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參數資料
| 型號： | R1250V471A-E2 |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING CONTROLLER, PDSO8 |
| 封裝： | 0.65 MM PITCH, TSSOP-8 |
| 文件頁數： | 1/13頁 |
| 文件大小： | 127K |
| 代理商： | R1250V471A-E2 |
Negative Output Charge Pump Regulator (100mA)
R1250VXX1A
2000.5.25
12345
Rev. 1.10
- 1 -
n
n OUTLINE
The R1250Vxx1A Series are Negative Output Charge Pump Regulator ICs which can be developed as a
controller of local power supply for portable appliances and small electric appliances used with batteries, with low
supply current by CMOS process.
Each of these ICs consists of an oscillator, a control circuit, a reference voltage unit, an error amplifier, an output
driver circuit. The R1250Vxx1A can be easily supply negative voltage, or regulated setting output voltage in the range
from –2V to –4V.
The chip enable function works to shut down the internal circuit and reduces supply current at the stand-by mode,
therefore the R1250Vxx1A is very suitable for the application such as portable systems that require low supply
current.
Since the package for this IC is TSSOP8 package (TSOP8 in EIAJ standard), high density mounting of the ICs on
board is possible.
n
n FEATURES
OOutput Current 100mA (MAX. at VIN=5.0V, CIN=CP=COUT=4.7mF,
Set Output Voltage=-3.0V)
OOutput Voltage Accuracy ±3.0%(VIN=5.0V, CIN=CP=COUT=4.7mF, Set Output Voltage=-3.0V, IOUT=0mA/10mA)
±9.0%(VIN=5.0V, CIN=CP=COUT=4.7
mF, Set Output Voltage=-3.0V, IOUT=50mA)
OOutput Voltage Stepwise setting with a step of 0.1V in the range from –2.0V
to –4.0V is possible.
ORange of Input Voltage VOUT to +5.5V(Set Output Voltage=-4.0V to -2.8V)
+2.7 to +5.5V(Set Output Voltage=-2.7V to –2.0V)
OOscillator Frequency TYP. 280kHz
OChip Enable Function (Active at "L")
OPackage TSSOP8
n
n APPLICATIONS
OPower source for Disk Drives.
OPower source for hand-held communication equipment and battery-powered equipment.
OPower source for PC peripherals and ADD-ON cards.
OPower source for portable audio-visual appliances such as cameras.
OLocal power source for small electrical appliances.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| R1250VXX1A | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Negative Output Charge Pump Regulator |
| R12511H01 | 制造商:PRODUCTWELL 制造商全稱:PRODUCTWELL 功能描述:ROTARY POTENTIOMETER |
| R12511V0 | 制造商:PRODUCTWELL 制造商全稱:PRODUCTWELL 功能描述:ROTARY POTENTIOMETER |
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