〇Product structure : Silicon monolithic integrated circuit 〇This product has no designed protection against radioactive rays

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TSZ22111・14・001

TSZ02201-0T1T0C700180-1-2

2016.04.21 Rev.002

Constant Current LED Drivers for Automotive

Constant Current Controller

for Automotive LED Lamps

BD18340FV-M

BD18341FV-M

General Description

BD18340FV-M/BD18341FV-M are 70V-withstanding

Constant Current Controller for Automotive LED Lamps.

It is able to drive at maximum 10 rows of PNP transistors.

It can also contribute to reduction in the consumption

power of the set as it has the integrated standby function.,

The IC also incorporates a highly reliable, in-built

de-rating function, LED Open Detection, Short Circuit

Protection and Over Voltage Mute function and LED

failure input/output function.

Features





LED Constant-Current Controller



PWM Dimming Function



LED Current De-rating Function



LED Open Detection



Short Circuit Protection(SCP)



Over Voltage Mute Function(OVM)



Disable LED Open Detection Function at

Reduced-Voltage



Abnormal Output Detection and Output Functions

(Note1: Grade1)

Applications



Automotive LED Exterior Lamp

(Rear Lamp, Turn Lamp, DRL/Position Lamp,

Fog Lamp etc.)



Automotive LED Interior Lamp

(Air Conditioner Lamp, Interior Lamp,

Cluster Light etc.)

Typical Application Circuit

Key Specifications



Input Voltage Range：

4.5V to 19V



FB Terminal Voltage Accuracy：

650mV ±3%

@Ta = 25°C to 125°C



Stand-by Current：

0µA(Typ)



LED Current De-rating Accuracy：



Operating Temparature Range：

-40°C to +125°C

Package

W(Typ) x D(Typ) x H(Max)

SSOP-B16

5.00mm x 6.40mm x 1.35mm

BD18340FV-M

BD18341FV-M

OP

BASE

FB

DCDIM

CRT

D

VIN

EN

PBUS

SCP

GND

PWMOUT

VREG

NTC

OPM

PWM_in

DC_in

D1

D2

D3

DISC

SSOP-B16

Datasheet