Analog Devices / Maxim Integrated MAX15041 Step-Down DC/DC Regulators
Analog Devices MAX15041 Step-Down DC/DC Regulators are cost-effective, synchronous DC-DC converters with an internal switch that delivers an output current up to 3A. The series operates from an input voltage range of 4.5V to 28V and features a peak-current-mode PWM controller with an internally fixed 350kHz switching frequency and a 90% maximum duty cycle. This synchronous buck regulator also features internal MOSFETs that provide better efficiency than asynchronous solutions, thermal shutdown, overcurrent protection (high-side sourcing and low-side sinking), an internal 5V LDO with undervoltage lockout, and more. Analog Devices MAX15041 Step-Down DC/DC Regulators ensure safe startup when powering into a pre-biased output.
Features
- Up to 3A of continuous output current
- ±1% output accuracy over temperature
- 4.5V to 28V input voltage range
- Adjustable output voltage range from 0.606V to 0.9 x VIN
- Internal 170mΩ RDS-ON high side and 105mΩ RDS-ON low-side power switches
- Fixed 350kHz switching frequency
- Up to 93% efficiency
- Cycle-by-cycle overcurrent protection
- Programmable soft-start
- Stable with low-ESR ceramic output capacitors
- Safe startup into pre-biased output
- Enable input and power-good output
- Fully protected against overcurrent and overtemperature
- VDD LDO undervoltage lockout
- Space-saving, thermally enhanced, 3mmx3mm package (16 TQFN-EP (EP = Exposed Pad))
Applications
- Consumer Products
- Distributed Power Systems
- Preregulators
- Set-Top Boxes
- Televisions
- Wall Adapters
- XDSL Modems
Typical Operating Circuit
發佈日期: 2010-12-09
| 更新日期: 2023-04-21