LTC2904 Linear Technology, LTC2904 Datasheet - Page 5

• Manufacturer Part Number: LTC2904
• Description: (LTC2904 / LTC2905) Precision Dual Supply Monitors
• Manufacturer: Linear Technology

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Specifications are at T
TYPICAL PERFOR A CE CHARACTERISTICS
20.0
19.5
19.0
18.5
18.0
17.5
17.0
235
230
225
220
215
210
205
200
195
–1
5
4
3
2
1
0
–50
–50
0
I
Reset Time-Out Period (t
vs Temperature
RST Output Voltage vs V1
V2
CRT = 22nF
(FILM)
V2 = S1 = S2 = TOL = V1
10pF CAPACITOR AT RST
V1 = 2.5V
V2 = 3.3V
S1 = S2 = TOL = 1.4V
vs Temperature
–25
–25
1
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
2
V1 (V)
25
25
A
= 25°C unless otherwise noted.
3
50
50
RST
W
4
75
75
)
29045 G13
29045 G16
29045 G10
100
100
U
5
700
600
500
400
300
200
100
–1
5
4
3
2
1
0
5
4
3
2
1
0
0
COMPARATOR OVERDRIVE VOLTAGE (% OF V
0.1
0
0
Typical Transient Duration vs
Comparator Overdrive (V1, V2)
RST Output Voltage vs V1
RST Pull-Down Current (I
vs Supply Voltage (V
V2 = S1 = S2 = TOL = V1
10k PULL-UP RESISTOR
V2 = S1 = S2 = TOL = V1
NO PULL-UP R
1
1
SUPPLY VOLTAGE, V
1
2
RESET OCCURS
2
ABOVE CURVE
V1 (V)
RST AT 150mV
RST AT 50mV
3
3
CC
10
CC
)
(V)
RST
4
4
)
29045 G14
29045 G17
29045 G11
RTX
100
5
5
)
LTC2904/LTC2905
10000
1000
100
0.1
–1
10
5
4
3
2
1
0
5
4
3
2
1
0
1
10p
0
0
Reset Time Out Period (t
vs Capacitance (C
RST Output Voltage vs V1
RST Pull-Down Current (I
vs Supply Voltage (V
V2 = S1 = S2 = TOL = V1
10k PULL-UP RESISTOR
S1 = V2 = V1
TOL = S2 = GND
NO PULL-UP R
100p
1
1
SUPPLY VOLTAGE, V
C
TMR
1n
2
2
V1 (V)
(FARAD)
TMR
RST AT 150mV
10n
RST AT 50mV
3
3
CC
)
CC
)
sn29045 29045fs
RST
(V)
RST
100n
4
4
)
)
29045 G12
29045 G15
29045 G18
5
1µ
5
5