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参数资料
| 型号： | BU30TA2WNVX-TR |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 5/30页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3V .2A 4-SSON |
| 特色产品： | CMOS LDO Regulators |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 3V |
| 输入电压： | 最高 5.5V |
| 稳压器数量： | 1 |
| 电流 - 输出： | 200mA（最小值） |
| 电流 - 限制（最小）： | 250mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 4-UDFN 裸露焊盘 |
| 供应商设备封装： | 4-SSON-EP（1.2x1.6） |
| 包装： | 标准包装 |
| 其它名称： | BU30TA2WNVX-DKR BU30TA2WNVX-DKR-ND BU30TA2WNVXDKR |
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BU ?? TA2WNVX series, BU ?? TA2WHFV series
● Input/Output terminal equivalent circuit schematic
Technical Note
V IN
1pin (VOUT)
2pin (GND)
3pin (STBY)
V IN
4pin (VIN)
VOUT
STBY
Fig. ２
Input/Output equivalent circuit
● About input/output capacitor
Capacity value of ceramic capacitor - DC bias characteristics
It is recommended to place a capacitor as close as possible to the
( Example )
pins between the input terminal and GND or between the output
terminal and GND.
The capacitor between the input terminal and GND becomes valid
when source impedance increases or when wiring is long. The
larger the capacity of the output capacitor between the output
terminal and GND is, the better the stability and characteristics in
output load fluctuation become. However, please check the status
of actual implementation. Ceramic capacitors generally have
variation, temperature characteristics, and direct current bias
characteristics and the capacity value also decreases with time
depending on the usage conditions. It is recommended to select a
ceramic capacitor upon inquiring about detailed data of the related
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
10-V withstand voltage
F characteristics
10-V withstand voltage
F characteristics
10-V withstand voltage
B1characteristics
GRM188B11A105KA61D
10-V withstand voltage
B characteristics
6.3-V withstand voltage
B characteristics
4-V withstand voltage
X6S characteristics
manufacturer.
-100
0
0.5
1
1.5
2
2.5
3
3.5
4
DC Bias Voltage [V]
Fig.3 Capacity – bias characteristics
● About the equivalent series resistance (ESR) of a ceramic capacitor
Capacitors generally have ESR (equivalent series resistance) and it
operates stably in the ESR-IOUT area shown on the right. Since
ceramic capacitors, tantalum capacitors, electrolytic capacitors, etc.
generally have different ESR, please check the ESR of the
capacitor to be used and use it within the stability area range shown
in the right graph for evaluation of the actual application.
100
10
1
0.1
0.01
Unstable area
Stability area
0
50
100
150
200
IOUT [mA]
Fig.4 Stability area characteristics (Example)
www.rohm.com
? 2011 ROHM Co., Ltd. All rights reserved.
5/29
2011.01 - Rev.C
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