BD8381EFV-M 查看數據表（PDF） - ROHM Semiconductor

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BD8381EFV-M

LED Drivers for Automotive Light

ROHM Semiconductor 

BD8381EFV-M

Technical Note

●Application circuit 1

Vin

VREG

FAIL1

VCC

VREG

UVLO TSD

OVP

OCP

OVP

CS

EN

SYNC

RT

COMP

SS

VREG

INP1 INP2

THM

DRLIN

VREG

DISC

VTH

PWM

Timer

Latch

Control Logic

OSC

SLOPE

PWM

OCP OVP

SS

ERR AMP

-

+

+

DRV

CTL

VREG

SHORT

Det

BOOT

OUTH

SW

DGND

OUTL

GND

LEDR

LEDC

PWMOUT

FB

CR

TIMER

OPEN/ SHORT/ SCP Detect

Timer

Latch

Open Det

SCP Det

FAIL2

COUT

PGND

CT

Fig. 23

Buck application composition (It is INP1, INP2, and two input selector function. )

●Application circuit 2

Vin

VREG

FAIL1

VCC

VREG

UVLO TSD

OVP

OCP

OVP

CS

EN

SYNC

RT

COMP

VREG

SS

THM

DRLIN

VREG

DISC

VTH

PWM

Timer

Latch

Control Logic

OSC

SLOPE

PWM

OCP OVP

SS

ERR AMP

-

+

+

DRV

CTL

VREG

SHORT

Det

BOOT

OUTH

SW

DGND

OUTL

GND

LEDR

LEDC

PWMOUT

FB

CR

TIMER

OPEN/ SHORT/ SCP Detect

Timer

Latch

Open Det

SCP Det

FAIL2

COUT

PGND

CT

Fig. 24

Boost application composition (When invalidating short detection. )

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2011.04 - Rev.A

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