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L9915B Datasheet(PDF) 16 Page - STMicroelectronics

Part # L9915B
Description  C-terminal alternator voltage regulator (CTAVR)
PDF  20 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9915B Datasheet(HTML) 16 Page - STMicroelectronics

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Electrical specification
L9915B
16/20
DocID027541 Rev 1
Figure 10. Retry time in case of over-current diagram
Figure 11. Retry time in case of over-current duration > TLOC diagram
Alarm detection
The device turns ON the lamp after the validation time (TLalarm) if one of the conditions in
the below table is verified.
Table 12. TLalarm validation time conditions
Detection condition
Related pin
VPH<VPHTh or PH frequency < fPLPrex
No activity on PH pin
VPH< VPprTh
F driver or its connection degraded
IF>IFOVP
F shortened to GND (Over-current on F driver)
VB>(VBISP,VBESP) and VF>VFONdet
F shortened to B
VB>VBIntOvp | VB>VBExtOvp
Battery sensor on B pin or F driver degraded
VB<VBUV
Low B Voltage (Battery under-voltage)



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