NB679

Wide Vin 5.5-26V, Low Iq, High Current, Fixed 5V-8A Synchronous Buck Converter with 100mA LDO

Active

Datasheet

Description

The NB679 is a fully integrated, high-frequency, synchronous, rectified, step-down switch-mode converter with a fixed 5 V output. It offers a very compact solution to achieve 8 A continuous output current and 10 A peak output current over a wide input supply range with excellent load and line regulation.
The NB679 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.
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.
NB679 provides a fixed 5 V LDO, which can be used to power the external peripheries.
Full protection features include OC limit, OVP, UVP, and thermal shutdown.
The converter requires a minimum number of external components and is available in QFN 2mm x 3mm package.

Features & Benefits

Wide 5.5 V to 26 V Operating Input Range
Fixed 5 V Vout
Supports 5.5 V-5 V
Ultrasonic Mode with Fs over 25 kHz
100 μA Low Quiescent Current
8 A Continous Output Current
10 A Peak Output Current
Adaptive COT for Fast Transient
DC Auto-Tune Loop for Load Regulation
Stable with POSCAP and Ceramic Output Capacitors
Built-In 5 V, 100 mA LDO with Switch Over
1% Reference Voltage
Internal Soft Start
Output Discharge
700 kHZ Switching Frequency
OCP, OVP, UVP, and Thermal Shutdown.
Latch-Off Reset via EN or Power Cycle
QFN-12 (2mm x 3mm) Package

Evaluation Tools

EVNB679-D-00A Evaluation Kit 26V, LowIq, High Current, Fixed 5.5V-8A Synchronous Buck Converter With 100mA LDO

The NB679 is a fully integrated high frequency synchronous rectified step-down switch mode converter with fixed 5V Vout. It offers very compact solution to achieve 8A continuous output current and 10A peak output current over a wide input supply range with excellent load and line regulation.

The NB679 operates at high efficiency over a wide output current load rang based on MPS proprietary switching loss reduction tech and internal Low Ron Power MOSFETs

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.

NB679 also provide fixed 5V LDO which can be used to power the external peripheries.

Full protection features include OC Limit, OVP, UVP and thermal shut down. The converter requires minimum number of external components and is available in QFN 2x3 packages.

$25.00
+ tax