L99LDLH32 datasheet(16/142 Pages) STMICROELECTRONICS

부품명	L99LDLH32

상세설명	32-channel LED driver with automotive CAN FD Light interface

PDF	142 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

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16 / 142 page

Device supply concept

L99LDLH32

16/142

DS12879 Rev 6

Device supply concept

The L99LDLH32 IC is supplied through VS pin, connected to the car battery through an

external diode for reverse polarity protection or to an external pre-regulator.

The supply voltage is in the range of [VS_MIN÷40] V, avoiding any additional load dump

protection on power supply stage. On top of that, no device reset will occur in the supply

voltage range of [3÷VS_MIN] V – to keep digital content during cold cranking pulse.

In that range – [3÷VS_MIN] V - and till POR threshold (V3V3_POR_H) is not reached, full device

protection is granted and digital part (register content and state machine) is kept alive.

An under-voltage threshold (VS_UV) is implemented to avoid wrong output current due to low

battery and, till device leaves the voltage range between under-voltage VS_UV and under-

voltage reset VS_UV_RST some parameters may deviate versus specified value.

L99LDLH32 데이터시트(PDF) 16 Page - STMicroelectronics