home products Semiconductors Power DC-DC Power Conversion NB639 Wide Vin 4.5-28V, 8A, COT Synchronous Step-Down Converter, External Bias Needed
NB639 Wide Vin 4.5-28V, 8A, COT Synchronous Step-Down Converter, External Bias Needed
NB639

NB639 Wide Vin 4.5-28V, 8A, COT Synchronous Step-Down Converter, External Bias Needed

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Pricing Table

The NB639 is a fully integrated, high frequency synchronous rectified step-down switch mode converter.

Product Detail

The NB639 is a fully integrated, high frequency synchronous rectified step-down switch mode converter. It offers a very compact solution to achieve 8A continuous output current over a wide input supply range with excellent load and line regulation. The NB639 operates at high efficiency over a wide output current load range. To further optimize efficiency at light load, this device? VCC supply is designed to be biased externally. Constant-On-Time (COT) control mode provides fast transient response and eases loop stabilization. Full protection features include SCP, OCP, OVP, UVP and thermal shutdown. The NB639 requires a minimum number of readily available standard external components and is available in a space-saving 3mm x 4mm 20-pin QFN package.

Pricing Table

Technical Specification

Vin (min) (V):
4.5
Vin (max) (V):
28
Iout (max) (A):
8
Grade:
Catalog
Type:
Switching Regulators
Iq (typ) (mA):
0.04
fsw (max) (kHz):
0
Special Features:
Programmable Frequency,Soft Stop
Vfb (typ) (V):
0.815
Common Features:
External Soft Start,Light-Load Efficiency,Power Good,Synchronous Rectification
Control Mode:
COT

Additional Documentation

Manufacturer

Monolithic Power Systems (MPS)

Monolithic Power Systems, Inc. (MPS) provides small, highly energy efficient, easy-to-use power solutions for systems found in industrial applications, telecom infrastructures, cloud computing, automotive, and consumer applications.

Learn about Monolithic Power Systems (MPS)

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