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参数资料
| 型号： | BD6062GU-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 11/18页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER FALSH VCSP85H2 |
| 标准包装： | 3,000 |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 闪灯/白光 |
| 频率： | 480kHz ~ 720kHz |
| 电源电压： | 2.7 V ~ 5.5 V |
| 输出电压： | 5.4V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VCSP |
| 供应商设备封装： | VCSP85H2 |
| 包装： | 带卷 (TR) |
| 工作温度： | -30°C ~ 85°C |
BD6062GU
7) Soft start
BD6062GU has soft start function.
Soft start function will prevent the big peak current from IC and coil.
The detail of soft start is as follows.
L
Technical Note
ERRAMP
A
B
R
S
Q
Q
C
SW
VOUT
OSC
PGND
EN
VOUT
A
B (dashed)
C
duty width increase little by little
Fig.32 Soft start Diagram and Timing
8) Soft Current Limiter
BD6062GU has Soft Current Limiter function.
Soft current limiter function will change the value of current gradually.
It has four steps. And the steps are as follows;
4Step of soft current limiter
Action
Time
Current Limit (DC)
Current Limit “H (peak)
Current Limit “L (peak)
Start
0~500us
0A* always
1.125A
0.675A
2nd step
500~700us
0.5A
1.75A
1.05A
3rd step
700~800us
1A
2.375A
1.425A
4th step
800~900us
1.5A
3.0A
1.8A
Normal
900us~
2A
3.625A
2.175A
Peak current of BD6062GU depends on only soft current limiter.
Switching frequency or VBAT voltage does not affect Peak current of BD6062GU.
9) Thermal shut down
BD6062GU has a thermal shut down function.
It works above 175 ℃ , and while, IC will change the status from active to inactive.
When the temperature will be under 175 ℃ , IC will return to normal operation.
www.rohm.com
? 2011 ROHM Co., Ltd. All rights reserved.
11/15
2011.05 - Rev.B
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