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LTC2900 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC2900
Description  Low Voltage Supervisorwith 27 Selectable Thresholds and Watchdog Timer
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC2900 Datasheet(HTML) 4 Page - Linear Technology

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LTC2917/LTC2918
4
29178f
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCC(MIN)
Minimum Supply Voltage
⎯R⎯S⎯T in Correct Logic State
●
0.8
V
VCC(UVLO)
Supply Undervoltage Lockout
●
1.5
V
VCC(SHUNT)
Shunt Regulation Voltage
IVCC = 0.5mA
●
5.7
6.2
7.0
V
ICC
VCC Pin Current
SEL1, SEL2, TOL, ⎯M⎯R = Open
SEL1, SEL2, TOL = GND (LTC2917)
⎯M⎯R = VCC (LTC2918)
●
●
30
45
50
80
μA
μA
Monitor Input (VM)
VMT120
12V, 5% Reset Threshold
12V, 10% Reset Threshold
12V, 15% Reset Threshold
●
●
●
11.04
10.44
9.84
11.22
10.62
10.02
11.40
10.80
10.20
V
V
V
VMT50
5V, 5% Reset Threshold
5V, 10% Reset Threshold
5V, 15% Reset Threshold
●
●
●
4.600
4.350
4.100
4.675
4.425
4.175
4.750
4.500
4.250
V
V
V
VMT33
3.3V, 5% Reset Threshold
3.3V, 10% Reset Threshold
3.3V, 15% Reset Threshold
●
●
●
3.036
2.871
2.706
3.086
2.921
2.756
3.135
2.970
2.805
V
V
V
VMT25
2.5V, 5% Reset Threshold
2.5V, 10% Reset Threshold
2.5V, 15% Reset Threshold
●
●
●
2.300
2.175
2.050
2.338
2.213
2.088
2.375
2.250
2.125
V
V
V
VMT18
1.8V, 5% Reset Threshold
1.8V, 10% Reset Threshold
1.8V, 15% Reset Threshold
●
●
●
1.656
1.566
1.476
1.683
1.593
1.503
1.710
1.620
1.530
V
V
V
VMT15
1.5V, 5% Reset Threshold
1.5V, 10% Reset Threshold
1.5V, 15% Reset Threshold
●
●
●
1.380
1.305
1.230
1.403
1.328
1.253
1.425
1.350
1.275
V
V
V
VMT12
1.2V, 5% Reset Threshold
1.2V, 10% Reset Threshold
1.2V, 15% Reset Threshold
●
●
●
1.104
1.044
0.984
1.122
1.062
1.002
1.140
1.080
1.020
V
V
V
VMT10
1V, 5% Reset Threshold
1V, 10% Reset Threshold
1V, 15% Reset Threshold
●
●
●
0.920
0.870
0.820
0.935
0.885
0.835
0.950
0.900
0.850
V
V
V
VMTADJ
ADJ (0.5V), 5% Reset Threshold
ADJ (0.5V), 10% Reset Threshold
ADJ (0.5V), 15% Reset Threshold
●
●
●
460.0
435.0
410.0
467.5
442.5
417.5
475.0
450.0
425.0
mV
mV
mV
RVM
VM Input Impedance (Note 4)
Fixed Threshold Modes
●
0.5
8
MΩ
IVM(ADJ)
ADJ Input Current
VM = 0.5V
●
±15
nA
Three-State Inputs (SEL1, SEL2), (TOL, LTC2917)
VTPIN, LOW
Low Level Input Voltage
●
0.5
V
VTPIN, HIGH
High Level Input Voltage
●
1.4
V
VTPIN, Z
Pin Voltage when Open
I = 0μA
0.9
V
ITPIN, Z
Allowable Leakage in Open State
●
±5
μA
ITPIN, H/L
Pin Input Current
VTPIN = 0V, VCC
●
±20
μA
Reset Timer Control (RT)
IRT(UP)
RT Pull Up Current
VRT = 0.25V
●
–2
–3
–4
μA
IRT(DOWN)
RT Pull Down Current
VRT = 1.1V
●
234
μA
IRT(INT)
Internal RT VCC Detect Current
VRT = VCC
●
18
μA
VRT(INT, LH)
RT Internal Timer Threshold
VRT Rising, Referenced to VCC
●
–100
–160
–300
mV
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 2.5V, unless otherwise noted. (Note 2)


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