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ACE301 Datasheet(PDF) 7 Page - ACE Technology Co., LTD. |
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ACE301 Datasheet(HTML) 7 Page - ACE Technology Co., LTD. |
7 / 19 page ACE301 High-precision Low Voltage Detector VER 1.6 7 Output Current1 Output Current2 Output Delay Time Minimum Operation Voltage Detector Threshold Temperature Coefficient Iout1[mA] Iout2[mA] TPLH[us] VDDL[V] Δ-V DET/ΔTppm/℃ Condition Min. Typ. Condition Min. Typ. Max. Typ. Max. Condition Typ. NCH, VDS=0.05V, VDD=0.7V 0.01 0.05 NCH, VDS=0.5V Vdd=0.85V 0.1 0.5 20 0.5 0.7 -40℃~85℃ 100 Vdd=1.0V 0.2 1.0 VDD=1.5V 1.0 2.0 Function description High precision low temperature co-efficiency reference voltage is applied to the negative input of a comparator. Input voltage, divided by resistor array of Ra Rb and Rc, is applied to the positive input of the comparator. Output of the comparator controls a pair of NMOS and PMOS switches, generating the hysteresis. Output of the comparator passes a series of buffer to drive the output CMOS pair. +VDET, -VDET, VHYS can be calculated as follows: -VDET =VREF*(1+Ra/(Rb+Rc)) +VDET =VREF*(1+(Ra+Rb)/Rb)=VREF *(1+(Ra+Rc)/Rb) VHYS = +VDET-(-VDET)=VREF*(Ra+Rb+Rc)(1/Rb-1/(Rb+Rc)) |
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