Datasheet > 电源电路 > 开关式稳压器或控制器> BD6072HFN-TR

BD6072HFN-TR

更新时间： 2024-02-16 07:39:58

品牌	Logo	应用领域
罗姆 - ROHM		显示驱动器转换器驱动程序和接口接口集成电路脉冲光电二极管
页数	文件大小	规格书
17页	545K
描述
Boost DC/DC converter, Adjustment of brightness by external PWM pulse

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技术参数
数据手册

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BD6072HFN-TR 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	HVSSOF,	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
Factory Lead Time：	10 weeks	风险等级：	1.65
接口集成电路类型：	LED DISPLAY DRIVER	JESD-30 代码：	R-PDSO-F8
长度：	2.9 mm	复用显示功能：	NO
功能数量：	1	区段数：	4
端子数量：	8	最高工作温度：	85 °C
最低工作温度：	-30 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	HVSSOF	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	NOT SPECIFIED
座面最大高度：	0.6 mm	最大供电电压：	5.5 V
最小供电电压：	2.7 V	标称供电电压：	3.6 V
表面贴装：	YES	温度等级：	OTHER
端子形式：	FLAT	端子节距：	0.65 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	2.8 mm	Base Number Matches：	1

BD6072HFN-TR 数据手册

Daattaasshheeeett

BD6067GU

▪ Control by DC Voltage

BD6067GU has a built-in function for LED current control by DC voltage and can control the current by VDAC pin

control voltage.

22μH

VIN

VIN SW

VOUT

1μF

BD6067GU

VFB

VDAC

GNDA GND

ILED

DAC

0.5

1.5

2.5

DAC [V] (VFB=200mV)

10Ω

Figure 14. DAC Constant Current Characteristics by

DAC Control

Figure 13. Brightness Control by BD6067GU DAC

●Over voltage Protection

BD6067GU has an over voltage protection feature. When a fault occurs, for example, IC is disconnected from LED, an

excessive voltage rise may cause the SW pin and VOUT pin to exceed the absolute maximum ratings respectively,

resulting in IC damage. For this reason, when VOUT is 30V or more, over voltage protection is activated to turn Q1 off so

that the SW pin and VOUT pin don’t exceed the absolute maximum ratings.

At this time, the IC state changes from active to inactive and the output voltage drops slowly. Then, when the output voltage

falls below the over voltage protection hysteresis level, the output voltage continues to rise up to 30V again.

This protection circuit is shown in Figure 15.

COUT

VOUT

OVER Detector

OVER VOLTAGE REF

Driver

Control

Figure 15. Block Diagram for Short-circuit Protection and over voltage Protection

www.rohm.com

TSZ02201-0G3G0C200080-1-2

5.OCT.2012 Rev.001

8/14

TSZ22111・15・001

1...5 6 789 10 11...17

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