R1140Q181B-TR 参数 Datasheet PDF下载

'2001.3.1

SC82 120mA LDO REGULATOR

R1140Q SERIES

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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.

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FEATURES

Ultra-Low Supply Current......................................... TYP. 75µA

Standby Mode ........................................................... TYP. 0.1µA

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. ±100ppm/°C

Excellent Line Regulation ......................................... TYP. 0.05%/V

High Output Voltage Accuracy.................................. ±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)

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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

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