Overview
The L4971D013TR, produced by STMicroelectronics, is a step-down monolithic power switching regulator. This device is capable of delivering up to 1.5A of current and operates with an input voltage range of 8V to 55V. It features an adjustable output voltage from 3.3V to 50V, making it versatile for various power supply applications. The L4971D013TR is available in the SO16W package and is suitable for both standard and surface-mount assembly.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Input Voltage | 8 to 55 | V |
| Output Current | Up to 1.5A | A |
| Output Voltage Range | 3.3V to 50V | V |
| Switching Frequency | Up to 300kHz | kHz |
| Internal Reference Voltage | 3.3V ±1% | V |
| Quiescent Current | 4 to 6 mA | mA |
| Thermal Shutdown | -40 to 150 °C | °C |
| Package Type | SO16W | - |
Key Features
- Up to 1.5A step-down converter
- Precise 3.3V internal reference voltage
- Output voltage adjustable from 3.3V to 50V
- Switching frequency adjustable up to 300kHz
- Voltage feedforward and zero load current operation
- Internal current limiting (pulse-by-pulse and hiccup mode)
- Inhibit for zero current consumption
- Protection against feedback disconnection
- Thermal shutdown and soft start function
Applications
The L4971D013TR is suitable for a wide range of applications requiring efficient and adjustable power supply solutions, including:
- Industrial power supplies
- Consumer electronics
- Automotive systems
- Telecommunications equipment
- Medical devices
Q & A
- What is the maximum output current of the L4971D013TR?
The maximum output current is up to 1.5A.
- What is the input voltage range for the L4971D013TR?
The input voltage range is from 8V to 55V.
- How can the output voltage be adjusted?
The output voltage can be adjusted from 3.3V to 50V using an external resistive divider.
- What is the switching frequency range of the L4971D013TR?
The switching frequency can be adjusted up to 300kHz.
- Does the L4971D013TR have thermal shutdown protection?
Yes, it has thermal shutdown protection.
- What is the quiescent current of the L4971D013TR?
The quiescent current is between 4 to 6 mA.
- What package types are available for the L4971D013TR?
The L4971D013TR is available in the SO16W package.
- Does the L4971D013TR have internal current limiting?
Yes, it has internal current limiting in both pulse-by-pulse and hiccup modes.
- How does the inhibit function work on the L4971D013TR?
The inhibit function disables the device when the SS_INH pin is grounded, allowing for zero current consumption.
- What is the purpose of the soft start function in the L4971D013TR?
The soft start function helps in reducing the inrush current during startup by gradually increasing the output voltage.
