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L9800 Datasheet(PDF) 31 Page - STMicroelectronics

Part # L9800
Description  Automotive 8-channel LS driver
PDF  55 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9800 Datasheet(HTML) 31 Page - STMicroelectronics

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Figure 23. PWM generator
(*) In case IN0 and IN1 are mapped to the same channel, IN0 has a higher priority with respect to IN1.
7.3.2
Automatic PWM LED generator
Device has one independent automatic PWM LED generator. This can be assigned to one or more channels, and
can be programmed with a different duty cycle and frequency. The PWM frequency is obtained by dividing the
internal clock base frequency fINT and can be set using CFG_2.PWM_DIV_LED bits and adjusted through
CFG_2.FR_ADJ bits as described in the Table 13.
Table 13. Coefficient overview
CFG_2.FR_ADJ
Absolute delta to fINT divider
00B
0%
01B
-13%
10B
+18%
11B
0%
L9800
Power stages
DS14041 - Rev 2
page 31/55



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