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Description
The R1140Q251B is a voltage regulator IC from the R1140Q Series. It is designed with high output voltage accuracy, low supply current, low ON resistance, and high ripple rejection by CMOS process. These voltage regulator ICs consist of a voltage reference unit, an error amplifier, resistors for setting the output voltage, a current limit circuit, and a chip enable circuit. The R1140Q251B is suitable for power supply in hand-held communication equipment and offers low dropout voltage and a chip enable function. The package for these ICs is SC-82AB (Super Mini-mold), allowing for high density mounting on boards.
Specifications and features
• Ultra-Low Supply Current: TYP. 75µA
• Standby Mode: TYP. 0.1µA
• Low Dropout Voltage: TYP. 0.15V (IOUT=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)Application Scenarios
• 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 equipmentComparison
AdvantagesNoneDisadvantagesNone -
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Datasheet
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- Datasheet: Download R1140Q251B
- Chipdatas Part: CD89-R1140Q251B
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- Last Updated: 2024/10/01 10:01 +0800
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