Overview
The LF50ABDT-TRY, produced by STMicroelectronics, is a very low-dropout voltage regulator designed for low-noise and low-power applications. This regulator is particularly suitable for battery-powered systems and other applications where minimal power consumption is crucial. Available in DPAK and PPAK packages, it offers a range of output voltages and features a shutdown logic control function in the 5-pin configuration, allowing for part of the board to be put in standby mode to reduce total power consumption.
Key Specifications
| Parameter | Test Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Output Voltage (VO) | IO = 50 mA, VI = 7 V | 4.95 | 5 | 5.05 | V |
| Operating Input Voltage (VI) | IO = 500 mA | 16 | V | ||
| Output Current Limit (IO) | 1 | A | |||
| Line Regulation (∆VO) | VI = 6 to 16 V, IO = 5 mA | 5 | 25 | mV | |
| Load Regulation (∆VO) | VI = 6.3 V, IO = 5 to 500 mA | 5 | 25 | mV | |
| Quiescent Current (Id) | VI = 6 to 16 V, IO = 0 mA (ON mode) | 0.5 | 1 | 2 | mA |
| Quiescent Current (Id) | VI = 6 to 16 V, IO = 500 mA (OFF mode) | 50 | 100 | µA | |
| Dropout Voltage (Vd) | IO = 200 mA | 0.2 | 1.3 | V | |
| Control Input Logic Low (VIL) | Ta = -40 to 125 °C | 0.8 | V | ||
| Control Input Logic High (VIH) | Ta = -40 to 125 °C | 2 | V | ||
| Output Bypass Capacitance (CO) | ESR = 0.1 to 10 Ω, IO = 0 to 500 mA | 2 | 10 | µF |
Key Features
- Very Low Dropout Voltage: The LF50ABDT-TRY features a very low dropout voltage of 0.2 to 1.3 V, making it ideal for applications where minimal voltage loss is critical.
- Low Quiescent Current: It has a low quiescent current of 0.5 to 2 mA in ON mode and 50 to 100 µA in OFF mode, which is beneficial for power-saving designs.
- High Output Current: The regulator can supply up to 500 mA of output current.
- Shutdown Logic Control: The 5-pin configuration includes a shutdown logic control function, allowing parts of the board to be put in standby mode to reduce power consumption.
- Low Noise and High Stability: With an output noise voltage of 50 µV and high supply voltage rejection, it ensures stable and low-noise operation.
- Automotive Grade: Qualified according to the AEC-Q100 specification, it is suitable for automotive applications with an operating temperature range of -40 °C to 125 °C.
Applications
- Battery-Powered Systems: Ideal for battery-powered devices due to its low dropout voltage and low quiescent current.
- Automotive Systems: Suitable for automotive applications, including infotainment systems, sensors, and other onboard electronics.
- Low-Power Electronics: Used in various low-power electronic devices such as IoT devices, wearables, and portable electronics.
- Industrial Control Systems: Can be used in industrial control systems where low noise and high stability are required.
Q & A
- What is the maximum output current of the LF50ABDT-TRY?
The maximum output current is up to 500 mA.
- What is the typical quiescent current in ON mode?
The typical quiescent current in ON mode is 1 mA.
- What is the dropout voltage at 200 mA output current?
The dropout voltage at 200 mA output current is between 0.2 V and 1.3 V.
- What is the operating temperature range for the LF50ABDT-TRY?
The operating temperature range is -40 °C to 125 °C.
- Does the LF50ABDT-TRY have a shutdown logic control function?
- What is the recommended output bypass capacitance?
The recommended output bypass capacitance is between 2 µF and 10 µF with an ESR of 0.1 to 10 Ω.
- Is the LF50ABDT-TRY suitable for automotive applications?
- What are the typical line and load regulations?
The typical line regulation is 5 to 25 mV, and the typical load regulation is 5 to 25 mV.
- What is the output noise voltage of the LF50ABDT-TRY?
The output noise voltage is 50 µV over a bandwidth of 10 Hz to 100 kHz.
- What are the logic levels for the control input?
The control input logic low is 0.8 V, and the control input logic high is 2 V.
