参数资料
| 型号： | BD8622EFV-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 9/18页 |
| 文件大小： | 0K |
| 描述： | IC PWR SUPP 3A W/FET HTSSOP-B20 |
| 标准包装： | 2,500 |
| 应用： | 转换器，平面电视 |
| 输入电压： | 2.7 V ~ 5.5 V |
| 输出数： | 1 |
| 工作温度： | -10°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-VSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-HTSSOP-B |
| 包装： | 带卷 (TR) |
BD8622EFV
Technical Note
Light load mode operation
? Low current mode
When the terminal MODE (17 pins) is made "H", low current mode operation becomes effective. The characteristic of the
efficiency valuing is obtained in low current mode operation at a light load.
V OUT
[20mV/DIV]
SW
[2V/DIV]
I L
[200mA/DIV]
Fig.5 Low current mode operation
? Low ripple mode
When the terminal MODE is made "L", the Low ripple mode operation becomes effective. It becomes operation of valuing a
low ripple in the Low ripple mode operation at a light load.
VOUT
[20mV/DIV]
SW
[2V/DIV]
IL
[200mA/DIV]
Fig.6 Low ripplemord operation
100
90
80
70
60
50
Low current mode
40
30
20
10
0
1
Low ripple mord
10
VIN=3.3V
VO=1.8V
Io=0 ～ 100mA
SW_f=550KHz(R11=220K ? )
100
Negative overcurrent [mA]
Fig7 Light load mode efficiency comparison
www.rohm.com
? 2009 ROHM Co., Ltd. All rights reserved.
9/15
2009.05 - Rev.A
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