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LR8558-21PRM Datasheet(PDF) 6 Page - Leshan Radio Company |
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LR8558-21PRM Datasheet(HTML) 6 Page - Leshan Radio Company |
6 / 11 page Iout=100mA 88 120 mV Iout=300mA 270 350 mV Vdrop1 Dropout Voltage,Vout≥2.8V Iout=500mA 460 600 mV Vout Vin Vout ⋅ ∆ ∆ Line Regulation Iout=40mA 2.8V≤Vin≤8V 0.05 0.2 %/V Vout ∆ / Iout ∆ Load Regulation Vin=Set Vout+1V 1mA≤Iout≤500mA 20 40 mV Iss Supply Current Vin=Set Vout+1V 75 90 uA Istandby Supply Current (Srandby) Vin=Set Vout+1V Vce=GND 0.1 1.0 uA Vout T Vout ⋅ ∆ ∆ Output Voltage Temperature Coefficiency Iout=30mA ± 100 ppm/ °C PSRR Ripple Rejection F=100Hz, Ripple=0.5Vp-p Vin=Set Vout+1V 65 dB Ilim Short Current Limit Vout=0V 200 mA Rpd CE Pull down Resistance 2.0 5.0 10.0 M Ω Vceh CE Input Voltage “H” 1.5 Vin V Vcel CE Input Voltage “L” 0 0.25 V en Output Noise BW=10Hz~100kHz 47 uVrms 1. Vdrop=Vin1-(Vout2*0.98) Vout2 is the output voltage when Vin=Vout1+1.0V and Iout=300mA or Iout=500mA. Vin1 is the input voltage at which the output voltage becomes 98% of Vout1 after gradually decreasing the input voltage. Application hints: NOTE1: Input capacitor (Cin=1uF) is recommended in all application circuit. NOTE2: Output capacitor (Cout=3.3uF/4.7uF) is recommended in all application to assure the stability of circuit. Typical Application Circuit: Explanation: LR8558 series is a group of positive voltage output, low noise, low power consumption, low dropout voltage regulator. LR8558 can provide output value in the range of 1.2V~4.5V every 0.1V step. It also can be customized on command. LR8558 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. LR8558 has excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. And it uses trimming technique to guarantee output voltage accuracy within±2%. LR8558 Leshan Radio Co ., Ltd 6/11 |
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