L6984
Features
- 400 m A DC output current
- 4.5 V to 36 V operating input voltage
- Synchronous rectification
- Low consumption mode or low noise mode
- 75 µA IQ at light load (LCM VOUT = 3.3 V)
- 13 µA IQ-SHTDWN
- Adjustable f SW (250 k Hz
- 600 k Hz)
- Output voltage adjustable from 0.9 V
- No resistor divider required for 3.3 V VOUT
- VBIAS maximizes efficiency at light load
- 350 m A valley current limit
- Constant on-time control scheme
- PGOOD open collector
- Thermal shutdown
Description
The L6984 is a step-down monolithic switching regulator able to deliver up to 400 m A DC. The output voltage adjustability ranges from 0.9 V. The fixed 3.3 V VOUT requires no external resistor divider. The “Low Consumption Mode” (LCM) is designed for applications active during car parking, so it maximizes the efficiency at light load with controlled output voltage ripple. The “Low Noise Mode” (LNM) makes the switching frequency almost constant over the load current range, serving low noise application...
