Monolithic Power Systems NB681
The NB681 is a fully integrated, high-frequency, synchronous, rectified, step-down, switch-mode converter with 2-bit VID, especially designed for IMVP8 applications—VCCIO, PRIMCORE, V1.0A, EDRAM, and EOPIO. It offers a very compact solution to achieve a 6A continuous output current and a 7.5A peak output current over a wide input supply range. The NB681 operates at high efficiency over a wide output current load range based on MPS proprietary switching loss reduction technology and internal low Ron power MOSFETs.| Part No. | NB681 |
|---|---|
| Datasheet | NB681 Download |
| Manufacturer |  Monolithic Power Systems |
| Description | 28V 6A High Current Synchronous Buck Converter |
| Buy | Stock & Price |
DESCRIPTION
Adaptive constant-on-time (COT) control mode provides fast transient response and eases loop stabilization. The DC auto-tune loop provides good load and line regulation. To avoid audible noise, NB681 provides lowpower mode for power loss saving during the low-power state and ultrasonic mode. Full protection features include OC limit, OVP, UVP, and thermal shutdown. The converter requires a minimal number of external components, and it is available in a QFN 2mm x 3 mm package. TYPICAL APPLICATIONFEATURES
● Wide 4.5V to 28V Operating Input Range● VCCIO/PRIMCORE/EDRAM/EOPIO/V1.0A Compatible for IMVP8
● Output Adjustable by 2-Bit VID
● Low-Power Mode
● 25µA Low Quiescent Current
● 6A Continous Output Current
● 7.5A Peak Output Current
● Selectable Ultrasonic Mode
● Adaptive COT for Fast Transient
● DC Auto-Tune Loop
● Stable with POSCAP and Ceramic Capacitors
● 1% Reference Voltage
● Internal Soft Start
● Output Discharge
● OCL, OVP, UVP, and Thermal Shutdown,
● Latch-Off Res...
