BP51L12 [ROHM]
DC / DC converter unit; DC / DC转换单元
| 型号： | BP51L12 |
| 厂家： | 
ROHM |
| 描述： | DC / DC converter unit |
| 文件： | 总4页 (文件大小：66K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Regulator ICs
DC / DC converter unit
BP51L05 / BP51L12
The BP51L05 and BP51L12 are DC / DC converter units that use a pulse width modulation (PWM) system. They contain
built-in control circuits, switching devices, rectifiers, and coils, and operate if only an I / O smoothing capacitor is con-
nected. With a wide range of input voltage, the ICs are best suited for obtaining a stable local power source from a main
power supply with a large voltage variation.
FApplications
Power supplies for copiers, personal computers, word processors, industrial equipment, and maintenance tools
FFeatures
1) Wide range of input voltage.
3) Heat sink unnecessary.
2) High power conversion efficiency.
4) Compact SIP 9-pin package.
FAbsolute maximum ratings
321
Regulator ICs
BP51L05 / BP51L12
FElectrical characteristics
S BP51L05 (unless otherwise noted, VI = 15V, IO = 50mA, and Ta = 25_C)
S BP51L12 (unless otherwise noted, VI = 15V, IO = 50mA, and Ta = 25_C)
FBlock diagram and measurement circuit
322
Regulator ICs
BP51L05 / BP51L12
FPin descriptions
FOperation notes
(1) Reduce output current according to an increase in
ambient temperature. Use the IC within the derating
curve range.
(3) Pins 2 to 7 are ground pins that are connected to
each other internally. Not all pins have to be used.
(4) The IC contains no circuit to protect the output cur-
rent. If short circuit is feared, use the ICP or other protec-
tion measures.
(2) Sudden power increase at the input pin (pin 9) re-
sults in increased rush current, and may cause damage
to the hybrid IC and overshooting of output voltage.
Check for this problem, which is dependent on the rise
time of input power supply and load conditions, in the ac-
tual application. As a guide, input power supply of 10ms
or greater is required against rush current, and 100ms or
greater against overshooting. Suppress the peak value
of rush current to 2A or less.
FElectrical characteristic curves
SBP51L05
323
Regulator ICs
BP51L05 / BP51L12
SBP51L12
FExternal dimensions (Units: mm)
324
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