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参数资料
| 型号： | BD8112EFV-ME2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 10/25页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER 24-VSSOP |
| 应用说明： | Automotive Applications |
| 标准包装： | 1 |
| 恒定电流： | 是 |
| 拓扑： | 高端，低端，PWM，降压（降压），升压（升压） |
| 输出数： | 2 |
| 内部驱动器： | 两者兼有 |
| 类型 - 主要： | 车载，背光 |
| 类型 - 次要： | 高亮度 LED（HBLED），白色 LED |
| 频率： | 250kHz ~ 600kHz |
| 电源电压： | 5 V ~ 30 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VSSOP（0.220"，5.60mm 宽）裸露焊盘 |
| 供应商设备封装： | 24-HTSSOP |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 105°C |
| 其它名称： | BD8112EFV-ME2DKR |
BD8112EFV-M
Technical Note
? LED Short Detection
When the LED-pin voltage ? 4.5V (TYP) as well as OVP-pin voltage ? 1.6V (TYP) simultaneously the internal counter
starts operating, and approximately after 100ms (when FOSC = 300 kHz) the only detected channel (as LED short)
latches off. With the PWM brightness control, the detecting operation is processed only when PWM-pin = High. If the
condition of the detection operation is released before 100ms (when FOSC = 300 kHz), then the internal counter resets.
* The counter frequency is the DCDC switching frequency determined by the RT. The latch proceeds at the count of 32770.
Detecting Condition
Protection
[Detect]
[Release]
Operation after detect
UVLO
TSD
OVP
OCP
SCP
LED open
LED short
VREG<4.3V
Tj>175 ℃
VOVP>2.0V
VCS ≦ VCC-0.6V
VLED<0.3V
(100ms delay when FOSC=300kHz)
VLED<0.3V & VOVP>1.7V
VLED>4.5V & VOVP<1.6V
(100ms delay when FOSC=300kHz)
VREG>4.45V
Tj<150 ℃
VOVP<1.45V
VCS>VCC-0.6V
EN or UVLO
EN or UVLO
EN or UVLO
All blocks (but except REG)
shut down
All blocks (but except REG)
shut down
SS discharged
SS discharged
Counter starts and then latches off all
blocks (but except REG)
The only detected channel latches off
The only detected channel latches off
(after the counter sets)
www.rohm.com
? 2010 ROHM Co., Ltd. All rights reserved.
10/22
2011.08 - Rev.C
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