STMicroelectronics – Need a high-efficiency, low-noise, buck switching converter?
Use the STEVAL-ISA159V1 evaluation board to explore the L6984, a high-efficiency monolithic synchronous step-down regulator, able to deliver up to 400 mA with an input voltage from 4.5 to 36 V. The L6984 has a low- consumption mode (LCM) that boosts efficiency at light loads and a low-noise mode (LNM) for noise-sensitive applications like powering sensors in factory automation. The bill of materials and the board’s layout are optimized for efficient integration into your design and a considerably reduced time to market: a bonus for appliances or audio systems in both car and home applications.
Key Features
- 400 mA DC output current
- 4.5 V to 36 V operating input voltage
- Synchronous rectification
- Low consumption mode or low noise mode
- 100 µA IQ at light load (LCM VOUT = 3.3 V)
- 13 µA IQ-SHTDWN
- Adjustable fSW (250 kHz – 600 kHz)
- Output voltage adjustable from 0.9 V
- No resistor divider required for 3.3 V VOUT
- VBIAS maximizes efficiency at light load
- 350 mA valley current limit
- Constant on-time control scheme
- PGOOD open collector
- Thermal shutdown
- RoHS compliant
