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R1140Q371B-TR Datasheet

  • R1140Q371B-TR

  • Positive Fixed Voltage Regulator

  • 15頁(yè)

  • ETC

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'2001.3.1
SC82 120mA LDO REGULATOR
R1140Q SERIES
s
OUTLINE
The R1140Q Series are voltage regulator ICs with high output voltage accuracy, low supply current, low ON-resistance, and
high ripple rejection by CMOS process. 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. The line transient response and load transient
response of the R1140Q Series are excellent, thus these ICs are very suitable for the power supply for hand-held
communication equipment.
The output voltage of these ICs is internally fixed with high accuracy. Since the package for these ICs is SC-82AB (Super
Mini-mold) package, high density mounting of the ICs on boards is possible.
s
FEATURES
Ultra-Low Supply Current......................................... TYP. 75碌A(chǔ)
Standby Mode ........................................................... TYP. 0.1碌A(chǔ)
Low Dropout Voltage ................................................ TYP. 0.15V(I
OUT
=100mA Output Voltage=3.0V Type)
High Ripple Rejection ............................................... TYP. 75dB(f=1kHz)
Low Temperature-Drift Coefficient of Output Voltage TYP. 鹵100ppm/擄C
Excellent Line Regulation ......................................... TYP. 0.05%/V
High Output Voltage Accuracy.................................. 鹵2.0%
Excellent Dynamic Response
Small Package ..........................................................SC-82AB(Super Mini-mold)
Output Voltage...........................................................Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is
possible
Built-in chip enable circuit (B/D: active high)
Built-in fold-back protection circuit ..........................TYP. 40mA (Current at short mode)
s
APPLICATIONS
Power source for cellular phones such as GSM, CDMA and various kinds of PCS.
Power source for electrical appliances such as cameras, VCRs and camcorders.
Power source for battery-powered equipment.
Rev. 1.11
-1-

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