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Description
The R1140Q291D-TR is a voltage regulator IC with high output voltage accuracy, low supply current, low ON resistance, and high ripple rejection by CMOS process. It consists of a voltage reference unit, an error amplifier, resistors for setting the output voltage, a current limit circuit, and a chip enable circuit. This IC performs with low dropout voltage and a chip enable function, making it suitable for the power supply of handheld communication equipment. The output voltage is internally fixed with high accuracy and it comes in an SC-82AB (Super Mini-mold) package, 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 equipment
Comparison
Advantages- High output voltage accuracy
- Low supply current
- Low ON resistance
- High ripple rejection
- Low dropout voltage
- Excellent line regulation
- Small package size
- Built-in chip enable and fold-back protection circuits
Disadvantages- Limited output voltage range (1.5V to 4.0V)
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Datasheet
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Shopping guide
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Additional Information
- Datasheet: Download R1140Q291D-TR
- Chipdatas Part: CD93-R1140Q291D-TR
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/10/01 10:00 +0800
Refund
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- Full or Partial Refund , If the item is not as described
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