Pin(s)
Name
Description
Application Information
16
BST
Boost input for bootstrap capacitor
An external capacitor is required between the BST and the
SW pins. A 0.022F ceramic capacitor is recommended.
The capacitor is charged from Vcc via an internal diode
during the off-time of the buck switch.
NA
EP
Exposed Pad
Exposed metal pad on the underside of the device. It is
recommended to connect this pad to the PWB ground plane,
in order to aid in heat dissipation.
www.national.com
4
LM25575Q0
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