Overview
The TPS65120RGTT is a single-inductor quadruple-output (SIMO) bias IC designed by Texas Instruments. This device is specifically tailored for powering Thin-Film Transistor Liquid Crystal Display (TFT LCD) panels in various portable electronic devices. It features a compact 16-pin QFN package with a small form factor, making it ideal for space-constrained applications. The TPS65120RGTT integrates multiple voltage regulators, including a main output, positive and negative outputs, and an auxiliary linear regulator, all managed through a single inductor.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V |
| Main Output (VMAIN) | Adjustable, 3.0 V to 5.6 V / 25 mA |
| Positive Output (VGH) | Adjustable up to 20 V / 2 mA |
| Negative Output (VGL) | Adjustable down to -18 V / 2 mA |
| Auxiliary Linear Regulator | 1.8 V / 3.3 V |
| Accuracy | ±0.8% (VMAIN), ±3% (VGH and VGL) |
| Efficiency | Up to 83% |
| Package | 16-Pin QFN (3 × 3 × 0.9 mm) |
| Operating Temperature Range | -40°C to 85°C |
| Maximum Junction Temperature | 135°C |
Key Features
- Single-inductor quadruple-output design for efficient power management.
- Post-regulated main output for low ripple voltage (5mVPP).
- Integrated LDO regulator for high accuracy and efficiency.
- Programmable power sequencing to ensure proper startup and shutdown of outputs.
- Internal soft-start circuit to limit inrush current during startup.
- Output short circuit protection and fault monitoring with latched shutdown.
- Compact 16-pin QFN package suitable for space-constrained designs.
Applications
- Cell phones and smartphones.
- PDAs and pocket PCs.
- Portable DVD players.
- Digital still cameras and camcorders.
- Handheld instruments.
- Portable GPS and car navigation systems.
Q & A
- What is the input voltage range of the TPS65120RGTT?
The input voltage range is 2.5 V to 5.5 V. - What are the adjustable voltage ranges for the main output (VMAIN)?
The main output (VMAIN) is adjustable from 3.0 V to 5.6 V with a maximum current of 25 mA. - What is the maximum voltage for the positive output (VGH)?
The positive output (VGH) can be adjusted up to 20 V with a maximum current of 2 mA. - What is the minimum voltage for the negative output (VGL)?
The negative output (VGL) can be adjusted down to -18 V with a maximum current of 2 mA. - What is the efficiency of the TPS65120RGTT?
The efficiency of the TPS65120RGTT can be up to 83%. - What is the package type and size of the TPS65120RGTT?
The TPS65120RGTT comes in a 16-pin QFN package with dimensions of 3 × 3 × 0.9 mm. - What is the operating temperature range of the TPS65120RGTT?
The operating temperature range is -40°C to 85°C. - Does the TPS65120RGTT have built-in protection features?
Yes, it includes output short circuit protection and fault monitoring with latched shutdown. - How does the TPS65120RGTT manage power sequencing?
The device features programmable power sequencing to ensure proper startup and shutdown of outputs. - What types of devices typically use the TPS65120RGTT?
The TPS65120RGTT is used in various portable electronic devices such as cell phones, PDAs, portable DVD players, and handheld instruments.
