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R1122N301B-TR Datasheet

  • R1122N301B-TR

  • LOW NOISE 150mA LDO REGULATOR

  • 22頁

  • RICOH

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2000. 3.13
LOW NOISE 150mA LDO REGULATOR
R1122N SERIES
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OUTLINE
The R1122N Series are voltage regulator ICs with high output voltage accuracy, extremely 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, 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 R1122N 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 fixed with high accuracy.
Since the package for these ICs are SOT-23-5 (Mini-mold) package, high density mounting of the ICs on boards is possible.
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FEATURES
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Ultra-Low Supply Current.................................................TYP. 100mA
Standby Mode ...................................................................TYP. 0.1mA
Low Dropout Voltage ........................................................TYP. 0.19V (I
OUT
= 100mA, 3V Output type)
High Ripple Rejection .......................................................TYP. 80dB (f = 1kHz)
Low Temperature-Drift Coefficient of Output Voltage .....TYP.
鹵100ppm/擄C
Excellent Line Regulation .................................................TYP. 0.05%/V
High Accuracy Output Voltage..........................................鹵2.0%
Small Package ..................................................................SOT-23-5 (Mini-mold)
Output Voltage ..................................................................Stepwise setting with a step of 0.1V in the range of 1.5V to 5.0V
is possible.
Built-in chip enable circuit (2 Types; A: active 鈥淟鈥? B: active 鈥淗鈥?
Built-in Fold-back protection circuit .................................Short Current Typ. 30mA
Pinout ................................................................................Similar to the TK112, TK111
Ceramic Capacitors are Recommendable to be used with this IC.
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APPLICATIONS
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Power source for cellular phones such as GSM, CDMA, PCS and so forth.
Power source for domestic appliances such as cameras, VCRs and camcorders.
Power source for battery-powered equipment.
Rev. 1.10
-1-

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