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LTC694CS8PBF 数据表(PDF) 4 Page - Linear Technology

部件名 LTC694CS8PBF
功能描述  Microprocessor Supervisory Circuits
PDF  18 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC694CS8PBF 数据表(HTML) 4 Page - Linear Technology

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



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