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參數(shù)資料
| 型號(hào)： | BP5250-24 |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | 25 AMP MINIATURE POWER RELAY |
| 中文描述： | 直流/直流轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 5/12頁(yè) |
| 文件大?。?/td> | 118K |
| 代理商： | BP5250-24 |
BP5250 / BP5250-24
Output voltage establishment and application circuit example
Application example
Input voltage 12V
Output voltage 5V
Q1 : 2SJ529S/hitachi
SD : RB050L-40/ROHM
L1 : CDRH124-220L/Sumida
C1 : 680
μ
F/25V
(ZL seried)
/Rubycon
C2 : 680
μ
F/16V
(ZL series)
/Rubycon
C3 : 0.1
μ
F/16V/ROHM
C4 : 0.1
μ
F/25V/ROHM
R1 : 27m
/SUSUMU
R2 : 10k
/ROHM
R3 : 30k
/ROHM
Fig.9
Vout
R2
Vin
R1
L1
R3
C3
C4
Q1
SD1
C2
C1
V
CTL
1
Vi
2
SW
3
GND
4
IS
5
Vo
6
V
ADJ
7
BP5250-BP5250-24
Caution note for operation
(1) Output voltage establishment range is changed by input voltage.Please refer to the Fig.8.
(2) Layout of external parts may significantly change the output spike noise or characteristics or cause abnomal
oscillation and temperature increase. Note the following for layout.
· Provide the input smoothing electroytic capacitor close to the FET source and pin 2 of the module.
· Provide the output smoothing electrolytic capacitor close to pin 6 of the module together with the
current detection resistor
· Large current may run into the coil, current detection resistor and output through the FET source-
drain.Try to use a solid pattern as much as possible.
· FET drain, coil and flywheel diode may generate heat by power loss. Try to use a solid pattern so that the
heat may be released. Measure a rise in temperature of each element and make sure that it is not
abnormal.
· Provide the negative terminal of the I/O smoothing capacitor and anode terminal of the flywheel diode
close to GND pin 4 of the module.
· Connect the negative terminal of the I/O smoothing electrolytic capacitor and anode terminal of the
flywheel diode nearby.
(3) Output load may cause large ripple current in the I/O smoothing electrolytic capacitor. Note the allowable
ripple current of the capacitor to be used.
(4) As the output smoothing electrolytic capacitor, one with especially low impedance is recommended for
suppresing output ripple voltage. Select a capacitor suited for the use.
(5) Please be sure to use protection circuit function.(R1 should not be 0
.)
Output voltage establishment range
Output voltage establishment range is changed by input voltage.Please refer to the Fig.8.
Vi [V]
Vi
Vo characteristic
O
e
1.5V
30
25
20
15
10
5
06
8
10 12 14 16 18 20
28 30
22 24 26
24V
17V
9V
BP5250
BP5250-24
Fig.8
5/11
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| BP5255BR00SP | 制造商:POWGG 功能描述: |
| BP5275-18 | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 3Term Step Dwn DC/DC Cnvrtr Non-Iso 1.8V RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| BP5275-25 | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 3Term Step Dwn DC/DC Cnvrtr Non-Iso 2.5V RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| BP5275-33 | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 3Term Step Dwn DC/DC Cnvrtr Non-Iso 3.3V RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| BP5275-50 | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 3Term Step Dwn DC/DC Cnvrtr Non-Iso 5.0V RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
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