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L9924L Datasheet(PDF) 70 Page - STMicroelectronics

Part # L9924L
Description  Automotive vehicle conform truck car alternator regulator IC with LIN
PDF  84 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9924L Datasheet(HTML) 70 Page - STMicroelectronics

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SPI interface
L9924L
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DocID028840 Rev 3
12.4.12
External POWER MOS register [0x03]
This register is used to configure Smart Power behavior
Table 53. EXTERNAL POWER MOS register [0x03]
Bit
Register name
Reset value
Description
13-12 CP_ITAIL
0
This two bits field set the charge pump
generator tail current:
0. 128 mA
1. 77 mA
2. 96 mA
3. 45 mA
An application has to select the appropriate
current as trade-off between the needed
current and the switching noise [4.3.19]
11
CP_Enable(1)(2)
0
To ensure low current in standby coming
from µC (POFF).
10
UV_DIS
0
To disable B+ Undervoltage Detection
In some conditions the regulation strategy
(LRC, Phase regulation, etc) could lead to
an undervoltage status: in order to avoid an
immediate stand-by condition activation,
the undervoltage detection must be
disabled
9
VCLTH_SEL
0
RC Protocol V Low Level Threshold
selection
8
EXTP_LS
0
Excitation Low Side configuration selection
7-5
EXTP_TOFFCURR
0
Turn off current strength [4.3.9]:
0: 1.65 mA
1: 0 mA
2: 4.95 mA
3: 3.3 mA
4: 8.25 mA
5: 6.6 mA
6: 11.55 mA
7: 9.0 mA



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