Overview
The TPS78228DDCR, part of the TPS782 family, is a low-dropout regulator (LDO) designed by Texas Instruments for battery-powered applications where ultra-low quiescent current is crucial. This device is optimized for minimal power consumption and is compatible with the TI MSP430 and other similar microcontrollers. The TPS78228DDCR features a CMOS logic level-compatible enable pin, making it versatile for various applications. Its miniaturized packaging and low output capacitor requirements make it ideal for space-constrained designs.
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 |
| Junction Temperature Range | -40 | - | 125 | °C |
| Quiescent Current (IQ) | - | 500 nA | - | - |
| Output Voltage Accuracy | -3% | ±2% | +3% | - |
| Line Regulation | - | ±1% | - | - |
| Thermal Shutdown Temperature | - | - | 160 | °C |
| Package Type | - | SOT-23-5 (DDC) | - | - |
Key Features
- Ultra-low quiescent current of 500 nA, ideal for battery-powered applications.
- High accuracy over load, line, and temperature with ±2% DC output accuracy.
- Stable operation with a 1.0-μF ceramic capacitor.
- Thermal shutdown and overcurrent protection for fault condition protection.
- CMOS logic level-compatible enable pin.
- Miniaturized packaging options including SOT-23-5 (DDC) and 2-mm x 2-mm SON-6 (DRV).
- Operating temperature range from -40°C to 125°C.
Applications
- Texas Instruments MSP430 microcontroller applications.
- Wireless handsets and smartphones.
- MP3 players.
- Battery-operated handheld products.
Q & A
- What is the typical quiescent current of the TPS78228DDCR?
The typical quiescent current is 500 nA.
- What is the maximum output current of the TPS78228DDCR?
The maximum output current is 150 mA.
- What is the operating temperature range of the TPS78228DDCR?
The operating temperature range is from -40°C to 125°C.
- What type of capacitor is recommended for stable operation?
A 1.0-μF ceramic capacitor is recommended for stable operation.
- Does the TPS78228DDCR have thermal protection?
- What are the package options available for the TPS78228DDCR?
The device is available in SOT-23-5 (DDC) and 2-mm x 2-mm SON-6 (DRV) packages.
- Is the enable pin compatible with CMOS logic?
- What is the input voltage range for the TPS78228DDCR?
The input voltage range is from 2.2 V to 5.5 V.
- What is the output voltage accuracy of the TPS78228DDCR?
The output voltage accuracy is ±2% over load, line, and temperature.
- Can the TPS78228DDCR be used in safety-critical applications?
No, it is not recommended for use in safety-critical applications without proper evaluation and validation.
