TPS65131RGET

Voltage Regulators - DC DC Switching Regulators Overview

The TPS65131RGET is a dual-output DC-DC converter from Texas Instruments designed for LCD bias applications. It generates positive and negative adjustable outputs ranging up to +15V and down to -15V, respectively. The device operates with an input voltage range of 2.7V to 5.5V and features a typical switching current limit of 2A. It utilizes a fixed-frequency PWM control topology with a minimum switching frequency of 1.25MHz. The component is housed in a compact 4mm x 4mm VQFN-24 package with exposed thermal pad.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual independent adjustable outputs providing positive and negative rails for asymmetric requirements
• Integrated power management features including internal current limiting, overvoltage protection, and thermal shutdown
• Flexible power sequencing enabled by independent enable pins for controlled startup and shutdown
• Low quiescent current operation supporting extended battery life in portable devices

Voltage Regulators - DC DC Switching Regulators Applications

• LCD and AMOLED display drivers
• Portable personal electronics such as laptops and handheld gaming devices
• Industrial human-machine interfaces (HMI) and test equipment
• General split-rail power supplies for data acquisition systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix RGET against the manufacturer's latest datasheet to confirm package dimensions and pinout compatibility. Check official channels for lifecycle status updates, as this part may be subject to obsolescence notices. Ensure that any substitute components maintain identical electrical characteristics and thermal performance specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing circuits requiring simultaneous positive and negative bias voltages from a single low-voltage source. It is suitable for space-constrained designs due to its small footprint. Consider the maximum output current capabilities relative to the specific input-to-output voltage ratio to ensure efficient operation within the specified thermal limits.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the TPS6513x family of LCD bias generators. It shares architectural similarities with other members like the TPS65130 and TPS65132 but offers specific output configurations tailored for dual-rail requirements. The family is commonly used in consumer electronics and industrial displays where reliable high-voltage generation from low-voltage batteries is essential.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Official substitutes include TPS65131RGER and TPS65131RGETG4. Verify pin compatibility and thermal resistance values before implementation.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the recommended startup sequence for the outputs?

The device requires VIN to be established first, followed by VPOS, and then VNEG. Independent enable pins allow for flexible control over this power sequencing.

How are the output voltages adjusted?

Both positive and negative outputs are adjustable via external resistor divider networks connected to their respective feedback pins, allowing for custom voltage settings within the specified ranges.