General DescriptionThe CYP7903 series is a group of positive
voltage output, three-pin regulators, that provide a high current
even when the input/output voltage differential is small. Low power
consumption and high accuracy is achieved through CMOS and laser
trimming technologies. The CYP7903 consists of a high-precision
voltage reference, an error amplification circuit, and a current
limited output driver. Transient response to load variations have
proved in comparison to the existing series. FeaturesLow Quiescent
Current: typical 1.6μATemperature Stability: ±50ppm/ºCHigh input
voltage: 40VOutput voltage accuracy: tolerance ±2%Low temperature
coefficientDropout Voltage: 20mV@IOUT=10mAMaximum Output Current:
1AThe chip has the functions of overheat protection, over current
protection and output short circuit
protectionPackages:SOT89-3L,SOT223 and TO252
Applications Industrial controlSmart meters,
instruments and metersBattery supply setWireless communication
equipmentAutomotive electronicsPinAssignment
Application CircuitsElectrical CharacteristicsCYP7903 Series
(Unless otherwise indicated:
Ta=25ºC)PARAMETERCONDITIONSMINTYPMAXUNITOutputVoltage1VIN=
VOUT(S)+2V,IOUT=10mAVOUT(S) x0.98VOUT(S)VOUT(S)
x1.02VDropoutVoltage2IOUT=1mA 48mVIOUT=1A 10001500Line
RegulationVOUT(S)+2V≤VIN≤40VIOUT =1mA 0.010.02%/VLoad
RegulationVIN=VOUT(S)+2V
1mA≤IOUT≤300mAVOUT(S)≤10V 2080mVVOUT(S)>10V 85150TemperatureStabilityVIN
= VOUT(S)+2V,IOUT=10mA-40ºC≤Ta≤85ºC ±50 ppm/ºCQuiescent
Currentno loadVOUT(S)
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