LTC1326 Datasheet, PDF (3/16 Pages) Linear Technology – Micropower Precision Triple Supply Monitors

LTC1326/LTC1326-2.5
ELECTRICAL CHARACTERISTICS
V_CC3 = 3.3V, V_CC5 = 5V (for LTC1326),V_CC25 = 2.5V (for LTC1326-2.5), V_CCA = V_CC3, T_A = 25°C unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
I_VCC5
I_VCC25
I_VCCA
t_RST
t_SRST
t_UV
I_PBR
V_IL
V_IH
t_PW
t_DB
V_CC5 Input Current (LTC1326)
V_CC25 Input Current (LTC1326-2.5)
V_CCA Input Current
Reset Pulse Width
Soft Reset Pulse Width
V_CC Undervoltage Detect to RST
PBR Pull-Up Current
PBR, RST Input Low Voltage
PBR, RST Input High Voltage
PBR Min Pulse Width
PBR Debounce
V_CC5 = 5V
V_CC25 = 2.5V
V_CCA = 1V
0°C ≤ T_A ≤ 70°C
– 40°C ≤ T_A ≤ 85°C
RST Low with 10kΩ Pull-Up to V_CC3
0°C ≤ T_A ≤ 70°C
– 40°C ≤ T_A ≤ 85°C
SRST Low with 10kΩ Pull-Up to V_CC3
V_CC25, V_CC3 or V_CCA Less Than Reset
Threshold V_RT by More Than 1%
PBR = 0V
0°C ≤ T_A ≤ 70°C
– 40°C ≤ T_A ≤ 85°C
Deassertion of PBR Input to SRST
Output (PBR Pulse Width = 1µs)
q
4
7
q
2.8
7
q
–5
0
5
q –15
0
15
q 140
200
280
q 140
200
300
q
50
100 200
13
q
3
q
3
7
10
7
15
q
0.8
q
2
q
40
q
20
35
t_PB
PBR Assertion Time for Transition PBR Held Less Than V_IL
from Soft to Hard Reset Mode
0°C ≤ T_A ≤ 70°C
– 40°C ≤ T_A ≤ 85°C
q 1.4
2.0
2.8
q 1.4
2.0
3.0
V_OL
RST Output Voltage Low
I_SINK = 5mA
q
0.15
0.4
I_SINK = 100µA,
V_CC3 = 1V, V_CC5 = 0V
q
0°C ≤ T_A ≤ 70°C
V_CC3 = 0V, V_CC5 = 1V
q
V_CC3 = 1V, V_CC5 = 1V
q
0.05
0.4
0.05
0.4
0.05
0.4
I_SINK = 100µA,
V_CC3 = 1.1V, V_CC5 = 0V
q
– 40°C ≤ T_A ≤ 85°C V_CC3 = 0V, V_CC5 = 1.1V
q
V_CC3 = 1.1V, V_CC5 = 1.1V
q
0.05
0.4
0.05
0.4
0.05
0.4
I_SINK = 100µA,
V_CC3 = 1V, V_CC25 = 0V
q
0°C ≤ T_A ≤ 70°C
V_CC3 = 0V, V_CC25 = 1V
q
V_CC3 = 1V, V_CC25 = 1V
q
0.05
0.4
0.05
0.4
0.05
0.4
I_SINK = 100µA,
V_CC3 = 1.1V, V_CC25 = 0V
q
– 40°C ≤ T_A ≤ 85°C V_CC3 = 0V, V_CC25 = 1.1V
q
V_CC3 = 1.1V, V_CC25 = 1.1V q
0.05
0.4
0.05
0.4
0.05
0.4
SRST Output Voltage Low
I_SINK = 2.5mA
q
0.15
0.4
RST Output Voltage Low
I_SINK = 2.5mA
q
0.15
0.4
V_OH
RST Output Voltage High (Note 3)
I_SOURCE = 1µA
q V_CC3 – 1
SRST Output Voltage High (Note 3) I_SOURCE = 1µA
q V_CC3 – 1
RST Output Voltage High
I_SOURCE = 600µA
q V_CC3 – 1
t_PHL
Prop Delay RST to RST
C_RST = 20pF
25
High Input to Low Output
t_PLH
Prop Delay RST to RST
C_RST = 20pF
45
Low Input to High Output
UNITS
µA
µA
nA
nA
ms
ms
µs
µs
µA
µA
V
V
ns
ms
s
s
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
ns
ns
3