Overview
The TPS78228DDCT is a part of the TPS782 family of low-dropout regulators (LDOs) designed by Texas Instruments. This device is specifically tailored for battery-powered applications where ultra-low quiescent current is crucial. The TPS78228DDCT offers ultra-low power consumption and miniaturized packaging, making it ideal for microprocessors, microcontrollers, and other battery-powered devices. It is compatible with the TI MSP430 and other similar products, and its enable pin is compatible with standard CMOS logic.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage Range | 2.2 | 5.5 | V | |
| Output Voltage Range | 1.8 | 4.2 | V | |
| Output Current | 0 | 150 | mA | |
| Operating Junction Temperature | -40 | 125 | °C | |
| Quiescent Current (IQ) | 500 nA | |||
| Low-Dropout Voltage at 25°C | 130 mV at 150 mA | |||
| Low-Dropout Voltage at 85°C | 175 mV at 150 mA | |||
| Output Voltage Accuracy | -3% | ±2% | +3% | |
| Package Type | SOT-23-THN (DDC), 5 pins |
Key Features
- Ultra-low quiescent current (IQ) of 500 nA
- 150-mA low-dropout regulator
- Low-dropout voltage: 130 mV at 25°C and 175 mV at 85°C at 150 mA
- 3% accuracy over load, line, and temperature
- Stable with a 1.0-µF ceramic capacitor
- Thermal shutdown and overcurrent protection
- CMOS logic level-compatible enable pin
- Miniaturized packaging options: DDC (TSOT23-5) or DRV (2-mm x 2-mm SON-6)
Applications
- Texas Instruments MSP430 and similar microcontrollers
- Wireless handsets and smartphones
- MP3 players
- Battery-operated handheld products
- Other battery-powered applications requiring ultra-low power consumption
Q & A
- What is the typical quiescent current (IQ) of the TPS78228DDCT?
The typical quiescent current is 500 nA. - What is the maximum output current of the TPS78228DDCT?
The maximum output current is 150 mA. - What is the operating temperature range of the TPS78228DDCT?
The operating temperature range is from -40°C to 125°C. - Is the TPS78228DDCT stable with any output capacitor?
No, it is stable with a ceramic capacitor greater than 1.0 µF. - Does the TPS78228DDCT have thermal protection features?
Yes, it features thermal shutdown and overcurrent protection. - What type of enable pin does the TPS78228DDCT have?
The enable pin is CMOS logic level-compatible. - What are the packaging options for the TPS78228DDCT?
The packaging options include SOT-23-THN (DDC) and 2-mm x 2-mm SON-6 (DRV). - What is the input voltage range for the TPS78228DDCT?
The input voltage range is from 2.2 V to 5.5 V. - How accurate is the output voltage of the TPS78228DDCT?
The output voltage accuracy is ±3% over load, line, and temperature. - Is the TPS78228DDCT suitable for high-performance applications requiring dual-level voltage options?
No, for such applications, consider the TPS780 series with dynamic voltage scaling.
