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R1172D082B-TR-FE PDF预览

R1172D082B-TR-FE

更新时间: 2024-09-18 09:01:51
品牌 Logo 应用领域
理光 - RICOH 光电二极管
页数 文件大小 规格书
25页 512K
描述
Fixed Positive LDO Regulator, PDSO6, HALOGEN FREE AND ROHS COMPLIANT, HSON-6

R1172D082B-TR-FE 数据手册

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R1172x SERIES  
SUPER LOW ON RESISTANCE / LOW VOLTAGE 1A LDO  
NO.EA-122-111027  
OUTLINE  
The R1172x Series are CMOS-based positive voltage regulator ICs. The R1172x Series have features of super  
low dropout, 1A output current capability. Even the output voltage is set at 1.5V, on resistance of internal FET is  
typically 0.32Ω. Therefore, applications that require a large current at small dropout are suitable for the R1172x  
series. Low input voltage is acceptable and low output voltage can be set. The minimum input voltage is 1.4V,  
and the lowest set output voltage is 0.8V. Each of these ICs consists of a voltage reference unit, an error  
amplifier, resistor net for setting output voltage, a current limit circuit at over-current, a chip enable circuit, a  
thermal-shutdown circuit, and so on. A stand-by mode with ultra low consumption current can be realized with  
the chip enable pin. The output voltage of R1172 is fixed in the IC.  
Since the packages for these ICs are SOT-23-5, SOT-89-5, HSON-6, and HSOP-6J with high power  
dissipation, high density mounting of the ICs on boards is possible.  
FEATURES  
Output Current ............................................................ 1A  
Supply Current ............................................................. Typ. 60μA  
Standby Current .......................................................... Typ. 0.1μA  
Input Voltage Range ................................................... 1.4V to 6.0V  
Output Voltage.............................................................. 0.8V to 5.0V (0.1V steps)  
(For other voltages, please refer to MARK INFORMATIONS.)  
Dropout Voltage............................................................ Typ. 0.32V (VOUT=1.5V, IOUT=1A)  
Typ. 0.18V (VOUT=2.8V, IOUT=1A)  
Ripple Rejection........................................................... Typ. 70dB (VOUT=2.8V)  
Output Voltage Accuracy.............................................. ±2.0%  
Temperature-Drift Coefficient of Output Voltage .......... Typ. ±100ppm/°C  
Line Regulation ............................................................ Typ. 0.05%/V  
Load Regulation ......................................................... Typ. 15mV at IOUT=300mA, Typ. 50mV at IOUT=1A  
Packages .................................................................... SOT-23-5, SOT-89-5, HSON-6, HSOP-6J  
Built-in Inrush current limit circuit ............................... Typ. 500 mA  
Built-in Fold-Back Protection Circuit ........................... Typ. 250mA (Current at short mode)  
Built-in Thermal Shutdown Circuit .............................. Thermal Shutdown Temperature ; Typ. 150°C  
Released Temperature ; Typ. 120°C  
Built-in Auto Discharge Function ................................ D Version  
Output capacitors ....................................................... CIN=COUT=Tantalum 4.7μF (VOUT < 1.0V)  
>
CIN=COUT=Ceramic 4.7μF (VOUT 1.0V)  
APPLICATIONS  
Local Power source for Notebook PC.  
Local Power source for portable communication equipments, cameras, and VCRs.  
Local Power source for home appliances.  
1

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