• Adjustable output voltage
• Output current up to 250mA per channel
• Internal compensation
• Short-circuit protection
• Over-temperature protection
• Shutdown mode with low quiescent current

Benefits

• Provides two regulated voltage outputs with high efficiency.
• Extends battery life with low quiescent current in shutdown mode.
• Offers flexible output voltage selection to meet specific application needs.
• Simplifies design with internal compensation.
• Protects the regulator and load from damage with short-circuit and over-temperature protection.
• Reduces board space with a small package.

Additional Details

The LTC3542ES6 operates at a high switching frequency to minimize the size of external components. The synchronous rectification topology improves efficiency and reduces heat dissipation. The device includes soft-start circuitry to limit inrush current during startup. The LTC3542ES6 is available in a small ThinSOT package for space-constrained applications. External capacitors and inductors are required for proper operation. The device is designed for robust performance and reliable operation in a variety of portable and handheld applications.