Overview
The TPS54120RGYR, produced by Texas Instruments, is a highly integrated power supply component that combines the efficiency of a step-down switching (dc-dc) converter with the low-noise characteristics of a low-dropout regulator (LDO). This device is designed to deliver ultra-low noise power rails, making it ideal for noise-sensitive applications. It supports a wide input voltage range of 4.5 V to 17 V and can provide a continuous output current of 1 A. The output voltage can be set from 0.8 V to 6.0 V using external resistors. The TPS54120RGYR features softstart, switching frequency synchronization, and a power-good signal, enhancing its versatility and reliability in various applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | VQFN (RGY) |
| Pins | 24 |
| Operating Temperature Range (°C) | -40 to 125 |
| Input Voltage Range | 4.5 V to 17 V |
| Output Voltage Range | 0.8 V to 6.0 V |
| Continuous Output Current | 1 A |
| Efficiency | 72% at 1 A, 12V Input |
| Noise Output | 17 µV RMS at 100 Hz to 1 MHz |
| Switching Frequency Range | 200 kHz to 1.2 MHz |
| Package Dimensions (mm) | 3.5 × 5.5 |
Key Features
- Low-Noise Output: 17 µV RMS at 100 Hz to 1 MHz
- Wide Input Voltage Range: 4.5 V to 17 V
- High Efficiency: 72% at 1 A, 12V Input
- Excellent Load/Line Transient Response
- Synchronizable to External Clock: 200 kHz to 1.2 MHz
- Small Package: 3.5 mm × 5.5 mm QFN-24
- Softstart, Switching Frequency Synchronization, and Power-Good Signal
Applications
- Telecom Infrastructure: Pico and Femto Base Stations
- Powering Sensitive Clocking Distribution Circuits
- Test and Measurement Equipment
- Powering RF Components
- Communication, Audio, and Other Noise-Sensitive Equipment
Q & A
- What is the input voltage range of the TPS54120RGYR? The input voltage range is from 4.5 V to 17 V.
- What is the maximum continuous output current of the TPS54120RGYR? The maximum continuous output current is 1 A.
- How can the output voltage be set for the TPS54120RGYR? The output voltage can be set from 0.8 V to 6.0 V using external resistors.
- What are the key features of the TPS54120RGYR? Key features include low-noise output, wide input voltage range, high efficiency, excellent load/line transient response, and synchronizability to an external clock.
- What is the operating temperature range of the TPS54120RGYR? The operating temperature range is from -40°C to 125°C.
- What package type and dimensions does the TPS54120RGYR come in? The TPS54120RGYR comes in a VQFN (RGY) package with dimensions of 3.5 mm × 5.5 mm.
- Does the TPS54120RGYR support softstart and power-good signal features? Yes, it supports softstart, switching frequency synchronization, and a power-good signal.
- What are some typical applications of the TPS54120RGYR? Typical applications include telecom infrastructure, powering sensitive clocking distribution circuits, test and measurement equipment, and powering RF components.
- Can the switching frequency of the TPS54120RGYR be synchronized to an external clock? Yes, the switching frequency can be synchronized to an external clock in the range of 200 kHz to 1.2 MHz.
- What is the noise output specification of the TPS54120RGYR? The noise output is 17 µV RMS at 100 Hz to 1 MHz.
