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L9733 Datenblatt(PDF) 31 Page - STMicroelectronics

Teilenummer L9733
Bauteilbeschribung  Octal self configuring low/high side driver
PDF  34 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9733 Datenblatt(HTML) 31 Page - STMicroelectronics

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L9733
Application circuit
Doc ID 11319 Rev 11
31/34
8
Application circuit
Figure 10.
Optimized circuit layout to achieve proper EMI/ESD capability
VDD 5V
SPI
GND
All output C = 47nF ceramic
47…100nF
Ceramic
VBAT
DRNX
Module
Connector
Central ground plane (blue coloured)
47…100nF Ceramic
Voltage
Reg.
Positive ISO - pulse
protection
R1= 10...22
(EMI improvement)
Reverse polarity & neg. ISO -pulse protection
Battery
IN 6
IN 7
IN 8
VDD
RES
SCLK
DI
DO
CS
VDO
Capacitor impedance
Frequency
C1
VBAT supplies the floating charge pump. Filtering
capacitor C1 is important to achieve a proper EMI
performance. Impedance minimum should fit to
the critical frequency range. A series resistor to
VBAT can improve furthermore EMI performance.
VDD on/off for low
quiescent current



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