MP1531DQ-LF-P

Overview

The MP1531DQ-LF-P is a low-power, three-output step-up switching regulator designed for TFT LCD bias applications. It operates with an input voltage range of 2.7V to 5.5V and provides adjustable output voltages from 2.7V to 22V. The device delivers up to 500mA output current across its three channels. Key electrical parameters include a quiescent current of 1.2mA and a fixed switching frequency of 250kHz. It is housed in a 16-lead QFN package with an exposed pad and supports operation within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a triple-output boost converter topology optimized for driving TFT LCD panel bias circuits.
• Features low quiescent current consumption to enhance system efficiency during standby or active modes.
• Includes built-in protection mechanisms such as soft-start and thermal shutdown for reliable operation.

Applications

• TFT LCD panel bias power supply
• Portable electronic display modules
• Mobile device backlighting systems

Procurement Notes

Verify the specific suffix 'P' against official Monolithic Power Systems documentation to confirm packaging configuration, as datasheets may list 'Z' variants. Confirm RoHS compliance status and lead-free specifications directly with the manufacturer or authorized distributors prior to ordering. Ensure the component lifecycle status is reviewed, as some MPS components are marked as Not Recommended for New Designs.

Selection Notes

Select this component when designing power solutions for small to medium-sized TFT displays requiring multiple bias rails from a single low-voltage source. The 250kHz switching frequency allows for the use of compact external inductors and capacitors. Evaluate the 500mA total current capability against the specific load requirements of the target LCD panel to ensure adequate headroom.

Part Context

The MP1531 belongs to the MPS family of specialized power management ICs tailored for display applications. Unlike general-purpose regulators, it integrates multiple outputs into a single solution to reduce board space and component count. The QFN-16 package facilitates surface-mount assembly while providing thermal dissipation through the exposed pad.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data. Consult MPS technical support for direct replacements if the MP1531DQ-LF-P is obsolete or unavailable.