参数资料
| 型号： | BD8622EFV-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 3/18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
● Block diagram
SGND
RT
Technical Note
1
FB
2
PDET
3
NC
4
0.8V
Err AMP
Detect Abnormal
Voltage
and Start error
OSC
20
FC
19
SS/DELAY
18
MODE
17
SW
5
SW
6
SW
7
SW
8
NC
9
PGND
10
Shut
Down
PWM/PFM
CONTROL
Predrive
en
VIN
enable
SVIN
EN
16
NC
15
SVIN
14
VIN
13
VIN
12
VIN
11
Fig1 Block diagram
● Pin Description
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Symbol
SGND
FB
PDET
NC
SW
SW
SW
SW
NC
PGND
VIN
VIN
VIN
VIN
NC
EN
MODE
Description
Signal GND terminal
Feed back terminal
Abnormal state notification and external IC
abnormality detection terminal
Switching output terminal
Power GND terminal
Power supply input terminal
Enable input
MODE selection terminal
Explanation
Small signal system GND
Output voltage detection
Protecting BUS communication terminal
GND for power MOSFET
Power supply input. The decoupling is done to PGND
ON/OFF control for device operation
The operation mode is switched according to the input voltage
at a light load.
18 SS/DELAY Soft start adjustment capacity connection terminal
The soft start time is adjusted with the connected capacitor
19 FC
Error amplifier output
Error amplifier phase compensation point
20 RT
Frequency adjustment resistance connection terminal The switching frequency is set by the connected resistance
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? 2009 ROHM Co., Ltd. All rights reserved.
3/15
2009.05 - Rev.A
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