DS3991Z+PP

Overview

The DS3991Z+PP is a single-channel cold-cathode fluorescent lamp (CCFL) controller manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of 4.5 V to 5.5 V and draws a supply current of 5 mA. The device supports dimming functionality and functions at frequencies between 40 kHz and 80 kHz. It is housed in a 16-SOIC package with a width of 3.90 mm and is designed for surface-mount installation. The component is rated for an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates control logic for single-channel CCFL backlight applications
• Supports analog or PWM dimming capabilities for brightness adjustment
• Operates with standard 5 V power supply systems

Applications

• LCD panel backlighting in portable electronics
• Industrial display modules requiring CCFL illumination
• Medical equipment displays

Procurement Notes

Verify the exact suffix PP against official datasheets, as it may indicate specific tape-and-reel packaging or testing variations distinct from the standard tube version. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as legacy parts may have varying environmental declarations. Check for obsolescence notices or last-time-buy dates, as this component series is often discontinued. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when a single-channel CCFL driver is required for space-constrained designs using SOIC packages. Compare against the DS3994Z+ if multiple channels are needed, noting the pinout differences. Verify that the 40-80 kHz frequency range matches the transformer specifications of the target display module. Consider thermal management requirements given the 5 mA supply current and enclosed package type.

Part Context

This part belongs to the Maxim Integrated CCFL controller family, designed for driving cold-cathode lamps in liquid crystal displays. The DS3991Z+PP represents a single-channel variant, contrasting with multi-channel counterparts like the DS3994. These controllers were widely used before the industry transitioned to LED-based backlighting solutions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.