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/Title (Boost Converter Sync-Rect, PFM, DC-DC, True-Cutoff, Ring-Killer 600 mA)
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2019-08-15T15:32:13+08:00
BroadVision, Inc.
2020-09-29T13:02:54+02:00
2020-09-29T13:02:54+02:00
Acrobat Distiller 19.0 (Windows)
NCP1421 is a monolithic micropower high−frequency step−up
switching converter IC specially designed for battery−operated
hand−held electronic products up to 600 mA loading. It integrates
Sync−Rect to improve efficiency and to eliminate the external
Schottky Diode. High switching frequency (up to 1.2 MHz) allows
for a low profile, small−sized inductor and output capacitor to be
used. When the device is disabled, the internal conduction path from
LX or BAT to OUT is fully blocked and the OUT pin is isolated from
the battery. This True−Cutoff function reduces the shutdown current
to typically only 50 nA. Ring−Killer is also integrated to eliminate
the high−frequency ringing in discontinuous conduction mode. In
addition to the above, Low−Battery Detector, Logic−Controlled
Shutdown, Cycle−by−Cycle Current Limit and Thermal Shutdown
provide value−added features for various battery−operated
applications. With all these functions on, the quiescent supply
current is typically only 8.5 A. This device is available in the
compact and low profile Micro8 package.
application/pdf
Boost Converter Sync-Rect, PFM, DC-DC, True-Cutoff, Ring-Killer 600 mA
ON Semiconductor
NCP1421 is a monolithic micropower high−frequency step−up
switching converter IC specially designed for battery−operated
hand−held electronic products up to 600 mA loading. It integrates
Sync−Rect to improve efficiency and to eliminate the external
Schottky Diode. High switching frequency (up to 1.2 MHz) allows
for a low profile
small−sized inductor and output capacitor to be
used. When the device is disabled
the internal conduction path from
LX or BAT to OUT is fully blocked and the OUT pin is isolated from
the battery. This True−Cutoff function reduces the shutdown current
to typically only 50 nA. Ring−Killer is also integrated to eliminate
the high−frequency ringing in discontinuous conduction mode. In
addition to the above
Low−Battery Detector
Logic−Controlled
Shutdown
Cycle−by−Cycle Current Limit and Thermal Shutdown
provide value−added features for various battery−operated
applications. With all these functions on
the quiescent supply
current is typically only 8.5
A. This device is available in the
compact and low profile Micro8
package.
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