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BD8381AEFV-M PDF预览

BD8381AEFV-M

更新时间: 2024-11-05 11:15:43
品牌 Logo 应用领域
罗姆 - ROHM 电池驱动控制器微控制器驱动器
页数 文件大小 规格书
39页 2635K
描述
BD8381AEFV-M是50V高耐压的白色LED驱动器。内置对应升降压电流模式的DC/DC控制器,对于电池的不稳定的电源电压变动,可实现不依赖LED段数的稳定的动作。调光可通过PWM或线性任意一种方式进行控制,还内置了PWM调光信号生成电路,无需微控制器也可实现控制。

BD8381AEFV-M 数据手册

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Datasheet  
LED Drivers for Automotive Light  
BD8381AEFV-M  
General Description  
Key Specifications  
BD8381AEFV-M is  
a
white LED driver with the  
Input Supply Voltage Range:  
5.0V to 30V  
capability of withstanding high input voltage (50V MAX).  
It has also an integrated current-mode, buck-boost  
DC/DC controller to achieve stable operation against  
high input voltage and to remove the constraint of the  
number of LEDs in series connection.  
Operating Temperature Range:  
-40°C to +125°C  
Package  
W(Typ) x D(Typ) x H(Max)  
The LED brightness is controlled by either linear or  
PWM signal and is also possible to be controlled even  
without using a microcomputer, but instead, by means  
of the built-in PWM brightness signal generation circuit.  
Features  
Integrated buck-boost current-mode DC/DC  
controller  
Built-in CR timer for PWM brightness  
PWM linear brightness  
Built-in protection functions (UVLO, OVP, TSD, OCP,  
SCP)  
HTSSOP-B28  
9.70mm x 6.40mm x 1.00mm  
LED error status detection function (OPEN/  
SHORT)  
Applications  
Headlight and Daytime Running Light etc.  
Typical Application Circuit and Block Diagram  
VREG  
FAIL1  
Vin  
OVP  
COUT  
UVLO  
TSD  
OVP  
OCP  
CS  
VCC  
EN  
VREG  
Timer  
Latch  
PWM  
BOOT  
OUTH  
SW  
Control Logic  
DRV  
CTL  
SYNC  
RT  
PWM  
SLOPE  
OSC  
DGND  
OUTL  
GND  
VREG  
ERR AMP  
-
COMP  
SS  
+
+
LEDR  
LEDC  
SHORT  
Det  
OCP OVP  
SS  
VREG  
PWMOUT  
FB  
THM  
INP1  
INP2  
DRLIN  
VREG  
OPEN/ SHORT/ SCP Detect  
CR  
TIMER  
DISC  
VTH  
Open Det  
Timer  
Latch  
FAIL2  
SCP Det  
CT  
PGND  
Product structure: Silicon monolithic integrated circuit This product has no designed protection against radioactive rays  
.www.rohm.com  
TSZ02201-0T1T0C700160-1-2  
31.Oct.2014 Rev.001  
© 2014 ROHM Co., Ltd. All rights reserved.  
1/36  
TSZ22111 14 001  

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