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R1151N7.8C-TR Datasheet

  • R1151N7.8C-TR

  • Analog IC

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  • 26页

  • ETC

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'2002.1.25
Boost type Voltage Regulator with Reset
R1151N SERIES
s
OUTLINE
The R1151N Series are CMOS-based boost type voltage regulator ICs with high output voltage accuracy, low supply current,
and high ripple rejection. Each of these voltage regulator controllers consists of a voltage reference unit, an error amplifier,
comparators, resistors for output and reset voltage setting, a current limit protection circuit, and a chip enable circuit.
In addition to low consumption current by CMOS process, the chip enable function prolongs the battery life. Dynamic
response and ripple rejection of the R1151N Series are excellent, further these are low noise type, plus maximum operating
input voltage tolerance is up to 18.5V, thus these ICs are very suitable for the power supply for hand-held equipment and other
power management applications using AC adapter input voltage.
The output voltage of these ICs is internally fixed with high accuracy. Since the package for these ICs are SOT-23-6 (Mini-
mold) package, high density mounting of the ICs on boards is possible.
s
FEATURES
Ultra-Low Supply Current......................................... TYP. 70碌A (I
OUT
=0mA)
Standby Mode ........................................................... TYP. 0.1碌A
Low Dropout Voltage ................................................ TYP. 0.1V(I
OUT
=100mA *Depends on External Transistor)
High Ripple Rejection ............................................... TYP. 60dB(f=1kHz)
Low Temperature-Drift Coefficient of Output Voltage TYP. 卤100ppm/掳C
High Output Voltage Accuracy.................................. 卤2.0%
Excellent Dynamic Response
Small Package ..........................................................SOT-23-5(Mini-mold)
Output Voltage...........................................................Stepwise setting with a step of 0.1V in the range of 2.5V to 9.0V
Built-in chip enable circuit ( 2 types; A: active low , B: active high)
Output Capacitor .......................................................Tantalum type recommendation (or Ceramic + Series Resistor)
Built-in output voltage detector.................................with delay (C version)
Detector Threshold Tolerance ................................... 卤2.5%
Detector Threshold Voltage ...................................... Stepwise setting with a step of 0.1V in the range of 1.7V to 8.0V
Operating Input Voltage ............................................Max. 18.5V
s
APPLICATIONS
Power source for handheld equipment such as cameras and videos.
Power source for home appliances.
Power source for battery-powered equipment.
Rev. 1.11
-1-

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