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L9857 Datasheet(PDF) 3 Page - STMicroelectronics

Part # L9857
Description  High voltage high-side driver
PDF  11 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9857 Datasheet(HTML) 3 Page - STMicroelectronics

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L9857
Block diagram and pin description
Doc ID 12896 Rev 2
3/11
1
Block diagram and pin description
1.1
Block diagram
Figure 1.
Block diagram
1.2
Pin description
Figure 2.
Pin connection (top view)
Logic
Pulse Filter
Level Shifter
"ON"
Level Shifter
"OFF"
Undervoltage
RESET
VB to VS
Pulse Filter
FLIP FLOP
Break before
Make
Undervoltage
RESET VCC
to GND
VCC
VB
VS
HO
RES-
IN
GND
Table 2.
Pin function
Pin #
Pin name
Description
1VCC
Driver supply, typically 17V
2
IN
Driver control signal input (positive logic)
3
GND
Ground
4
RESET-
Driver enable signal input (negative logic)
5
NC
No connection (no bondwire)
6VS
MOSFET source connection
7HO
MOSFET gate connection
8VB
Driver output stage supply
VCC
IN
GND
RESET-
1
3
2
4NC
VS
HO
VB
8
7
6
5



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