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ADN8831ACPZ-REEL7 Datasheet(PDF) 5 Page - Analog Devices |
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ADN8831ACPZ-REEL7 Datasheet(HTML) 5 Page - Analog Devices |
5 / 20 page Data Sheet ADN8831 Rev. A | Page 5 of 20 Parameter1 Symbol Test Conditions/Comments Min Typ Max Unit LOGIC Controls Logic Low Output Voltage V OL TMPGD, SYNCO, I OUT = 0 A 0.2 V Logic High Output Voltage V OH TMPGD, SYNCO, I OUT = 0 A V DD − 0.2 V Logic Low Input Voltage V IL 0.2 V Logic High Input Voltage V IH 3 V Output High Impedance V DD = 5.0 V 35 Ω Output Low Impedance V DD = 5.0 V 20 Ω Output High Impedance V DD = 3.0 V 50 Ω Output Low Impedance V DD = 3.0 V 25 Ω TEC CURRENT MEASUREMENT ITEC Gain A V, ITEC (V ITEC – VREF/2) / (VLFB − VCS) 25 V/V ITEC Output Range High V ITEC, HIGH No load V DD − 0.05 V ITEC Output Range Low V ITEC, LOW 0.05 V ITEC Input Range2 V CS, VLFB 0 V DD V ITEC Bias Voltage V ITEC, B V LFB = VCS = 0 1.10 1.20 1.30 V Maximum ITEC Driving Current I OUT, TEC ±1.5 mA TEC VOLTAGE MEASUREMENT VTEC Gain A V, VTEC (V VTEC – VREF/2)/(VLFB − VSFB) 0.23 0.25 0.28 V/V VTEC Output Range2 V VTEC V DD = 5.0 V 0.05 2.5 V VTEC Bias Voltage2 V VTEC, B V LFB = VSFB = 0 V 1.20 1.25 1.35 V VTEC Output Load Resistance R VTEC I VTEC = 300 μA 35 Ω VOLTAGE LIMIT VLIM Gain A V, LIM (V LFB − VSFB)/VVLIM 5 V/V VLIM Input Range2 V VLIM 0 V DD V VLIM Input Current, Cooling I VLIM, COOL V OUT2 < VREF/2 100 nA VLIM Input Current, Heating I VLIM, HEAT V OUT2 > VREF/2 I FREQ mA VLIM Input Current Accuracy, Heating I VLIM, HEAT I VLIM/IFREQ 0.8 1.0 1.18 A/A CURRENT LIMIT ILIMC Input Voltage Range V ILIMC V REF/2 V DD − 1 V ILIMH Input Voltage Range V ILIMH 0.1 V REF/2 V ILIMC Limit Threshold V TH, ILIMC V ITEC = 2.0 V, RS = 20 mΩ 1.98 2.0 2.02 V ILIMH Limit Threshold V TH, ILIMH V ITEC = 0.5 V 0.48 0.5 0.52 V TEMPERATURE GOOD High Threshold V OUT1, TH1 IN2M tied to OUT2, V IN2P = 1.5 V 1.55 1.60 V Low Threshold V OUT1, TH2 IN2M tied to OUT2, V IN2P = 1.5 V 1.40 1.45 V 1 Logic inputs meet typical CMOS I/O conditions for source/sink current (~1 µA). 2 Guaranteed by design or indirect test methods. 3 The ADN8831 does not work when the supply voltage is less than UVLO. |
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