Description

The SSD1732QL3 is a power chip designed for operating four-line MLA (Multi Line Addressing) LCD drivers. It is a CMOS charge pump-type voltage converter that can generate all the bias voltages required for the four-line MLA drive based on a single power supply input. This chip is specifically designed for systems that consist of a column (segment) driver, such as the SSD1870, and a row (common) driver, such as the SSD1881. By using this display system, modules with lower power consumption can be achieved compared to conventional driving methods.

Specifications and features

• Single Power Supply Operation: +2.4V to +3.6V
• Low current consumption
• Two step-up modes: 5X or 6X step-up by internal charge pump DC/DC converter
• Internal LCD voltage generator to generate all LCD voltages required for 4-line MLA driving
• External contrast control
• Internal –V1 discharge circuit to discharge the residual charge at the row driver negative voltage-side power supply voltage terminal –V1
• Internal “power off” function using an external signal
• Equipped internally with an LCD polarity reverse signal generator
• Polarity reversed period in the range of 2P to 17P
• Available in 48 pin QFP package (0.5 mm terminal pitch)

Application Scenarios

The SSD1732QL3 chip is commonly used in systems that require driving four-line MLA LCD displays. Its low power consumption and versatile features make it ideal for various applications, including:

• Consumer electronics devices
• Medical equipment
• Industrial control systems
• Automotive displays
• Portable electronic devices

Comparison

- Single power supply operation reduces complexity and cost

- Low current consumption improves energy efficiency

- Internal LCD voltage generator eliminates the need for additional components

- Limited range of polarity reversed period (2P to 17P)