Overview
The TPS78227DDCR is a member 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 TPS78227DDCR is compatible with the TI MSP430 and other similar microcontrollers, and it features a CMOS logic level-compatible enable pin. Its ultra-low power consumption and miniaturized packaging make it ideal for applications requiring minimal board space and low power usage.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage Range | 2.2 | 5.5 | V | |
| Output Voltage Range | 1.8 | 4.2 | V | |
| Maximum Output Current | 150 | mA | ||
| Quiescent Current (IQ) | 500 | nA | ||
| Operating Junction Temperature | -40 | 125 | °C | |
| Storage Temperature | -55 | 150 | °C | |
| Package Type | SOT-23-5 | |||
| Body Size | 2.90 mm x 1.60 mm |
Key Features
- Ultra-low quiescent current of 500 nA, making it suitable for battery-powered applications.
- High accuracy over load, line, and temperature with a DC output accuracy of ±3%.
- Stable operation with a 1.0-μF ceramic capacitor.
- Thermal shutdown and overcurrent protection to safeguard the device during fault conditions.
- CMOS logic level-compatible enable pin for easy integration with microcontrollers.
- Miniaturized packaging options including DDC (TSOT23-5) and DRV (2-mm x 2-mm SON-6) packages.
- Operating temperature range of -40°C to 125°C.
Applications
- Texas Instruments MSP430 microcontroller applications.
- Wireless handsets and smartphones.
- MP3 players and other portable audio devices.
- Battery-operated handheld products.
Q & A
- What is the typical quiescent current of the TPS78227DDCR?
The typical quiescent current is 500 nA.
- What is the maximum output current of the TPS78227DDCR?
The maximum output current is 150 mA.
- What is the operating temperature range of the TPS78227DDCR?
The operating temperature range is -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 TPS78227DDCR have thermal protection features?
- What is the package type of the TPS78227DDCR?
The package type is SOT-23-5.
- Is the enable pin compatible with CMOS logic levels?
- What are some typical applications for the TPS78227DDCR?
Typical applications include wireless handsets, smartphones, MP3 players, and battery-operated handheld products.
- How should the enable pin be connected if shutdown capability is not required?
The enable pin should be connected to the input pin (IN) if shutdown capability is not required.
- What are the recommended power supply recommendations for the TPS78227DDCR?
A low-output impedance power supply should be connected directly to the IN pin, and an input capacitor should be used if inductive impedances are unavoidable.
