The ILI4003D is a highly integrated DC-DC step-down converter manufactured by Richtek USA Inc. It is designed to provide efficient power conversion for various electronic devices. The converter features a wide input voltage range and a high switching frequency, allowing for a compact and cost-effective solution. It is commonly used in portable devices, battery-powered systems, and other applications where power efficiency and size are critical.

Applications

• Portable devices (e.g., smartphones, tablets)
• Battery-powered systems
• Power banks
• Wireless communication devices
• Embedded systems

Features

• High efficiency up to 95%
• Wide input voltage range
• Adjustable output voltage
• Integrated synchronous rectifier
• Over-current protection (OCP)
• Short-circuit protection (SCP)
• Over-temperature protection (OTP)
• Under-voltage lockout (UVLO)
• Small package size

Benefits

• Extended battery life due to high efficiency
• Stable and reliable power supply
• Protection against various fault conditions
• Reduced board space
• Simplified system design
• Lower system cost

Technical Specifications

The ILI4003D operates with an input voltage range from 2.5V to 5.5V. The output voltage can be adjusted using external resistors. The switching frequency is typically 1.5 MHz. The converter integrates a synchronous rectifier, which improves efficiency and reduces power dissipation. The device is available in a small package, such as a WDFN or QFN. The over-current protection (OCP) threshold is typically set to 2A. The quiescent current is very low, which helps to minimize power consumption in standby mode. The operating temperature range is typically -40°C to +85°C.

The ILI4003D also incorporates various protection features, such as over-temperature protection (OTP) and under-voltage lockout (UVLO). These features ensure safe and reliable operation under various conditions. The converter is easy to use and requires only a few external components. It is a cost-effective solution for providing efficient power conversion in a wide range of applications.