Datasheet Texas Instruments LM25088QMHX-2/NOPB — Datenblatt

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Documents LM25088, LM25088-Q1
SNVS609J – DECEMBER 2008 – REVISED JANUARY 2015 LM25088, LM25088-Q1 Wide Input Range Non-Synchronous Buck Controller
1 Features 3 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 4.5 V to 42 V. 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. 1 LM25088Q is an Automotive Grade Product that is …