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R1131D122B Dataheets PDF



Part Number R1131D122B
Manufacturers RICOH
Logo RICOH
Description LDO REGULATOR
Datasheet R1131D122B DatasheetR1131D122B Datasheet (PDF)

R1131x SERIES Low Voltage 300mA LDO REGULATOR NO.EA-116-061102 OUTLINE The R1131x Series are CMOS-based low voltage regulator ICs with output voltage range from 0.8V to 3.3V. The minimum operating voltage is 1.4V. Each of these voltage regulator ICs consists of a voltage reference unit, an error amplifier, resistors for setting output voltage, a current limit circuit, and a chip enable circuit. www.DataSheet4U.com To prevent the destruction by over current, current limit circuit is included. St.

  R1131D122B   R1131D122B



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R1131x SERIES Low Voltage 300mA LDO REGULATOR NO.EA-116-061102 OUTLINE The R1131x Series are CMOS-based low voltage regulator ICs with output voltage range from 0.8V to 3.3V. The minimum operating voltage is 1.4V. Each of these voltage regulator ICs consists of a voltage reference unit, an error amplifier, resistors for setting output voltage, a current limit circuit, and a chip enable circuit. www.DataSheet4U.com To prevent the destruction by over current, current limit circuit is included. Standby mode realizes ultra small consumption current. The output voltage of these ICs is internally fixed with high accuracy. Since the packages for these ICs are SOT-23-5, SON-6, and HSON-6, high density mounting of the ICs on boards is possible. FEATURES • Supply Current ..................................................Typ. 80µA (VOUT < 1.8V) Typ. 60µA (VOUT > = 1.8V) • Standby Mode ...................................................Typ. 0.1µA • Low Dropout Voltage.........................................Typ. 0.48V(IOUT=300mA Output Voltage=1.0V Type) Typ. 0.31V(IOUT=300mA Output Voltage=1.5V Type) Typ. 0.23V(IOUT=300mA Output Voltage=3.0V Type) • Ripple Rejection................................................Typ. 65dB(f=1kHz) • Low Temperature-Drift Coefficient of Output Voltage Typ. ±100ppm/°C • Excellent Line Regulation .................................Typ. 0.01%/V • Output Voltage Accuracy................................... ±2.0% • Packages .........................................................SOT-23-5, SON-6, HSON-6 • Output Voltage Range.......................................0.8V to 3.3V • Input Voltage Range .........................................1.4V to 3.3V • Built-in fold-back protection circuit ....................Typ. 50mA (Current at short mode) • External Capacitors...........................................CIN=COUT=Tantalum 1.0µF (VOUT < 1.0V) CIN=COUT=Ceramic 1.0µF (VOUT > = 1.0V) APPLICATIONS • Precision Voltage References. • Power source for electrical appliances such as cameras, VCRs and hand-held communication equipment. • Power source for battery-powered equipment. 1 R1131x BLOCK DIAGRAM R1131xxxxA VDD VOUT VDD R1131xxxxB VOUT www.DataSheet4U.com Vref Current Limit Vref Current Limit GND CE GND CE R1131xxxxD VDD VOUT Vref Current Limit CE GND SELECTION GUIDE The output voltage, the chip enable polarity, package type, and the taping type for the ICs can be selected at the user's request. The selection can be available by designating the part number as shown below; R1131xxxxx-xx-x ↑ ↑ ↑↑ ↑ ↑ a b a'c d e Code a, a' ←Part Number Contents Designation of Package Type : R1131Nxx1x: SOT-23-5 (Mini-mold) R1131Dxx1x: SON-6, R1131Dxx2x: HSON-6 Setting Output Voltage (VOUT): Stepwise setting with a step of 0.1V in the range of 0.8V to 3.3V is possible. If the output=1.85V, then the code is R1131x18xx5. If the output=2.85V, then the code is R1131x28xx5. Designation of Chip Enable Option : A:“L” active type. B:“H” active type.


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