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R1172x Dataheets PDF



Part Number R1172x
Manufacturers RICOH
Logo RICOH
Description SUPER LOW ON RESISTANCE / LOW VOLTAGE 1A LDO
Datasheet R1172x DatasheetR1172x Datasheet (PDF)

R1172x SERIES SUPER LOW ON RESISTANCE / LOW VOLTAGE 1A LDO NO.EA-122-070627 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.

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R1172x SERIES SUPER LOW ON RESISTANCE / LOW VOLTAGE 1A LDO NO.EA-122-070627 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.............................................................. Stepwise setting with a step of 0.1V in the range of 0.8V to 5.0V (Exceptions: HSOP-6J = 0.8V to 3.5V) 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 www.DataSheet4U.com • Local Power source for Notebook PC. • L.


SN8P2501B R1172x GP1S29


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