CH452L LED driver

Description:

The CH452L is a versatile digital integrated circuit designed to drive multiple LEDs and control a keypad matrix. It simplifies LED control by offering a serial interface and built-in decoding logic, reducing the number of pins required compared to parallel interfaces. Additionally, the CH452L can be connected to a keypad matrix with up to four rows and four columns, providing combined LED display and button control functionality in a single chip.

Key Features:

• Drives up to common-anode LEDs (typical range 4-8) for numeric or alphanumeric displays
• Serial interface (typically SPI compatible) for efficient data transfer
• Built-in scanning circuitry eliminates the need for external decoders
• Optional keypad matrix interface (up to 4×4) for integrated button control
• Wide operating voltage range (typically 5V to 15V)
• Low power consumption

Technical Specifications:

• Package Type: SOP-24
• Input Voltage: 5V to 15V (typical)
• Output Current:  typically range from 10mA to 20mA
• Serial Interface: SPI compatible (verify datasheet for exact protocol)
• Operating Temperature Range: 0°C to +70°C (commercial grade)

Applications:

• LED displays for clocks, timers, meters, and other electronic devices
• Simple control panels with LED readouts
• Educational and hobbyist projects with LED displays and button controls

Datasheet:

For detailed technical specifications, programming information, and application notes, refer to the CH452L Datasheet