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L99LD21 数据表(PDF) 22 Page - STMicroelectronics

部件名 L99LD21
功能描述  High power LED driver for automotive applications
PDF  73 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L99LD21 数据表(HTML) 22 Page - STMicroelectronics

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Functional description
L99LD21
22/73
DS11130 Rev 5
4
Functional description
4.1
Operating modes
Figure 9.
Device state diagram
4.1.1
Standby mode
The pre-requisite for this mode is:
•
Device in Pre-Standby mode.
The device enters Standby mode under the following conditions:
•
By default, once the device is powered (VS present);
•
CSN High and DIN Low for more than tSTDBY
The Standby mode characteristics are:
•
V3V3 < VPOR
•
VSPI and VS low consumption
•
SPI inactive
The device leaves this mode if:
•
DIN High or CSN Low for a time t > tWAKEUP



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