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參數(shù)資料
| 型號： | R1250V401A |
| 廠商： | Ricoh Co., Ltd. |
| 英文描述： | Negative Output Charge Pump Regulator(100mA) |
| 中文描述： | 負(fù)輸出電荷泵穩(wěn)壓器（100mA的） |
| 文件頁數(shù)： | 2/14頁 |
| 文件大小： | 159K |
| 代理商： | R1250V401A |
Negative Output Charge
Pump Regulator (100mA)
R1250V××1A SERIES
1
OUTLINE
The R1250V
××
1A Series are Negative Output Charge Pump Regulator ICs, which can be developed as local power
suppliers 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, and an out-
put driver circuit. The R1250V
××
1A can easily supply negative voltage, or regulated setting output voltage in the
range from -2V to -4V from positive input voltage.
The chip enable function works to shut down the internal circuit and reduces supply current at the stand-by mode,
therefore the R1250V
××
1A is very suitable for the application such as portable systems that require low supply cur-
rent.
Since the package for this IC is TSSOP8 package (TSOP8 in EIAJ standard), high density mounting of the ICs on
board is possible.
FEATURES
Output Current..................... 100mA (MAX. at V
IN
=5.0V C
IN
=C
P
=C
OUT
=4.7μF Set Output Voltage=-3.0V)
Output Voltage Accuracy...... ±3.0% (V
IN
=5.0V C
IN
=C
P
=C
OUT
=4.7μF Set Output Voltage=-3.0V I
OUT
=0mA/10mA)
±9.0% (V
IN
=5.0V C
IN
=C
P
=C
OUT
=4.7μF Set Output Voltage=-3.0V I
OUT
=50mA)
Output Voltage...................... Stepwise setting with a step of 0.1V in the range from -2.0V to -4.0V is possible.
Range of Input Voltage.........
V
OUT
V to +5.5V (Set Output Voltage=-4.0V to -2.8V)
+2.7V to +5.5V (Set Output Voltage=-2.7V to -2.0V)
Oscillator Frequency............ TYP 280kHz
Chip Enable Function (Active at “L”)
Package................................. TSSOP8
APPLICATIONS
Power source for Disk Drives.
Power source for hand-held communication equipment and battery-powered equipment.
Power source for PC peripherals and ADD-ON cards.
Power source for portable audio-visual appliances such as cameras.
Local power source for small electrical appliances.
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參數(shù)描述 |
|---|---|
| R1250V401A-E2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Negative Output Charge Pump Regulator(100mA) |
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