R1152N Datasheet, PDF (1/21 Pages) RICOH electronics devices division – High Input Voltage Tolerant Boost Voltage Regulator

R1152N SERIES
High Input Voltage Tolerant Boost Voltage Regulator
NO.EA-108-0601
OUTLINE
The R1152N Series are CMOS-based positive voltage regulator controller ICs with high output voltage
accuracy, low supply current.
The high output current regulator can be composed with this IC, an external power transistor, and capacitors.
Each of these voltage regulator controllers consists of a voltage reference unit, an error amplifier, comparators,
resistors for output voltage setting, a peak current limit protection circuit, a short current limit circuit, and a chip
enable circuit. The output voltage of these ICs is internally fixed.
In addition to low supply current by the merit of CMOS process, the chip enable function prolongs the battery
life.
Maximum operating input voltage is up to 18V, thus these ICs are very suitable for the power supply for
hand-held equipment and other power management applications using various AC adapters.
Since the package for these ICs is SOT-23-5 package, high density mounting of the ICs on boards is possible.
FEATURES
• Ultra-Low Supply Current..........................Typ.10µA
• Standby Mode ...........................................Typ.0.1µA
• Low Dropout Voltage................................ Typ.0.1V(IOUT=300mA,VOUT=5.0V,Depends on External Transister)
• High Output Voltage Accuracy ................. ±2.0%
• Small Packages ....................................... SOT-23-5 (Mini-mold)
• Output Voltage ......................................... Stepwise setting with a step of 0.1V in the range of 2.5V to
12.0V (Fixed type) or adjustable (with external divider
resistors can be set more than12.1V,
the reference voltage is 2.5V)
• Operating Input Voltage ........................... Max.18V
• Built-in Chip Enable Circuit (“H” active)
• Built-in Current Limit Circuit
• Output Short Current Limit Circuit
APPLICATIONS
• Power source for home appliances such as refrigerators, rice cookers, etc.
• Power source for car audio equipment, car navigation system, and ETC system.
• Power source for notebook PCs, digital TVs, cordless phones, and LAN system.
• Power source for copiers, printers, facsimiles, and scanners.
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