Overview
The LMR14030SDDAR is a 40 V, 3.5 A step-down regulator produced by Texas Instruments. This device is part of the SIMPLE SWITCHER® family and is designed for a wide range of applications, including industrial and automotive systems. It features a high-side MOSFET integrated into the regulator, allowing for efficient power conditioning from unregulated sources. The regulator has a wide input voltage range of 4 V to 40 V and can output voltages from 0.8 V to 28 V. Its ultra-low quiescent current of 40 µA in sleep mode and 1 µA in shutdown mode makes it suitable for battery-powered systems, enhancing battery life. The device also includes internal loop compensation, which simplifies the design process and minimizes the need for external components.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LMR14030SDDAR |
| Input Voltage Range | 4 V to 40 V |
| Output Voltage Range | 0.8 V to 28 V |
| Output Current | 3.5 A |
| Package Type | HSOIC-8 with PowerPAD™ |
| Operating Temperature Range | -40°C to 150°C |
| Switching Frequency Range | 200 kHz to 2.5 MHz |
| Quiescent Current | 40 µA (sleep mode), 1 µA (shutdown mode) |
| High-Side MOSFET Resistance | 90 mΩ |
| Minimum Switch-On Time | 75 ns |
Key Features
- Wide input voltage range from 4 V to 40 V
- Output voltage adjustable from 0.8 V to 28 V
- 3.5 A continuous output current
- Ultra-low 40 µA operating quiescent current and 1 µA shutdown current
- 90 mΩ high-side MOSFET
- Adjustable switching frequency from 200 kHz to 2.5 MHz
- Frequency synchronization to external clock
- Internal loop compensation for ease of use
- High duty cycle operation supported
- Precision enable input
- External soft-start capability
- Thermal, overvoltage, and short-circuit protection
Applications
The LMR14030SDDAR is suitable for various applications, including:
- Industrial power systems: For efficient power conditioning from unregulated sources.
- Automotive systems: Due to its wide operating temperature range and robust protection features.
- Battery-powered systems: The ultra-low quiescent current helps in prolonging battery life.
- General DC-DC conversion: Where adjustable output voltage and high efficiency are required.
Q & A
- What is the input voltage range of the LMR14030SDDAR?
The input voltage range is from 4 V to 40 V. - What is the maximum output current of the LMR14030SDDAR?
The maximum output current is 3.5 A. - What is the quiescent current of the LMR14030SDDAR in sleep mode?
The quiescent current in sleep mode is 40 µA. - Can the switching frequency of the LMR14030SDDAR be adjusted?
Yes, the switching frequency can be adjusted from 200 kHz to 2.5 MHz. - Does the LMR14030SDDAR have built-in protection features?
Yes, it includes thermal, overvoltage, and short-circuit protection. - What is the package type of the LMR14030SDDAR?
The package type is HSOIC-8 with PowerPAD™. - What is the operating temperature range of the LMR14030SDDAR?
The operating temperature range is -40°C to 150°C. - Is the LMR14030SDDAR suitable for automotive applications?
Yes, it is suitable for automotive applications due to its robust features and wide operating temperature range. - Does the LMR14030SDDAR support high duty cycle operation?
Yes, it supports high duty cycle operation. - Can the LMR14030SDDAR be synchronized with an external clock?
Yes, it can be synchronized with an external clock.
