LTC692 データシートの表示（PDF） - Linear Technology
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LTC692 Datasheet PDF : 20 Pages
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LTC692/LTC693
PRODUCT SELECTION GUIDE
LTC692
LTC693
LTC690
LTC691
LTC694
LTC695
LTC699
LTC1232
LTC1235
LTC694-3.3
LTC695-3.3
RESET
THRESHOLD WATCHDOG
PINS
(V)
TIMER
8
4.40
X
16
4.40
X
8
4.65
X
16
4.65
X
8
4.65
X
16
4.65
X
8
4.65
X
8
4.37/4.62
X
16
4.65
X
8
2.90
X
16
2.90
X
BATTERY
BACKUP
X
X
X
X
X
X
X
X
X
POWER FAIL
WARNING
X
X
X
X
X
X
CONDITIONAL
RAM WRITE PUSHBUTTON BATTERY
PROTECT
RESET
BACKUP
X
X
X
X
X
X
X
X
X
X
X
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = full operating range, VBATT = 2.8V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Battery Backup Switching
Operating Voltage Range
VCC
VBATT
VOUT Output Voltage
IOUT = 1mA
VOUT in Battery Backup Mode
Supply Current (Exclude IOUT)
IOUT = 50mA
IOUT = 250μA, VCC < VBATT
IOUT ≤ 50mA
Supply Current in Battery Backup Mode
VCC = 0V, VBATT = 2.8V
Battery Standby Current
(+ = Discharge, – = Charge)
Battery Switchover Threshold
VCC – VBATT
Battery Switchover Hysteresis
BATT ON Output Votlage (Note 4)
BATT ON Output Short-Circuit Current (Note 4)
Reset and Watchdog Timer
Reset Voltage Threshold
Reset Threshold Hysteresis
Reset Active Time
(Note 5)
5.5V > VCC > VBATT + 0.2V
Power Up
Power Down
ISINK = 3.2mA
BATT ON = VOUT, Sink Current
BATT ON = 0V, Source Current
OSC SEL High, VCC = 5V
4.50
5.50
V
2.00
4.00
V
VCC – 0.05 VCC – 0.005
V
l VCC – 0.10 VCC – 0.005
V
VCC – 0.50 VCC – 0.250
V
VBATT – 0.1 VBATT – 0.02
V
0.6
1.5
mA
l
0.6
2.5
mA
0.04
1
μA
l
0.04
5
μA
–0.1
l
–1.0
0.02
μA
0.10
μA
70
mV
50
mV
20
mV
0.4
V
35
mA
0.5
1
25
μA
l
4.25
4.40
4.50
V
40
mV
160
200
240
ms
l
140
200
280
ms
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