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ISL8841AAUZ Datasheet(PDF) 8 Page - Intersil Corporation |
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ISL8841AAUZ Datasheet(HTML) 8 Page - Intersil Corporation |
8 / 15 page 8 FN6320.3 April 18, 2007 Electrical Specifications ISL884xAM - Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application schematic. VDD = 15V, RT = 10kΩ, CT = 3.3nF, TA = -55 to +125°C (Note 7), Typical values are at TA = +25°C PARAMETER TEST CONDITIONS MIN TYP MAX UNITS UNDERVOLTAGE LOCKOUT START Threshold (ISL8840A, ISL8841A) 6.5 7.0 7.5 V START Threshold (ISL8843A, ISL8845A) 8.0 8.4 9.0 V START Threshold (ISL8842A, ISL8844A) (Note 10) 13.3 14.3 15.3 V STOP Threshold (ISL8840A, ISL8841A) 6.1 6.6 6.9 V STOP Threshold (ISL8843A, ISL8845A) 7.3 7.6 8.0 V STOP Threshold (ISL8842A, ISL8844A) 8.0 8.8 9.6 V Hysteresis (ISL8840A, ISL8841A) - 0.4 - V Hysteresis (ISL8843A, ISL8845A) - 0.8 - V Hysteresis (ISL8842A, ISL8844A) - 5.4 - V Startup Current, IDD VDD < START Threshold - 90 125 μA Operating Current, IDD (Note 8) - 2.9 4.0 mA Operating Supply Current, ID Includes 1nF GATE loading - 4.75 5.5 mA REFERENCE VOLTAGE Overall Accuracy Over line (VDD = 12V to 30V), load, temperature 4.900 5.000 5.050 V Long Term Stability TA = +125°C, 1000 hours (Note 9) - 5 - mV Current Limit, Sourcing -20 - - mA Current Limit, Sinking 5- - mA CURRENT SENSE Input Bias Current VCS = 1V -1.0 - 1.0 μA CS Offset Voltage VCS = 0V (Note 9) 95 100 105 mV COMP to PWM Comparator Offset Voltage VCS = 0V (Note 9) 0.80 1.15 1.30 V Input Signal, Maximum 0.97 1.00 1.03 V Gain, ACS = ΔVCOMP/ΔVCS 0 < VCS < 910mV, VFB = 0V 2.5 3.0 3.5 V/V CS to OUT Delay -35 60 ns ERROR AMPLIFIER Open Loop Voltage Gain (Note 9) 60 90 - dB Unity Gain Bandwidth (Note 9) 1.0 1.5 - MHz Reference Voltage VFB = VCOMP 2.460 2.500 2.535 V FB Input Bias Current VFB = 0V -1.0 -0.2 1.0 μA COMP Sink Current VCOMP = 1.5V, VFB = 2.7V 1.0 - - mA COMP Source Current VCOMP = 1.5V, VFB = 2.3V -0.4 - - mA COMP VOH VFB = 2.3V 4.80 - VREF V COMP VOL VFB = 2.7V 0.4 - 1.0 V PSRR Frequency = 120Hz, VDD = 12V to 30V (Note 9) 60 80 - dB OSCILLATOR Frequency Accuracy Initial, TA = +25°C 485153 kHz Frequency Variation with VDD TA = +25°C, (f30V - f10V)/f30V -0.2 1.0 % Temperature Stability (Note 9) - - 5 % ISL8840A, ISL8841A, ISL8842A, ISL8843A, ISL8844A, ISL8845A |
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