NS LM3151MHE-3.3/NOPB

降压降压6V ~ 42V

Overview

The LM3151/2/3 SIMPLE SWITCHER? Controller is an easy to use and simplified step down power controller capable of providing up to 12A of output current ina typical application. Operating with an input voltage range from 6V-42V, the LM3151/2/3 features a fixed output voltage of3.3V, and features switching frequencies of 250 kHz, 500 kHz, and 750 kHz. The synchronous architecture provides for highlyefficient designs. The LM3151/2/3 controller employs a Constant On-Time (COT) architecture with a proprietary Emulated RippleMode (ERM) control that allows for the use of low ESR output capacitors, which reduces overall solution size and output voltageripple. The Constant On-Time (COT) regulation architecture allows for fast transient response and requires no loop compensation,which reduces external component count and reduces design complexity.

The LM3151/2/3 SIMPLE SWITCHER? concept provides for an easy to use complete design using a minimum number of external components and National’s WEBENCH? online design tool. WEBENCH? provides design support for every step of the design process and includes such as external component calculationwith a new MOSFET selector, electrical simulation, thermal simulation, and Build-It boards for prototyping.

Features

SIMPLE SWITCHER® Series
Bulk Package
Transistor Driver Output Type
Positive Output Configuration
Buck Topology
1 Number of Outputs
1 Output Phases
6V ~ 42V Voltage - Supply (Vcc/Vdd)
250kHz Frequency - Switching
Yes Synchronous Rectifier
No Clock Sync
Enable, Soft Start Control Features
Surface Mount Mounting Type