Overview
The Texas Instruments TPS71550DCKR is a low-dropout (LDO) linear voltage regulator designed for low-power applications. This regulator offers a wide input voltage range, low quiescent current, and high stability, making it ideal for battery-powered devices and low-power microcontrollers. The TPS71550DCKR is part of the TPS715 family, which is known for its miniaturized packaging and robust performance characteristics.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Manufacturer | Texas Instruments | |
| Part Number | TPS71550DCKR | |
| Package | SC-70-5 (SOT23-5) | |
| Input Voltage Range | 2.5 V to 24 V | |
| Output Voltage | Fixed: 5 V | |
| Output Current | Up to 50 mA | |
| Quiescent Current | Typically 3.2 μA at 50 mA load current | |
| Dropout Voltage | Typically 415 mV at 50 mA load current | |
| Operating Junction Temperature | -40°C to +125°C | |
| Output Voltage Accuracy | ±4% | |
| Load Regulation | 22 mV (IOUT = 100 μA to 50 mA) | |
| Line Regulation | 20 to 60 mV (VOUT(NOM) + 1 V ≤ VIN ≤ 24 V) | |
| Output Noise Voltage | 575 μVrms (BW = 200 Hz to 100 kHz, COUT = 10 μF, IOUT = 50 mA) | |
| Overcurrent Limit | 125 to 750 mA |
Key Features
- Ultra-low quiescent current of 3.2 μA at 50 mA load current, ensuring low-power operation.
- Wide input voltage range from 2.5 V to 24 V, with a maximum of 30 V for new chip versions.
- Fixed output voltage of 5 V with ±4% accuracy.
- Low dropout voltage of typically 415 mV at 50 mA load current.
- High stability with an output capacitor of ≥ 0.47 μF.
- Internal soft-start to reduce inrush current.
- Built-in overcurrent protection to safeguard against load shorts or faults.
- Miniaturized SC-70-5 (SOT23-5) package for space-saving designs.
- Operating junction temperature range of -40°C to +125°C.
Applications
- Ultralow power microcontrollers and battery-powered devices.
- Cellular and cordless handsets.
- Portable and battery-powered equipment.
- Home and building automation.
- Retail automation and payment systems.
- Grid infrastructure.
- Medical applications.
- Lighting applications.
Q & A
- What is the input voltage range of the TPS71550DCKR?
The input voltage range is from 2.5 V to 24 V, with a maximum of 30 V for new chip versions.
- What is the output voltage of the TPS71550DCKR?
The output voltage is fixed at 5 V with ±4% accuracy.
- What is the maximum output current of the TPS71550DCKR?
The maximum output current is up to 50 mA.
- What is the quiescent current of the TPS71550DCKR?
The quiescent current is typically 3.2 μA at 50 mA load current.
- What is the dropout voltage of the TPS71550DCKR?
The dropout voltage is typically 415 mV at 50 mA load current.
- What is the operating junction temperature range of the TPS71550DCKR?
The operating junction temperature range is -40°C to +125°C.
- Does the TPS71550DCKR have built-in overcurrent protection?
- What type of package does the TPS71550DCKR come in?
The TPS71550DCKR comes in a miniaturized SC-70-5 (SOT23-5) package).
- What are some common applications of the TPS71550DCKR?
- Is the TPS71550DCKR stable with an output capacitor?
