Overview
The TPS78218DDCR is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments. This component is designed to provide a stable and efficient power supply solution for a wide range of applications. With its compact SOT-23-5 package, the TPS78218DDCR is ideal for space-constrained designs. It offers a fixed output voltage of 1.8V, making it suitable for powering low-voltage digital circuits, microcontrollers, and sensors. The product is positioned as a high-performance, cost-effective solution for portable and battery-powered devices, as well as industrial and automotive systems. Its unique selling points include ultra-low quiescent current, high PSRR (Power Supply Rejection Ratio), and thermal shutdown protection.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Voltage | 1.8 | V | Fixed |
| Output Current | 150 | mA | Maximum |
| Dropout Voltage | 175 | mV | At 150 mA |
| Quiescent Current | 0.5 | µA | Typical |
| PSRR | 65 | dB | At 1 kHz |
| Operating Temperature Range | -40 to 125 | °C | |
| Package | SOT-23-5 | ||
| Input Voltage Range | 2.0 to 5.5 | V | |
| Thermal Shutdown | Yes | Built-in | |
| Line Regulation | 0.2 | %/V | Typical |
Key Features
- Ultra-low quiescent current for extended battery life in portable devices.
- High PSRR ensures stable operation in noisy environments.
- Thermal shutdown protection prevents damage from overheating.
- Compact SOT-23-5 package for space-constrained designs.
- Wide input voltage range supports various power sources.
Applications
The TPS78218DDCR is widely used in applications requiring a stable and efficient power supply. Its typical applications include:
- Portable Devices: Smartphones, wearables, and handheld instruments benefit from its low power consumption.
- Industrial Systems: Sensors, actuators, and control systems rely on its stability and reliability.
- Automotive Electronics: Infotainment systems, sensors, and lighting modules leverage its robust performance.
- IoT Devices: Low-power IoT nodes and wireless modules use it for efficient power management.
Q & A
1. What is the output voltage of the TPS78218DDCR?
The TPS78218DDCR provides a fixed output voltage of 1.8V.
2. What is the maximum output current it can handle?
It can deliver a maximum output current of 150 mA.
3. What is the dropout voltage at 150 mA?
The dropout voltage is 175 mV at 150 mA.
4. How low is the quiescent current?
The quiescent current is typically 0.5 µA.
5. What is the PSRR of this LDO?
The PSRR is 65 dB at 1 kHz.
6. What is the operating temperature range?
It operates within a temperature range of -40°C to 125°C.
7. What package does the TPS78218DDCR come in?
It is available in a compact SOT-23-5 package.
8. Does it have thermal shutdown protection?
Yes, it includes built-in thermal shutdown protection.
9. What is the input voltage range?
The input voltage range is 2.0V to 5.5V.
10. Is it suitable for battery-powered devices?
Yes, its ultra-low quiescent current makes it ideal for battery-powered applications.
