TPS65138ADRCR

Overview

The TPS65138ADRCR is a dual-output AMOLED display power supply from Texas Instruments, designed to drive displays requiring positive and negative supply rails. It operates within an input voltage range of 2.9V to 4.5V and delivers up to 300mA output current with 0.8% output voltage accuracy. The device features excellent line transient regulation and utilizes a fixed-frequency PWM control topology. Packaged in a compact 10-VSON (3x3) format, it supports independent operation of positive and negative outputs for non-symmetric requirements.

Feature Summary

• Dual adjustable output capability providing both positive and negative supply rails for AMOLED displays
• Independent enable inputs allowing flexible power-up and power-down sequencing for each rail
• Integrated protection mechanisms including internal current limiting, overvoltage protection, and thermal shutdown
• External PFET control support enabling complete disconnection of the output when disabled

Applications

• AMOLED display power systems for mobile devices and monitors
• Personal electronics such as laptops, gaming consoles, and handhelds
• Building automation interfaces including elevators and thermostats
• Industrial human-machine interfaces (HMI) and test equipment

Procurement Notes

Verify the specific suffix ADRCR corresponds to the 10-VSON package and tape-and-reel configuration. Confirm that the 2.9V–4.5V input range aligns with your system's battery or fixed rail specifications. Ensure compatibility with the required 300mA load current and check for any regional compliance certifications relevant to your deployment region.

Selection Notes

Select this component when driving AMOLED panels requiring asymmetric or bipolar voltage rails from a single low-voltage source. It is suitable for space-constrained designs due to its small footprint. Consider alternatives if input voltages exceed 4.5V or if higher continuous current than 300mA is required. Verify that the fixed switching frequency meets EMI constraints for your application.

Part Context

This part belongs to the TPS6513x family of DC-DC converters optimized for display drivers. While the broader family includes automotive-grade variants like the TPS6513x-Q1 with wider temperature ranges and AEC-Q100 qualification, the standard TPS65138 focuses on consumer and industrial electronics. The ADRCR variant specifically denotes the commercial grade with the VSON packaging.

Replacement Considerations

Direct substitutes within the same family include other TPS6513x variants, though pinouts and electrical characteristics may differ. Check datasheets for compatible packages and output current ratings. No specific cross-reference part numbers are confirmed in public documentation; verify functional equivalence carefully before substitution.