Overview
The KF25BD-TR is a very low dropout voltage regulator produced by STMicroelectronics. It is part of the KF series, which is known for its low noise and low power consumption, making it particularly suitable for battery-powered systems and other low-power applications. This regulator features a very low dropout voltage of 0.4 V and a low quiescent current, which helps in minimizing power loss and enhancing overall system efficiency.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 2.5 V | V |
| Dropout Voltage | 0.4 V (at IO = 500 mA) | V |
| Quiescent Current | 50 µA (OFF mode), 500 µA (ON mode) | µA |
| Output Current | Up to 500 mA | mA |
| Operating Input Voltage | Up to 20 V | V |
| Temperature Range | -40 to 125 °C | °C |
| Supply Voltage Rejection | 70 dB (typ. at 120 Hz) | dB |
| Output Noise Voltage | 50 µV (B = 10 Hz to 100 KHz) | µV |
| Package | SO-8, DPAK (TO-252) |
Key Features
- Very low dropout voltage of 0.4 V, making it suitable for low noise and low power applications.
- Very low quiescent current (typ. 50 µA in OFF mode, 500 µA in ON mode) to minimize power consumption.
- Output current up to 500 mA.
- Logic-controlled electronic shutdown for power management.
- Internal current and thermal limit for protection.
- Requires only a 2.2 µF capacitor for stability, allowing for space and cost savings.
- High supply voltage rejection (up to 70 dB at 120 Hz).
- Wide operating temperature range from -40 to 125 °C.
Applications
The KF25BD-TR is ideal for various applications requiring low noise and low power consumption, such as:
- Battery-powered systems.
- Portable electronics.
- Wireless communication devices.
- Medical devices.
- Automotive systems.
Q & A
- What is the output voltage of the KF25BD-TR?
The output voltage of the KF25BD-TR is 2.5 V. - What is the dropout voltage of the KF25BD-TR?
The dropout voltage is 0.4 V at an output current of 500 mA. - What is the quiescent current of the KF25BD-TR?
The quiescent current is typically 50 µA in OFF mode and 500 µA in ON mode. - What is the maximum output current of the KF25BD-TR?
The maximum output current is up to 500 mA. - What is the operating temperature range of the KF25BD-TR?
The operating temperature range is from -40 to 125 °C. - Does the KF25BD-TR have a shutdown feature?
Yes, it has a logic-controlled electronic shutdown feature. - What is the supply voltage rejection of the KF25BD-TR?
The supply voltage rejection is typically 70 dB at 120 Hz. - What type of packages is the KF25BD-TR available in?
The KF25BD-TR is available in SO-8 and DPAK (TO-252) packages. - What is the minimum capacitor required for stability?
The minimum capacitor required for stability is 2.2 µF. - Is the KF25BD-TR suitable for battery-powered systems?
Yes, it is particularly suitable for battery-powered systems due to its low dropout voltage and low quiescent current.
