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CS3845B Datasheet(PDF) 2 Page - Cherry Semiconductor Corporation |
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CS3845B Datasheet(HTML) 2 Page - Cherry Semiconductor Corporation |
2 / 6 page 2 Electrical Characteristics: 0≤TA≤70˚C, VCC=15V; RT=10kΩ, CT=3.3nF for sawtooth mode, unless otherwise stated PARAMETER TEST CONDITIONS MIN TYP MAX UNITS s Reference Section Output Voltage TJ=25˚C, IREF=1mA 4.90 5.00 5.10 V Line Regulation 12≤VCC≤25V 6 20 mV Load Regulation 1≤IREF≤20mA 6 25 mV Temperature Stability (Note 1) 0.2 0.4 mV/˚C Total Output Variation Line, Load, Temp. (Note 1) 4.82 5.18 V Output Noise Voltage 10Hz≤f≤10kHz, TJ=25˚C (Note 1) 50 µV Long Term Stability TA=125˚C, 1000 Hrs. (Note 1) 5 25 mV Output Short Circuit TA=25˚C -30 -100 -180 mA s Oscillator Section Initial Accuracy Sawtooth Mode, TJ=25˚C 475257 kHz Voltage Stability 12≤VCC≤25V 0.2 1.0 % Temperature Stability Sawtooth Mode TMIN≤TA≤TMAX (Note 1) 5 % Amplitude VOSC (peak to peak)(Note 1) 17 V Discharge TJ=25°C; (Note 1) 7.5 8.3 9.3 mA TMIN≤TA≤TMAX (Note 1) 7.2 9.5 mA s Error Amp Section Input Voltage VCOMP=2.5V 2.42 2.50 2.58 V Input Bias Current VFB=0V -0.3 -2.0 µA AVOL 2≤VOUT≤4V 65 90 dB Unity Gain Bandwidth (Note 1) 0.7 1.0 MHz PSRR 12≤VCC≤25V 60 70 dB Output Sink Current VFB=2.7V, VCOMP=1.1V 2 6 mA Output Source Current VFB=2.3V, VCOMP=5V -0.5 -0.8 mA VOUT HIGH VFB=2.3V, RL15kΩ to Gnd 5 6 V VOUT LOW VFB=2.7V, RL=15kΩ to VREF 0.7 1.1 V s Current Sense Section Gain (Notes 2&3) 2.85 3.00 3.15 V/V Maximum Input Signal VCOMP=5V (Note 2) 0.9 1.0 1.1 V PSRR 12≤VCC≤25V (Note 2) 70 dB Input Bias Current VSense=0V -2 -10 µA Delay to Output TJ=25˚C (Note 1) 150 300 ns s Output Section Output Low Level ISINK=20mA 0.1 0.4 V ISINK=200mA 1.5 2.2 V Output High Level ISOURCE=20mA 13.0 13.5 V ISOURCE=200mA 12.0 13.5 V Rise Time TJ=25˚C, CL=1nF (Note 1) 50 150 ns Fall Time TJ=25˚C, CL=1nF (Note 1) 50 150 ns |
Similar Part No. - CS3845B |
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Similar Description - CS3845B |
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