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L5953 Datasheet(PDF) 20 Page - STMicroelectronics

Part # L5953
Description  Multiple switching voltage regulator
PDF  31 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L5953 Datasheet(HTML) 20 Page - STMicroelectronics

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SPI interface
L5953
20/31
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Table 11.
Diagnostic register
d7
d6
d5
d4
d3
d2
d1
d0
Test mode
HSD1W1
HSD1W2
HSD1W3
HSD2W1
HSD2W2
HSD2W3
THW
Table 12.
Diagnostic register description
01
d7
Test mode
The diagnostic register
is referred to a test
performed during the
normal working of the
L5953
The diagnostic register
is referred to a test
performed in Test mode
d6
HSD1W1
If d7=0: HSD1 in
normal condition;
If d7=1: bit value
meaningless
If d7=0: HSD1 is in
overcurrent
If d7=1: bit value
meaningless
d5
HSD1W2
If d7=0: bit value
meaningless;
If d7=1: HSD1 in
normal condition
If d7=0: bit value
meaningless
If d7=1: an open load is
present on HSD1
d4
HSD1W3
If d7=0: bit value
meaningless;
If d7=1: HSD1 in
normal condition
If d7=0: bit value
meaningless
If d7=1: HSD1 is
shorted to the supply
voltage VDD
d3
HSD2W1
If d7=0: HSD1 in
normal condition;
If d7=1: bit value
meaningless
If d7=0: HSD2 is in
overcurrent;
If d7=1: bit value
meaningless
d2
HSD2W2
If d7=0: bit value
meaningless
If d7=1: HSD2 in
normal condition
If d7=0: bit value
meaningless
If d7=1: an open load is
present on HSD2
d1
HSD1W3
If d7=0: bit value
meaningless
If d7=1: HSD2 in
normal condition;
If d7=0: bit value
meaningless
If d7=1: HSD1 is
shorted to the supply
voltage VDD
d0
Thermal warning
Normal condition
Over temperature
protection
activated(Tj>150°C)



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