規格
| 屬性 | 價值 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| Series | SIMPLE SWITCHER® |
| ProductStatus | Active |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 4V |
| Voltage-Input(Max) | 40V |
| Voltage-Output(Min/Fixed) | 0.8V |
| Voltage-Output(Max) | 28V |
| Current-Output | 2A |
| Frequency-Switching | 200kHz ~ 2.5MHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 8-PowerSOIC (0.154, 3.90mm Width) |
概述
Description
The LMR14020SDDAR is a buck (step-down) DC-DC converter from Texas Instruments, designed to be highly efficient for power conversion applications. This device is part of the SIMPLE SWITCHER® family and integrates all necessary components for reducing a high input voltage to a lower output voltage, suitable for a variety of applications like industrial systems, automotive applications, and battery-powered devices.
Key features of the LMR14020SDDAR include:
- Input voltage range of 4.5V to 40V.
- Output current capability of up to 2A.
- Adjustable output voltage as low as 0.765V.
- Fixed switching frequency of 2.1 MHz, enabling the use of smaller inductors and capacitors.
- High efficiency across a wide load range due to its low RDS(on) and low quiescent current.
- Protection features such as cycle-by-cycle current limiting, thermal shutdown, and an undervoltage lockout mechanism.
The device comes in a small, thermally efficient 8-pin SOIC package with a PowerPAD, which helps in heat dissipation. Its compact form factor and minimal external component requirement make it ideal for space-constrained applications.
Key features of the LMR14020SDDAR include:
- Input voltage range of 4.5V to 40V.
- Output current capability of up to 2A.
- Adjustable output voltage as low as 0.765V.
- Fixed switching frequency of 2.1 MHz, enabling the use of smaller inductors and capacitors.
- High efficiency across a wide load range due to its low RDS(on) and low quiescent current.
- Protection features such as cycle-by-cycle current limiting, thermal shutdown, and an undervoltage lockout mechanism.
The device comes in a small, thermally efficient 8-pin SOIC package with a PowerPAD, which helps in heat dissipation. Its compact form factor and minimal external component requirement make it ideal for space-constrained applications.
Equivalent
The LMR14020SDDAR is a DC-DC step-down (buck) converter. Equivalent products from other manufacturers with similar specifications may include:
1. LM2596 from Texas Instruments.
2. MP2315 from Monolithic Power Systems.
3. AP3211 from Diodes Incorporated.
4. TS3004 from Touchstone Semiconductor.
These alternatives may differ slightly in features or performance, so it's important to review their datasheets to ensure compatibility with your specific application needs.
1. LM2596 from Texas Instruments.
2. MP2315 from Monolithic Power Systems.
3. AP3211 from Diodes Incorporated.
4. TS3004 from Touchstone Semiconductor.
These alternatives may differ slightly in features or performance, so it's important to review their datasheets to ensure compatibility with your specific application needs.
Features
The LMR14020SDDAR is a buck switching voltage regulator from Texas Instruments. It features a wide input voltage range of 4.5 V to 40 V, making it suitable for various applications. The device can deliver up to 2 A of continuous output current with high efficiency. It operates at a fixed switching frequency of 700 kHz, allowing for small output inductor and capacitor sizes, which aids in compact design. The regulator offers a precise enable input and adjustable soft-start functionality to support controlled start-up operations. It also includes features like overcurrent protection, thermal shutdown, and a power good indicator. The device is available in a small, thermally-enhanced 8-pin SOIC package. These features make the LMR14020SDDAR suitable for use in industrial, automotive, and consumer electronics where space and efficiency are critical considerations.
Pinout
The LMR14020SDDAR is a step-down voltage regulator manufactured by Texas Instruments. It is typically housed in a 8-pin WSON (DSD) package. Here is a brief overview of its pin count and functions:
1. VIN (Pin 1): Input voltage pin where the input supply voltage is connected.
2. SW (Pin 2): Switch node, connected to the inductor and carries the switching current.
3. GND (Pin 3): Ground pin for the device, connected to the system ground.
4. FB (Pin 4): Feedback pin used to set the output voltage through a resistor divider network.
5. EN (Pin 5): Enable pin to turn the device on or off. A high level enables the device.
6. RT/CLK (Pin 6): Frequency setting pin to adjust the switching frequency or enable clock synchronization.
7. COMP (Pin 7): Compensation pin for stabilizing the control loop.
8. BOOT (Pin 8): Bootstrapped driver supply for the high-side FET.
These pins work together to achieve efficient step-down voltage regulation from a higher voltage input to a lower voltage output.
1. VIN (Pin 1): Input voltage pin where the input supply voltage is connected.
2. SW (Pin 2): Switch node, connected to the inductor and carries the switching current.
3. GND (Pin 3): Ground pin for the device, connected to the system ground.
4. FB (Pin 4): Feedback pin used to set the output voltage through a resistor divider network.
5. EN (Pin 5): Enable pin to turn the device on or off. A high level enables the device.
6. RT/CLK (Pin 6): Frequency setting pin to adjust the switching frequency or enable clock synchronization.
7. COMP (Pin 7): Compensation pin for stabilizing the control loop.
8. BOOT (Pin 8): Bootstrapped driver supply for the high-side FET.
These pins work together to achieve efficient step-down voltage regulation from a higher voltage input to a lower voltage output.
Manufacturer
The LMR14020SDDAR is manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company headquartered in Dallas, Texas. It is known for designing and manufacturing semiconductors and integrated circuits, which are used in a variety of electronic devices and systems. TI's products are utilized in sectors such as automotive, industrial, personal electronics, communications equipment, and enterprise systems. The company focuses on innovation and development in areas such as analog chips, embedded processors, and digital light processing (DLP) technology. As one of the largest semiconductor companies in the world, TI plays a significant role in advancing electronics and technology.
Application
The LMR14020SDDAR is a buck converter used in various applications due to its efficiency and compact size. Common application areas include:
1. Industrial Power Systems: Used for converting higher voltages to lower levels required by various industrial equipment.
2. Automotive Systems: Powers infotainment systems, sensors, and other electronic components within vehicles.
3. Telecommunications: Provides stable power supply for communication devices and networking equipment.
4. Consumer Electronics: Used in devices like TVs, gaming consoles, and home appliances for efficient power management.
5. Medical Devices: Ensures reliable power for portable and stationary medical equipment.
Its wide input voltage range and high efficiency make it versatile for many power regulation needs.
1. Industrial Power Systems: Used for converting higher voltages to lower levels required by various industrial equipment.
2. Automotive Systems: Powers infotainment systems, sensors, and other electronic components within vehicles.
3. Telecommunications: Provides stable power supply for communication devices and networking equipment.
4. Consumer Electronics: Used in devices like TVs, gaming consoles, and home appliances for efficient power management.
5. Medical Devices: Ensures reliable power for portable and stationary medical equipment.
Its wide input voltage range and high efficiency make it versatile for many power regulation needs.
Package
The LMR14020SDDAR is a switching regulator IC from Texas Instruments, and it comes in an 8-pin SOIC (Small Outline Integrated Circuit) package, specifically known as SO PowerPAD. This package type is compact and designed for effective heat dissipation with a thermal pad.
