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參數資料
| 型號： | RN5RY271A-TL |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 穩壓器 |
| 英文描述： | 0.5 A SWITCHING CONTROLLER, 180 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | MINI, PLASTIC, SOT-23, 5 PIN |
| 文件頁數： | 1/12頁 |
| 文件大小： | 434K |
| 代理商： | RN5RY271A-TL |
VFM STEP-UP DC/DC
CONVERTER CONTROLLER
RN5RYxx1 SERIES
1
OUTLINE
The RN5RYxx1 Series are CMOS-based VFM Control ICs for step-up DC/DC converter with an external dri-
ver transistor featuring high output voltage accuracy and low supply current. Each of the RN5RYxx1 Series ICs
consists of a voltage reference unit, an error amplifier, an oscillator, a VFM control circuit and feed back resistors.
A low ripple, high efficiency step -up DC/DC converter can be composed of the RN5RYxx1 Series with only an
inductor, a diode, a capacitor, and a drive transistor.
Since the package for these ICs is SOT-23-5( Mini-mold)package, high density mounting of the ICs on boards
is possible.
Low Supply Current ..................................................................................Typ. 3A
Low Standby Current ..................................................................................Typ. 0.6A
Low Temperature-Drift Coefficient of Output Voltage ...........................Typ. ±50ppm / C
High Accuracy Output Voltage ...................................................................±2.5%
Low Oscillation Start-up Voltage ...............................................................Max. 0.8V
Small Package .............................................................................................SOT-23-5(Mini-Mold)
FEATURES
APPLICATIONS
Power source for battery-powered instruments.
Power source for cameras, VCRs, camcorders, pagers, and other hand-held communication instruments.
BLOCK DIAGRAM
+
–
5
3
1
2
Vref
OSC
Output
Buffer
CE
EXT
VOUT
GND
NO. EA-030-0204
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