Datasheet Texas Instruments LM25007MM — 数据表

LM25007
www.ti.com SNVS401C – JANUARY 2006 – REVISED FEBRUARY 2013 LM25007 42V, 0.5A Step-Down Switching Regulator
Check for Samples: LM25007 FEATURES DESCRIPTION The LM25007 is a monolithic step-down switching
regulator featuring all of the functions needed to
implement a low cost, efficient, power supply.
Capable of driving a 0.5A load over a 9V-42V input
voltage range, this device is easy to apply and is
provided in the small VSSOP-8 and the thermally
enhanced WSON-8 packages. Ultra-fast transient
response is achieved through the use of a constant
on-time architecture with Vin feed forward. This
feature provides an almost constant operating
frequency over load and input voltage variations. The
operating frequency can be adjusted with a single
resistor. This architecture is easy to use and tolerant
of component selection. An intelligent current limit is
implemented in the LM25007 with forced off time that
is inversely proportional to Vout thus ensuring
recovery from fault conditions. The output voltage
may be set from 2.5V to >30V. To improve efficiency
in light load applications, the Vcc pin can be
connected to an external voltage source to eliminate
the drop through the internal regulator. Additional …