Overview
The LMR33620BDDAR, produced by Texas Instruments, is a SIMPLE SWITCHER® synchronous step-down DC/DC converter designed for rugged industrial applications. This regulator is part of the LMR33620 series and is known for its ease of use and high efficiency. It can drive up to 2 A of load current from an input voltage range of 3.8 V to 36 V, and it provides an output voltage range of 1 V to 24 V. The device features advanced high-speed circuitry, low EMI and switching noise, and integrated compensation networks, making it ideal for a variety of industrial and automotive applications.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 3.8 V to 36 V |
| Output Voltage Range | 1 V to 24 V |
| Output Current | Up to 2 A |
| Switching Frequency | 400 kHz, 1.4 MHz, 2.1 MHz |
| Junction Temperature Range | –40°C to +125°C |
| Minimum On-Time | 68 ns |
| Peak Efficiency | > 95% |
| Quiescent Current | 25 µA |
| Package Options | 8-pin HSOIC, 12-pin VQFN with wettable flanks |
Key Features
- Functional Safety-Capable with documentation to aid in functional safety system design
- Configured for rugged industrial applications
- Low EMI and low switching noise
- Integrated compensation network reducing the need for external components
- HotRod™ package and parallel input current paths for high power conversion
- Power-good flag and precision enable for flexible system interface
- Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection
- AEC-Q100-qualified version available
- Automatic frequency foldback at light load to improve efficiency
Applications
- Motor drive systems: drones, AC inverters, VF drives, servos
- Factory and building automation systems: PLC CPU, HVAC control, elevator control
- General purpose wide VIN power supplies
- Automotive systems requiring high reliability and efficiency
Q & A
- What is the input voltage range of the LMR33620BDDAR?
The input voltage range is 3.8 V to 36 V.
- What is the maximum output current of the LMR33620BDDAR?
The maximum output current is up to 2 A.
- What are the available switching frequencies for the LMR33620BDDAR?
The available switching frequencies are 400 kHz, 1.4 MHz, and 2.1 MHz.
- What is the junction temperature range for the LMR33620BDDAR?
The junction temperature range is –40°C to +125°C.
- Does the LMR33620BDDAR have built-in protection features?
- What package options are available for the LMR33620BDDAR?
The device is available in an 8-pin HSOIC package and a 12-pin VQFN package with wettable flanks.
- Is the LMR33620BDDAR AEC-Q100-qualified?
- How does the LMR33620BDDAR manage efficiency at light loads?
The device automatically folds back frequency at light load to improve efficiency.
- What is the quiescent current of the LMR33620BDDAR?
The quiescent current is 25 µA.
- Does the LMR33620BDDAR have a power-good flag and precision enable?
