Datasheet

LTC2904/LTC2905
5
29045fd
TEMPERATURE (oC)
THRESHOLD VOLTAGE, V
RT10
(V)
29045 G07
0.950
0.940
0.930
0.920
0.910
0.900
0.890
0.880
0.870
–50 100
25
75
–25
0
50
5%
7.5%
10%
TEMPERATURE (oC)
I
V1
(MA)
21.5
21.0
20.5
20.0
19.5
19.0
29045 G08
–50 100
25
75
–25
0
50
V1 = 5V
V2 = 3.3V
S1
=
S2
= TOL = 1.4V
TEMPERATURE (oC)
I
V2
(MA)
29045 G09
1.8
1.7
1.6
1.5
1.4
1.3
1.2
–50 100
25
75
–25
0
50
V1 = 5V
V2 = 3.3V
S1
=
S2
= TOL = 1.4V
TYPICAL PERFORMANCE CHARACTERISTICS
TEMPERATURE (oC)
I
V2
(MA)
29045 G10
20.0
19.5
19.0
18.5
18.0
17.5
17.0
–50 100
25
75
–25
0
50
V1 = 2.5V
V2 = 3.3V
S1 = S2 = TOL = 1.4V
COMPARATOR OVERDRIVE VOLTAGE (% OF V
RTX
)
0.1
TYPICAL TRANSIENT DURATION (Ms)
700
600
500
400
300
200
100
0
1 10 100
29045 G11
RESET OCCURS
ABOVE CURVE
C
TMR
(FARAD)
10p 100p 1n 10n 100n 1M
RESET TIME OUT PERIOD, t
RST
(ms)
29045 G12
10000
1000
100
10
1
0.1
TEMPERATURE (oC)
RESET TIME-OUT PERIOD, t
RST
(ms)
29045 G13
235
230
225
220
215
210
205
200
195
–50 100
25
75
–25
0
50
CRT = 22nF
(FILM)
V1 (V)
0
RST OUTPUT VOLTAGE (V)
5
4
3
2
1
0
–1
1234
29045 G14
5
V2 = S1 = S2 = TOL = V1
10k PULL-UP RESISTOR
V1 (V)
0
RST OUTPUT VOLTAGE (V)
5
4
3
2
1
0
–1
1234
29045 G15
5
V2 = S1 = S2 = TOL = V1
10k PULL-UP RESISTOR
Reset Timeout Period (t
RST
)
vs Temperature RST Output Voltage vs V1 RST Output Voltage vs V1
I
V2
vs Temperature
Typical Transient Duration
vs Comparator Overdrive (V1, V2)
Reset Time Out Period (t
RST
)
vs Capacitance (C
TMR
)
1V Threshold Voltage
vs Temperature I
V1
vs Temperature I
V2
vs Temperature
Specifi cations are at T
A
= 25°C unless otherwise noted.