The LT3663HMS8E is a current mode step-down switching regulator with programmable output current limit. The current limit accurately controls the system power dissipation and reduces the size of the power path components.
The wide operating input voltage range of 7.5V to 36V (60V transient) suits the LT3663HMS8E to a variety of input sources, including unregulated 12V wall adapters, 24V industrial supplies, and automotive power.
The LT3663HMS8E includes a low current shutdown mode, input overvoltage and undervoltage lockout, and thermal shutdown. Internal compensation and boost diode minimize the number of external exponents. 3.3V and 5V fixed output voltage versions are available.
The LT3663HMS8E is available in 8-lead DFN and MSOP packages with exposed pads for low thermal resistance.
Feature
- Wide Input Range:
- Operation from 7.5V to 36V
- Overvoltage Lockout Protects Circuit through 60V Transients
- Programmable Output Current Limit (0.4A to 1.2A)
- 3.3V and 5V Fixed Output Voltage Options
- Integrated Boost Diode
- Fixed Frequency, Peak Current Mode Control
- LT3663 fSW = 1.5MHz
- LT3663-X fSW = 1MHZ
- Low Switch VCESAT: 275mV at 1A
- Internally Compensated
- Thermal Protection
- Thermally Enhanced 8-Pin 2mm × 3mm DFN and
Applications
- Distributed Supply Regulation
- Automotive Battery Regulation
- Industrial Supplies
- Wall Transformer Regulation
(Picture: Pinout)
