Datasheet > BD83740HFP-MTR

BD83740HFP-MTR

更新时间： 2022-02-26 12:59:51

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
32页	2042K
描述
1ch Source Driver for Automotive

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数据手册

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BD83740HFP-MTR 数据手册

BD83740HFP-M

Functional Description

(Unless otherwise specified, Ta=25°C, VIN=13V, IOUT=6V and RVIN_F=0.47Ω. Numbers are "Typical" values.)

1. Output Current Setting

LED Current I_OUTcan be set as below depending on values of current setting resistance RVIN_F.

(VIN VIN_F)

IOUT 



^VIN_F_REF[A]

RVIN_F

where:

VIN_F_REF is 0.18V (Typ)

IOUT

RVIN_F

VIN_F

VIN

IOUT

CIOUT

PWM_in

VREF

VIN-0.180V

(Typ)

GND

Figure 10. Output Current Setting

2. Table of Operations

PWM dimming mode switches to linear control depending on CRT terminal voltage.

When CRT terminal voltage surpasses VCRT_DIS2(4.0V(Typ)), Dimming mode turns to Linear Control,

and discharge resistance of DISC terminal changes from RD1(50Ω(Typ)) to RD2(5kΩ(Typ)).

LED open detection is activated depending on IOUT terminal voltage status, and output current is turned OFF.

Output current is also turned OFF when Low signal is input to PBUS terminal.

IOUT Terminal

Output Current

Operation Mode

Linear Control

CRT Terminal

Voltage

(VIOUT)

PBUS Terminal

Hi-Z

(I_OUT

)

4.0V(Typ)≤VCRT

50mA～500mA

See Features

Description, 3.

PWM Dimming

Operation

See Features

Description, 3

PWM Dimming

Operation

PWM dimming

Hi-Z

VIOUT ≥

VIN - 0.050V(Typ)

LED Open

1μA(Max)

Low Output

Low Input

PBUS Control OFF

www.rohm.com

TSZ02201-0T1T0C700170-1-2

06.Sep.2016 Rev.002

7/28

TSZ22111・15・001

1...4 5 678 9 10...32

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