BSP75N
Application information
The current-limit protection circuitry is designed to de-activate at low V
DS
to prevent the load
current from being unnecessarily restricted during normal operation. The design max DC
operating current is therefore determined by the thermal capability of the package/board
combination, rather than by the protection circuitry (see graph on page 7 'Typical Output
Characteristic'). This does not compromise the products ability to self protect at low V
DS
.
The overtemperature protection circuit trips at a minimum of 150°C. So the available package
dissipation reduces as the maximum required ambient temperature increases. This leads to the
following maximum recommended continuous operating currents.
Minimum copper area characteristics
For minimum copper condition as described in note (c)
Max. ambient temperature T
amb
25°C @ V
IN
= 5V
70°C @ V
IN
= 5V
85°C @ V
IN
= 5V
125°C @ V
IN
= 5V
Maximum continuous current
V
IN
= 5V
V
IN
= 10V
720
575
520
320
840
670
605
375
© Zetex Semiconductors plc 2006
ZETEX [ ZETEX SEMICONDUCTORS ]
