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A5974AD Datasheet(PDF) 38 Page - STMicroelectronics

Part # A5974AD
Description  Zero load current operation
PDF  49 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

A5974AD Datasheet(HTML) 38 Page - STMicroelectronics

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Application information
A5974AD
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Doc ID 018762 Rev 1
Figure 26.
Negative buck-boost regulator
8.8
Floating boost current generator
The A5974AD does not support a nominal boost conversion as this topology requires a low
side switch, however, a floating boost can be useful in applications where the load can be
floating. A typical example is a current generator for LEDs driving, as the LED does not
require a connection to the ground.
Figure 27.
Floating boost topology
AM09654v1
Ω
A5975AD
6



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