Description

The SC16C752IB48 is a high-performance UART (Universal Asynchronous Receiver Transmitter) electronic component model. It is designed to drive an external power switch to generate programmable negative voltages, making it particularly suitable for LCD bias contrast applications. With a maximum efficiency of 90%, it can achieve efficient conversion under wide input voltage ranges. The input voltage operation range is 4V to 24V, allowing it to be powered directly by the battery pack in most battery-operated applications for greater efficiency. The output voltage can be scaled to -40V by using two external resistors. It has a switching frequency range of 100kHz to 320kHz, making it ideal for battery-powered portable equipment such as notebook and palmtop computers. The SC16C752IB48 has a low quiescent current of about 100µA, which can be reduced to 8µA in shutdown mode.

Specifications and features

• 4V to 24V input voltage operation
• Adjustable output voltage up to -40V
• Low quiescent current at 100µA
• Pulse frequency modulation maintains high efficiency (max 90%)
• 100kHz to 320kHz switching frequency
• Power-Saving shutdown mode (8µA typical)
• High efficiency with low-cost external PNP bipolar transistor

Application Scenarios

• Notebook & palmtop computers
• Pen-based data systems
• Portable data collection terminals
• Personal digital assistants
• Negative voltage supplies

Comparison

• High-performance UART for efficient conversion
• Wide input voltage range for compatibility with various applications
• Adjustable output voltage for flexibility
• Low quiescent current for power savings
• Power-saving shutdown mode for further power reduction
• High efficiency with low-cost external components

• None identified