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R1161x Series


3-MODE 300mA LDO REGULATOR




| * Outline | * Features | * Applications | * Documenets Download |



Outline


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 TM. Fast Transient Mode (FT mode) and Low Power Mode (LP mode) are alternative with. 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.
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Features


*Ultra-Low 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
*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)
*High Ripple Rejection Typ. 65dB (f=1kHz, FT Mode)
*Low Temperature-Drift Coefficient of Output Voltage Typ. ±100ppm/°C
*Excellent Line Regulation Typ. 0.01%/V (at Fast Transient Mode)
*High Output Voltage Accuracy ±2.0% (±3.0% at LP Mode)
*Small Package SOT-23-5 (Super Mini-mold), SON-6, HSON-6
*Output Voltage Stepwise setting with a step of 0.1V in the range of 0.8V to 3.3V is possible
*Input Voltage Min. 1.40V (Vout≥1.0V), 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)
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Applications

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


Data Sheet
(PDF)
Package Info.
(PDF)
Mark Info.
(PDF)
Quality Assurance Data
(PDF)
*R1161x Series
NO. EA-106-0511 (511KB)
SOT-23-5 R1161N *Reliability
SON-6 R1161Dxx1x *Reliability
HSON-6 R1161Dxx2x *Reliability

* All PDF files are less than 1MB unless otherwise stated.
* If you don't have Adobe Reader, you can download free.
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Technical Info.

* Application Note

Application Note

Technical Information on Ricoh Power Management ICs.
*

Quick Links

* Quality Assurance System
(PDF:175KB)
* Inductor Information
(PDF:70KB)


Product Catalog

Selection Guide
Selection guide is available for download in PDF format.



Discontinued Products

* Power Management ICs
* Real-time clock ICs


Lead (Pb) Free Information

All of the Lead-free products comply with RoHS Directive. RoHS Compliant


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