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