Manufacturer: Analog Devices
Key Specifications
- Package: 10-Lead DFN (3mm x 3mm)
- Output Voltage: 3.3V fixed
- Input Voltage Range: 4.2V to 40V (to be verified)
- Output Current: 350mA (to be verified)
- Quiescent Current: 2.8µA (typical, to be verified)
- Switching Frequency: 200kHz to 2MHz (programmable, to be verified)
- Operating Temperature: -40°C to +125°C (to be verified)
The LT3970IDDB-3.3#TRPBF is a compact, high voltage step-down switching regulator from Analog Devices, offering a fixed 3.3V output. It is designed for applications requiring efficient power conversion from a wide input voltage range, with low quiescent current to extend battery life in portable and industrial systems.
Key Features
- Fixed 3.3V output voltage simplifies design
- Wide input voltage range supports various supply rails (to be verified)
- Low quiescent current (typical 2.8µA) for battery-powered applications (to be verified)
- Programmable switching frequency from 200kHz to 2MHz allows optimization between efficiency and component size (to be verified)
- Internal compensation and soft-start reduce external component count
- Robust protection features including overcurrent and thermal shutdown (to be verified)
- Operating temperature range of -40°C to +125°C suitable for industrial environments (to be verified)
Applications
- Industrial sensors and transmitters
- Portable and battery-powered equipment
- Automotive power supplies (if qualified)
- Distributed power systems
Selection Guidance
When selecting the LT3970IDDB-3.3#TRPBF, verify the input voltage range and output current requirements against your system specifications. The fixed 3.3V output is ideal for logic and microcontroller supplies. For adjustable output versions, consider other LT3970 variants. Ensure the thermal performance of the DFN package is adequate for your power dissipation needs.
