Datasheet > BD8388FV-M

BD8388FV-M

更新时间： 2023-09-03 20:25:07

品牌	Logo	应用领域
罗姆 - ROHM		驱动驱动器
页数	文件大小	规格书
21页	1807K
描述
BD8388FV-M是耐压高达40V的串行输入并行输出控制LED驱动器。根据三线串行数据，可打开/关闭8通道开漏输出。采用小型封装，非常有助于节省空间。

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BD8388FV-M 数据手册

BD8388FV-M

Description of Function - continued

(3) Enable Signal

By applying voltage V_THor more to the OEN_B pin, D7 to D0 become open forcibly.

All output terminals become PWM operation by having the PWM signal to the OEN_B pin at the same time.

V_TH

OEN_B

(Input)

V_TL

VBAT

V_OL

LED OFF

D7 to D0

(Output)

LED ON

I_LED

LED OFF

OFF

Figure 5. PWM Dimming Control

(4) SEROUT

A cascade connection can be made (connecting at least 2 or more IC’s in serial). Serial signal input from SERIN is

transferred into the receiver IC by the falling edge of the CLK signal. Since this functionality gives enough margins

for the setup time prior to the rising edge of the CLK signal on the receiver IC (using the exact same CLK signal of

the sender IC), the application reliability can be improved as cascade connection functionality.

LATCH

SERIN

CLK

SEROUT

Figure 6. SEROUT Output Signal

2. Cascade Connection

As an application, BD8388FV-M can turn on 9 or more LED lights. By making a cascade connection between 2 ICs, the

LED application of up to 16 lights can be constructed. In this case, connect the SEROUT pin of the sender IC and the

SERIN pin of the receiver IC. When send 16bit signal to the sender IC, the serial data is sent to the receiver IC from the

SEROUT pin of the sender IC. In addition, it is possible to construct 3 or more applications.

Receiver IC

Sender IC

LATCH

SERIN

CLK

d15 d14 d13

d10

Figure 7. Cascade Connection

www.rohm.com

TSZ02201-0T2T0B100260-1-2

01.Aug.2018 Rev.001

4/18

TSZ22111 • 15 • 001

1 2 345 6 7...21

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