Overview
The LMR33620ADDAR, manufactured by Texas Instruments, is a high-efficiency synchronous step-down DC/DC converter designed for demanding industrial applications. This model is part of the SIMPLE SWITCHER® family, offering a compact solution with superior light-load efficiency and output accuracy. It supports input voltages up to 36V and can drive load currents up to 2A. The LMR33620ADDAR is available in both 8-pin HSOIC and 12-pin VQFN packages, with the latter featuring wettable flanks for enhanced PCB assembly. Additionally, it includes features like a power-good flag and precision enable, making it a versatile choice for a wide range of applications.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Input Voltage Range | Up to 36 | V | |
| Output Current | Up to 2 | A | |
| Switching Frequency | 400kHz, 1.4MHz, 2.1MHz | Hz | |
| Package | 8-pin HSOIC, 12-pin VQFN | VQFN has wettable flanks | |
| Protection Features | Thermal shutdown, UVLO, cycle-by-cycle current limit, hiccup short-circuit protection |
Key Features
- High efficiency across a wide load range.
- Compact solution size for space-constrained applications.
- Integrated power MOSFETs simplify design and reduce component count.
- Power-good flag and precision enable for flexible system integration.
- Automatic frequency foldback at light loads to enhance efficiency.
Applications
The LMR33620ADDAR is ideally suited for a variety of industrial applications where high efficiency and compact size are critical. Typical uses include industrial automation systems, telecommunications infrastructure, and portable medical devices. Its robust design and protection features also make it suitable for automotive applications, particularly in systems requiring reliable power management under harsh conditions.
Q & A
What is the maximum input voltage for the LMR33620ADDAR?
The maximum input voltage for the LMR33620ADDAR is 36V.
What are the protection features included in the LMR33620ADDAR?
The LMR33620ADDAR includes thermal shutdown, input undervoltage lockout (UVLO), cycle-by-cycle current limit, and hiccup short-circuit protection.
What is the output current capability of the LMR33620ADDAR?
The LMR33620ADDAR can drive up to 2A of load current.
What package options are available for the LMR33620ADDAR?
The LMR33620ADDAR is available in 8-pin HSOIC and 12-pin VQFN packages.
Does the LMR33620ADDAR support automotive applications?
Yes, the LMR33620ADDAR is suitable for automotive applications, with versions that meet AEC-Q100 standards.
What is the switching frequency of the LMR33620ADDAR?
The LMR33620ADDAR operates at switching frequencies of 400kHz, 1.4MHz, and 2.1MHz.
How does the LMR33620ADDAR improve efficiency at light loads?
The LMR33620ADDAR features automatic frequency foldback at light loads to enhance efficiency.
What is the purpose of the power-good flag in the LMR33620ADDAR?
The power-good flag provides a real-time indication of the system status, simplifying system monitoring.
Can the LMR33620ADDAR be used in portable medical devices?
Yes, the LMR33620ADDAR's compact size and high efficiency make it suitable for portable medical devices.
What is the significance of the precision enable feature in the LMR33620ADDAR?
The precision enable feature allows for precise control of the device's startup and shutdown, offering flexibility in system design.
