LTC690IS8#PBF Linear Technology, LTC690IS8#PBF Datasheet - Page 4

• Manufacturer Part Number: LTC690IS8#PBF
• Description: IC MPU SUPERVISORY CIRCUIT 8SOIC
• Manufacturer: Linear Technology
• Type: Simple Reset/Power-On Resetr

Specifications of LTC690IS8#PBF

• Number Of Voltages Monitored: 1
• Output: Open Drain or Open Collector
• Reset: Active Low
• Reset Timeout: 35 ms Minimum
• Voltage - Threshold: 4.65V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Number Of Elements: 1
• Monitored Voltage 1 (typ): 4.65V
• Battery Backup Switching: Yes
• Watchdog Timer: Yes
• Chip Enable Signals: Yes
• Reset Active Time: 70ms
• Manual Reset: No
• Package Type: SOIC N
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (max): 5.5V
• Reset Threshold Voltage (max): 4.75V
• Reset Threshold Voltage (min): 4.5V
• Family Name: LTC690
• Power Dissipation: 500mW
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Power Fail Detection: Yes
• Mounting: Surface Mount
• Pin Count: 8
• Supply Current: 1.5mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS
LTC690/LTC691
LTC694/LTC695
range, otherwise specifications are at T
PARAMETER
Battery Back-Up Switching
Operating Voltage Range
V
V
Supply Current (Exclude I
Supply Current in Battery Back-Up Mode
Battery Standby Current (+ = Discharge, – = Charge)
Battery Switchover Threshold, V
Battery Switchover Hysteresis
BATT ON Output Voltage (Note 4)
BATT ON Output Short-Circuit Current (Note 4)
Reset and Watchdog Timer
Reset Voltage Threshold
Reset Threshold Hysteresis
Reset Active Time (LTC690/91) (Note 5)
Reset Active Time (LTC694/95) (Note 5)
Watchdog Timeout Period, Internal Oscillator
Watchdog Timeout Period, External Clock (Note 6)
Reset Active Time PSRR
Watchdog Timeout Period PSRR, Internal OSC
Minimum WDI Input Pulse Width
RESET Output Voltage at V
RESET and LOW⎯LINE Output Voltage (Note 4)
RESET and WDO Output Voltage (Note 4)
4
OUT
OUT
Output Voltage
in Battery Back-Up Mode
OUT
CC
)
= 1V
CC
– V
BATT
A
= 25°C. V
CONDITIONS
V
V
I
I
I
I
V
5.5 > V
Power Up
Power Down
I
BATT ON = V
BATT ON = 0V Source Current
OSC SEL HIGH, V
OSC SEL HIGH, V
Long Period, V
Short Period, V
Long Period
Short Period
V
I
I
I
I
I
OUT
OUT
OUT
OUT
SINK
SINK
SINK
SOURCE
SINK
SOURCE
CC
BATT
CC
IL
CC
= 0.4V, V
= 0V, V
= 1mA
= 50mA
= 250μA, V
= 50mA
= 3.2mA
= 10μA, V
= 1.6mA, V
= 1.6mA, V
= full operating range, V
CC
= 1μA, V
= 1μA, V
> V
BATT
The
IH
OUT
BATT
CC
= 3.5V
CC
CC
= 2.8V
CC
l
CC
CC
CC
CC
Sink Current
CC
CC
= 5V
+ 0.2V
= 5V
= 1V
< V
denotes specifications which apply over the operating temperature
= 4.25V
= 5V
= 5V
= 4.25V
= 5V
= 5V
BATT
BATT
= 2.8V, unless otherwise noted.
l
l
l
l
l
l
l
l
l
l
V
V
V
V
CC
CC
CC
BATT
4032
MIN
4.75
2.00
–0.1
–0.1
160
140
960
200
0.5
4.5
1.2
3.5
3.5
40
35
80
70
– 0.05
– 0.10
– 0.50 V
1
– 0.1 V
V
V
CC
CC
CC
BATT
0.04
0.04
4.65
TYP
200
200
100
100
0.6
0.6
1.6
1.6
– 0.005
– 0.005
– 0.250
70
50
20
35
40
50
50
1
1
1
4
– 0.2
+0.02
+0.10
4097
1025
MAX
5.50
4.25
4.75
2.00
2.25
240
280
120
140
200
1.5
2.5
0.4
0.4
0.4
25
60
70
1
5
UNITS
Cycles
Clock
ms/V
ms/V
690fe
mA
mA
mV
mV
mV
mV
sec
sec
mV
ms
ms
ms
ms
ms
ms
μA
μA
μA
μA
μA
ns
m
V
V
V
V
V
V
V
V
V
V
V
V