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參數資料
| 型號： | R1170U20B-T2 |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 固定正電壓單路輸出LDO穩壓器 |
| 英文描述： | 2 V FIXED POSITIVE LDO REGULATOR, 0.25 V DROPOUT, PDSO5 |
| 封裝： | SC-84, 5 PIN |
| 文件頁數： | 1/16頁 |
| 文件大小： | 203K |
| 代理商： | R1170U20B-T2 |
2002. Mar.7
800mA LDO REGULATOR
R1170X series
Rev. 1.11
- 1 -
s
s OUTLINE
The R1170 Series are positive voltage regulator ICs by CMOS process. The R1170 Series have features of
high ripple rejection, low dropout voltage, high output voltage accuracy, low consumption current. Each of these ICs
consists of a voltage reference unit, an error amplifier, resistor net for setting output voltage, a current limit circuit at
short mode, a chip enable circuit, and thermal-shunt circuit. Output Voltage of R1170 is fixed in the IC.
Low consumption current by the merit of CMOS process and built-in transistors with low ON-resistance make
low dropout voltage and chip enable function prolong the battery life. These regulators are remarkable improvement
on the current regulators in terms of ripple rejection, input transient response, and load transient response.
Maximum Output Current is large for its compact size.
Thus, the R1170 Series are suitable for various power sources for portable appliances.
The packages for these ICs are the SOT-89-5 package, HSON6, and SC-84 (Under Development) .
s
s FEATURES
qUltra-Low Supply Current TYP. 80A
qLow Standby Current TYP. 0.1A
qOutput Current MIN. 800mA(VIN=VOUT+1.0V)
qOutput Voltage Stepwise setting with a step of 0.1V in the range of 1.5V to 5.0V (4.1V-5.0V
output type is under development)
qHigh Output Voltage Accuracy ±2.0%
qLow Dropout Voltage TYP. 0.12V(VOUT=3.0V, IOUT=300mA)
qLine Regulation TYP. 0.05%/V
qSmall Package SOT-89-5, HSON6, SC-84 (Under Development)
qBuilt-in Current Limit Circuit
qBuilt-in Thermal Shunt Circuit
qLow Temperature-drift Coefficient of Output Voltage TYP.
±100ppm/°C
s
s APPLICATIONS
qLocal Power source for Notebook PC.
qLocal Power source for portable appliances, cameras, and videos.
qLocal Power source for equipment of battery-use.
qLocal Power source for home appliances.
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