Overview: High-Performance LCD Bias Supply with Dual Outputs
Die TPS65122 from Texas Instrumente is a compact, integrated TFT LCD bias power supply IC that simplifies system design by delivering both positive and negative voltages required by LCD panels. With an input range of 2.7V to 5.5V and built-in charge pump topologies, this device eliminates the need for external inductors, reducing BOM cost and saving board space.
Its WQFN packaging and low-power architecture make it well-suited for mobile and portable systems. With enhanced protection mechanisms, the TPS65122 ensures robust performance in industrial and consumer applications.
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Key Technical Specifications of TPS65122
| Parameter | Spezifikation |
|---|---|
| Eingangsspannungsbereich | 2,7V bis 5,5V |
| Ausgangsspannung | Dual (positive and negative, adjustable) |
| Topology | Charge Pump |
| Ruhestrom | Low, ideal for battery-powered systems |
| Protections | Thermische Abschaltung, Überstromschutz |
| Paket | WQFN |
Why Choose TPS65122 vs Standard LCD Power ICs?
The TPS65122 is engineered for space- and power-constrained environments where efficient LCD biasing is essential. Unlike bulkier solutions that require inductors or additional regulators, it offers a compact dual-output design with integrated protection. This helps designers save board space and simplify system layout.
Backed by IC-Hersteller‘s trusted inventory and quality control, engineers can rely on consistent supply and performance for volume production and prototyping.
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Expanded Technical Parameters
| Feature | Beschreibung |
|---|---|
| Eingangsspannungsbereich | 2,7V bis 5,5V |
| Output Voltages | Positive and Negative (adjustable) |
| Topology | Charge Pump |
| Paket | WQFN |
| Protection | Thermal Shutdown, Overcurrent |
| Typical Use Cases | Compact TFT LCD Modules |
Typical Applications of TPS65122
- Medical displays in portable diagnostic equipment
- Industrial LCD operator panels
- Consumer handheld electronics with embedded LCD screens
Häufig gestellte Fragen (FAQ)
What is the function of the TPS65122?
It provides dual output voltages (positive and negative) specifically tailored to bias TFT LCD panels in space-constrained applications.
Is the TPS65122 suitable for low-power designs?
Yes, thanks to its low quiescent current and efficient charge pump operation, it is ideal for battery-operated systems requiring extended run-time.
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Does this IC require external inductors?
No. The integrated charge pump topology eliminates the need for external inductors, simplifying layout and reducing cost.
What protections are built into the TPS65122?
It includes both thermal shutdown and overcurrent protection to guard against faults during abnormal operating conditions.
What makes this IC ideal for portable LCD applications?
The combination of compact WQFN packaging, wide input range, and integrated features make it an efficient and reliable choice for powering LCD displays in portable devices.
