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參數(shù)資料
| 型號： | BP5220 |
| 英文描述： | Regulators LSIs |
| 中文描述： | 穩(wěn)壓器大規(guī)模集成電路 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大小： | 97K |
| 代理商： | BP5220 |
BP5220 / BP5221 / BP5222 /
BP5220X / BP5221X / BP5222X
Application example 3 : Output voltage fine adjustment
(1) When reducing the output voltage
VR value setting equations(The output voltage after adjustment is denoted Vo.)
(1) When reducing the output voltage
BP5220 / BP5221, BP5220X / BP5221X
BP5222, BP5222X
R=(Vo
1.281) / (0.1196
0.01Vo) (k
)
(2) When increasing the output voltage
BP5220 / BP5221, BP5220X / BP5221X
BP5222, BP5222X
R=1200 / (9.368Vo
112) (k
)
To make full use of the ability of the the module products, we recommended the output voltage be
adjusted within
±
20% of the output voltage rating. When the output voltage is increased by 20%, for
instance, the minimum input voltage is also increased by 20%.
(Example : When the output voltage is changed from 5V to 6V in the BP5220, the minimum input voltage
is changed from 8V to 9.6V)
R=(V
O
1.281) / (0.0278
0.00556V
O
) (k
)
R=11160 / (48.4Vo
242) (k
)
(2) When increasing the output voltage
100
μ
F
V
IN
9
7
6
5
4
3
2
1
470
μ
F
VR
BP5220X / BP5221X / BP5222X
BP5220 / BP5221 / BP5222
V
O
+
+
Fig.7
100
μ
F
V
IN
9
7
6
5
4
3
2
1
470
μ
F
VR
V
O
BP5220X / BP5221X / BP5222X
BP5220 / BP5221 / BP5222
+
+
Fig.8
9
7
6
5
4
3
2
1
100
μ
F
V
O
470
μ
F
1
C1
10
μ
F
V
IN
24V
470k
BP5220X / BP5221X / BP5222X
BP5220 / BP5221 / BP5222
2SC1740R
+
+
+
Fig.9
Application example 4 : Slow start
The slow start circuit mitigates the pulse load on the internal switching transistor when input voltage is applied,
and rises the output voltage gradually by starting the switching operation slowly.
This application is useful for preventing the malfunction of an external protection circuit due to a rush current,
and can serve as a countermeasure against the operation outside the safe operation range.
C1 is a slow-start capacitor for mitigating the over rush current that flows into the modules when the switch is
turned on.
5/8
Be sure to use
fuse for safety
Be sure to use
fuse for safety
Be sure to use
fuse for safety
相關PDF資料 |
PDF描述 |
|---|---|
| BP5221X | レギュレータLSI |
| BP5222 | Analog IC |
| BP5222X | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
| BP5220X | レギュレータLSI |
| BP5221 | Analog IC |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| BP5220A | 功能描述:開關變換器、穩(wěn)壓器與控制器 HIC REGULATOR DC-DC 5V 1.0A RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| BP5220A_10 | 制造商:ROHM 制造商全稱:Rohm 功能描述:Step-down DC/DC Converters(Non-isolated) |
| BP5220X | 制造商:ROHM 制造商全稱:Rohm 功能描述:DC / DC CONVERTER |
| BP5220XA | 功能描述:電壓監(jiān)測器/監(jiān)控器 5V1.0A RoHS:否 制造商:Texas Instruments 監(jiān)測電壓數(shù):2 監(jiān)測電壓:Adjustable 輸出類型:Open Drain 欠電壓閾值: 過電壓閾值: 準確性:1 % 工作電源電壓:1.5 V to 6.5 V 工作電源電流:1.8 uA 最大工作溫度:+ 125 C 封裝 / 箱體:SON-6 安裝風格:SMD/SMT |
| BP5221 | 制造商:ROHM 制造商全稱:Rohm 功能描述:DC / DC CONVERTER |
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