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LM25088

National Semiconductor
Part Number LM25088
Manufacturer National Semiconductor
Description Wide Input Range Non-Synchronous Buck Controller
Published Sep 11, 2009
Detailed Description LM25088 Wide Input Range Non-Synchronous Buck Controller www.DataSheet4U.com June 5, 2009 LM25088 Wide Input Range N...
Datasheet PDF File LM25088 PDF File

LM25088
LM25088

Overview
LM25088 Wide Input Range Non-Synchronous Buck Controller www.
DataSheet4U.
com June 5, 2009 LM25088 Wide Input Range Non-Synchronous Buck Controller General Description The LM25088 high voltage non-synchronous buck controller features all the necessary functions to implement an efficient high voltage buck converter using a minimum number of external components.
The LM25088 can be configured to operate over an ultra-wide input voltage range of 4.
5V to 42V.
This easy to use controller includes a level shifted gate driver capable of controlling an external N-channel buck switch.
The control method is based upon peak current mode control utilizing an emulated current ramp.
The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage/low output voltage applications.
The LM25088 switching frequency is programmable from 50 kHz to 1 MHz.
The LM25088 is available in two ...


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