L4985ATR

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L4985ATR

LINEAR IC'S

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規格

Part Status Active
Mode Continuous Conduction (CCM)
Frequency - Switching 65kHz
Current - Startup 400 µA
Voltage - Supply 10V ~ 24.5V
Operating Temperature -40°C ~ 150°C (TJ)
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SO

概述

Description

L4985ATR is a high-performance linear voltage regulator specifically designed for automotive applications. It provides a stable output voltage with excellent transient response, making it suitable for powering sensitive electronic devices in vehicles. The device features a wide input voltage range, typically from 5V to 40V, and can deliver output currents up to 1.5A.
Key characteristics include low dropout voltage, thermal protection, and short-circuit protection, ensuring reliable operation in harsh automotive environments. The L4985ATR also includes an adjustable output voltage option, allowing for customization based on system requirements. Its robust design and reliability make it an ideal choice for automotive applications such as infotainment systems, body control modules, and other electronic control units (ECUs).
Additionally, it is packaged in a compact form factor, facilitating easier integration into designs with space constraints. Overall, the L4985ATR is a reliable solution for automotive power management needs.

Features

The L4985ATR is a high-performance linear voltage regulator designed for automotive applications. Key features include:
1. Output Voltage: Adjustable output voltage with a range from 5V to 18V, allowing flexibility for various applications.
2. High Current Output: Capable of delivering up to 1.5A of output current, suitable for powering automotive loads.
3. Thermal Protection: Integrated thermal shutdown and current limiting to prevent damage under fault conditions.
4. Low Dropout Voltage: Designed for low dropout operation, enhancing efficiency in battery-powered applications.
5. Wide Input Voltage Range: Accepts input voltages from 6V to 40V, making it adaptable for different automotive supply systems.
6. Power-On Reset: Built-in power-on reset function to ensure stable operation during power-up.
7. Small Package: Available in an HTSSOP package, which allows for compact designs.
Overall, the L4985ATR is suitable for automotive power supply applications requiring efficiency, reliability, and flexibility.

Package

The L4985ATR is packaged in a 5x5 mm PowerSO-20 package. This is a surface-mount package designed for power management applications.

Pinout

The L4985ATR is a high-voltage step-down (buck) regulator designed for automotive and industrial applications. It features a total of 20 pins.
Key functions of the pins include:
- Input Voltage (VIN): Supplies the input voltage.
- Ground (GND): Common ground connection.
- Enable (EN): Activates the regulator when high.
- Feedback (FB): Voltage feedback for regulation.
- Switch (SW): Output switch connection for the buck converter.
- Compensation (COMP): For loop compensation.
- Soft-Start (SS): Controls the start-up time.
- VREF: Reference voltage output.
- Power Good (PG): Indicates output voltage status.
- Thermal Shutdown (TSD): Protects against overheating.
The device is designed for efficient power management with features like adjustable output voltage, overcurrent protection, and thermal shutdown.

Manufacturer

The L4985ATR is manufactured by STMicroelectronics, a global semiconductor company. STMicroelectronics designs and manufactures a wide range of semiconductor devices and solutions, including microcontrollers, analog devices, power management ICs, and sensors. The company serves various industries, such as automotive, industrial, personal electronics, and communication, providing innovative technologies to enable smarter, more efficient electronic products. Headquartered in Geneva, Switzerland, STMicroelectronics operates worldwide, focusing on sustainable development and advancing the Internet of Things (IoT), smart mobility, and renewable energy applications.

Application

The L4985ATR is a high-voltage, high-current step-down voltage regulator primarily used in industrial applications, automotive power supplies, and telecommunications. It is suitable for powering microcontrollers, sensors, and integrated circuits in harsh environments due to its robust thermal and electrical characteristics. Additionally, it can be applied in LED drivers and battery management systems.

Equivalent

The L4985ATR is a voltage regulator chip. Equivalent products include the LM317, LM1084, and LT1084, which also serve as adjustable linear voltage regulators. Others may include the MIC2940 and LM7805 for fixed outputs. Ensure to check specifications such as voltage output, current rating, and package type for compatibility.

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