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R1191x Series

300mA LDO REGULATOR with the Reverse Current Protection

Data Sheet / Flyer


(3.43MB)

R1191x Series are a low supply current voltage regulator with high output voltage accuracy. The maximum operating voltage is 16V. These ICs can switch to the fast mode and the low power mode by the low power / fast mode changer pin (ECO pin) without changing the output voltage value.

Each of these ICs consists of a voltage reference unit, an error amplifier, a resistor-net for voltage setting, a short current limit circuit, a thermal shutdown circuit and a chip enable circuit.

Moreover, the R1191x Series has the reverse current protection function, which protects the reverse current flow into VDD pin when the output pin voltage becomes higher than the VDD pin voltage. Thus it is suitable for the back-up circuit.

Since the packages for these ICs are SOT-89-5, SOT-23-5 and DFN1616-6, therefore high density mounting of the ICs on boards is possible.

Supply Current	Typ. 50µA (Fast Mode), Typ. 6.0µA (Low Power Mode)
Standby Mode	Typ. 0.3µA
Reverse Current	Max. 0.1µA
Output Current	Min. 300mA
Input Voltage Range	3.5V to 16.0V
Output Voltage Range	2.0V to 15.0V (0.1V steps) (For other voltages, please refer to MARK INFORMATIONS.)
Output Voltage Accuracy	±1.5% (Fast Mode) ±2.5% (Low Power Mode)
Temperature-Drift Coefficient of Output Voltage	Typ. ±80ppm/°C
Dropout Voltage	Typ. 0.55V (Fast Mode, IOUT=300mA, VOUT=5.0V) Typ. 0.70V (Low Power Mode, IOUT=300mA, VOUT=5.0V)
Ripple Rejection	Typ. 60dB (f=1kHz,VOUT=5.0V, Fast Mode)
Line Regulation	Typ. 0.02%/V (Fast Mode)
Packages	DFN1616-6, SOT-23-5, SOT-89-5
Built-in fold-back protection circuit	Typ. 50mA (Current at short mode)
Built-in Thermal Shutdown Circuit	Shutdown Temperature at 150°C
Ceramic capacitors are recommended to be used with this IC	CIN=2.2µF or more, COUT=4.7µF or more

・Power source for digital home appliances
・Power source for audio visual equipment

Data Sheet	Flyer	Package Info.	Mark Info.	Quality Assurance Data
R1191x Series (3.43MB)	R1191x Series	DFN1616-6	R1191L	Reliability
		SOT-23-5	R1191N	Reliability
		SOT-89-5	R1191H	Reliability