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R1161x Series

Data Sheet / Flyer

3-MODE 300mA LDO REGULATOR

The R1161x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, low supply current, and low ON-resistance. 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.

These ICs perform with low dropout voltage and a chip enable function. To prevent the destruction by over current, current limit circuit is included. The R1161x Series have 3-mode. One is standby mode with CE or standby control pin. Standby mode realizes ultra small consumption current off mode. Other two modes are realized with ECO pin. Fast Transient Mode (FT mode) and Low Power Mode (LP mode) are alternative with ECO pin. Consumption current is reduced at Low Power Mode compared with Fast Transient Mode. Output voltage is maintained between FT mode and LP mode.

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.

Supply Current	Typ. 3.5µA (Low Power Mode, Vout<1.6V), Typ. 80µA (Fast Transient Mode, Vout<1.8V) Typ. 60µA (Fast Transient Mode, Vout>=1.8V)
Standby Mode	Typ. 0.1µA
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, FT Mode)
Temperature-Drift Coefficient of Output Voltage	Typ. ±100ppm/°C
Line Regulation	Typ. 0.01%/V (at Fast Transient Mode)
Output Voltage Accuracy	±2.0% (±3.0% at LP Mode)
Packages	SOT-23-5, SON-6, HSON-6
Output Voltage	0.8V to 3.3V (0.1V steps) (For other voltages, please refer to MARK INFORMATIONS.)
Input Voltage	Min. 1.40V (VOUT >= 1.0V) Min. 1.45V (VOUT<1.0V)
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)

・Precision Voltage References.
・Power source for electrical appliances such as cameras, VCRs and hand-held communication equipment.
・Power source for battery-powered equipment.

Data Sheet	Flyer	Package Info.	Mark Info.	Quality Assurance Data
R1161x Series	R1161x Series	SOT-23-5	R1161N	Reliability
		SON-6	R1161Dxx1x	Reliability
		HSON-6	R1161Dxx2x	Reliability