Overview
The LMR33630CDDA from Texas Instruments is a SIMPLE SWITCHER® synchronous step-down DC/DC converter designed for rugged industrial applications. This device delivers best-in-class efficiency and is easy to use, making it suitable for a wide range of applications. It can drive up to 3 A of load current from an input voltage of up to 36 V and provides high light load efficiency and output accuracy in a compact solution size. The LMR33630CDDA features a power-good flag, precision enable, and integrated compensation network, which simplify the design process and enhance system flexibility.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3.8 V to 36 V | V |
| Output Voltage Range | 1 V to 24 V | V |
| Output Current | 3 A | A |
| Switching Frequency | 400 kHz, 1.4 MHz, 2.1 MHz | Hz |
| Junction Temperature Range | –40°C to +125°C | °C |
| Power MOSFET On-Resistance | 75 mΩ / 50 mΩ | mΩ |
| Minimum On-Time | 68 ns | ns |
| Peak Efficiency | > 95% | % |
| Quiescent Current | 25 µA | µA |
| Package Options | 8-pin HSOIC, 12-pin VQFN |
Key Features
- Functional Safety-Capable and configured for rugged industrial applications
- Ultra-low EMI and switching noise
- Integrated compensation network and parallel input current paths
- High power conversion efficiency at all loads with peak efficiency > 95%
- Low operating quiescent current of 25 µA
- 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
- Available in AEC-Q100-qualified version
- HotRod™ package and next-generation VQFN package with wettable flanks
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 applications
- Auxiliary power supplies for servo drives and other industrial equipment
Q & A
- What is the input voltage range of the LMR33630CDDA?
The input voltage range is from 3.8 V to 36 V.
- What is the maximum output current of the LMR33630CDDA?
The maximum output current is 3 A.
- What are the available switching frequencies for the LMR33630CDDA?
The available switching frequencies are 400 kHz, 1.4 MHz, and 2.1 MHz.
- What is the junction temperature range of the LMR33630CDDA?
The junction temperature range is from –40°C to +125°C.
- Does the LMR33630CDDA have built-in protection features?
- What packages are available for the LMR33630CDDA?
- Is the LMR33630CDDA AEC-Q100-qualified?
- What is the quiescent current of the LMR33630CDDA?
- Does the LMR33630CDDA have a power-good flag and precision enable?
- How does the LMR33630CDDA manage efficiency at light loads?
