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AZ3845P Datasheet(PDF) 5 Page - Advanced Analog Technology, Inc. |
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AZ3845P Datasheet(HTML) 5 Page - Advanced Analog Technology, Inc. |
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5 / 13 page  CURRENT MODE PWM CONTROLLER AZ3842/3/4/5 Advanced Analog Circuits Data Sheet 5 March 2003 Rev: 1.0 Parameter Symbol Conditions Min Typ Max Unit REFERENCE SECTION Reference Output Voltage VREF TJ=25oC, IREF=1mA 4.90 5.00 5.10 V Line Regulation ∆VREF 12V ≤ VCC ≤25V 4 15 mV Load Regulation ∆VREF 1mA ≤ IREF ≤20mA 4 15 mV Short Circuit Output Current ISC TA=25oC -100 -180 mA Temperature Stability 0.2 0.4 mV/oC Output Noise Voltage (Note 6) 50 µV Long Term Stability TA=85oC, 1000 hours 525 mV OSCILLATOR SECTION Oscillation Frequency f TJ=25oC 47 52 57 KHz Frequency Change with Voltage ∆f/f 12V ≤ VCC ≤ 25V 0.2 1 % Oscillator Amplitude VOSC Pin 4, peak to peak (Note 6) 1.7 V Temperature Stability (Note 6) 2.5 % ERROR AMPLIFIER SECTION Input Bias Current IBIAS (Note 6) -0.1 -2 µA Input Voltage VI Vpin 1=2.5V 2.42 2.50 2.58 V Open Loop Voltage Gain AVOL 2V ≤ VO ≤ 4V 65 90 dB Power Supply Rejection Ratio PSRR 12V ≤ VCC ≤ 25V 60 70 dB Output Sink Current ISINK Vpin2=2.7V, Vpin1=1.1V 2 4 mA Output Source Current ISOURCE Vpin2=2.3V, Vpin1=5V -0.5 -0.8 mA High Output Voltage VOH Vpin2=2.3V, RL=15kΩ to GND 5 6 V Low Output Voltage VOL Vpin2=2.7V, RL=15kΩ to Pin 8 0.8 1.1 V CURRENT SENSE SECTION Gain GV (Note 4, 5) 2.85 3 3.15 V/V Maximum Input Signal VI(MAX) Vpin1=5V(Note 4) 0.9 1 1.1 V Power Supply Rejection Ratio PSRR 12V ≤ VCC ≤ 25V (Note 4, 6) 70 dB Input Bias Current IBIAS -3 -10 µA Delay to Output Vpin3 = 0 to 2V (Note 6) 150 300 ns OUTPUT SECTION Low Output Voltage VOL ISINK = 20mA 0.1 0.4 V ISINK = 200mA 1.4 2.2 V High Output Voltage VOH ISOURCE = 20mA 13 14 V ISOURCE = 200mA 12 13 V Rise Time tR TJ=25oC, CL=1nF (Note 6) 50 150 ns (VCC=15V, RT=10kΩ CT=3.3nF, TA= -40oC to +85oC, unless otherwise specified.) Electrical Characteristics |
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