Product Overview: PCA9551D,112

The PCA9551D,112 is a sophisticated LED driver manufactured by NXP Semiconductors, designed to control and dim up to eight individual LEDs via the I²C-bus and SMBus interface. This integrated circuit is part of the PCA9551 series and comes in a small 16-pin SO package, making it an ideal choice for space-constrained applications.

Key Features

• I²C Interface: Allows for easy integration with microcontrollers and processors, supporting both standard (100kHz) and fast (400kHz) I²C-bus modes.
• LED Driving Capability: Capable of driving eight LEDs individually with 256 brightness levels through Pulse Width Modulation (PWM) control for each LED output.
• Programmable Blink Rate: Offers two user-programmable blink rates and duty cycles, providing versatility in signaling and alert functions.
• Input/Output Configuration: Comes with eight LED drivers that can be programmed as either open-drain or totem pole outputs, giving users flexibility in connecting LEDs.
• Low Standby Current: Features a built-in power-saving mode, ensuring low power consumption when the device is not actively driving LEDs.

Applications

The PCA9551D,112 is suitable for a wide range of applications where visual indication is required. It is commonly used in:

• Server and telecom infrastructure for status indicators
• Industrial control panels for alert and warning lights
• Consumer electronics for backlighting and user interface enhancements
• Portable devices where battery life is critical

Technical Specifications

Parameter Value Supply Voltage 2.3V to 5.5V Operating Temperature Range -40°C to +85°C Package Type SO16 Interface Type I²C, SMBus

Overall, the PCA9551D,112 from NXP is a versatile and efficient solution for LED control in a variety of electronic devices, offering designers a compact, programmable, and easy-to-use option for enhancing their products with visual indicators.