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SP691A Datasheet, PDF (5/24 Pages) Sipex Corporation – Low Power Microprocessor Supervisory with Battery Switch-Over
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ELECTRICAL CHARACTERISTICS
V = +4.75V to +5.5V for the SP691A/800L, V = +4.5V to +5.5V for the SP693A/800M, V = +2.8V, and T = T to T unless otherwise
CC
CC
BATT
AMB
MIN
MAX
noted. Typical values apply at T =+25OC.
AMB
NOTE 1: Either VCC or VBATT can go to 0V, if the other is greater than 2.0V.
NOTE 2: The supply current drawn by the SP691A/693A/800L/800M from the battery (excluding IOUT) typically
goes to 5µA when (VBATT - 1V) < VCC < VBATT. In most applications, this is a brief period as VCC falls through this region.
NOTE 3: "+" = battery-discharging current, "-" = battery-charging current.
NOTE 4: Although presented as typical values, the number of clock cycles for the reset and watchdog timeout
periods are fixed and do not vary with process or temperature.
NOTE 5: RESET is an open-drain output and sinks current only.
NOTE 6: WDI is internally connected to a voltage divider between VOUT and GND. If unconnected, WDI is driven
to 1.6V (typ), disabling the watchdog function.
NOTE 7: The chip-enable resistance is tested with VCC = +4.75V for the SP691A/800L and VCC = +4.5V for the
SP693A/800M. CE = CE = V /2.
IN
OUT
CC
NOTE 8: The chip-enable propagation delay is measured from the 50% point at CEIN to the 50% point at CEOUT.
(TAMB = 25oC, unless otherwise noted)
TYPICAL PERFORMANCE CHARACTERISTICS
43
VCC = 5V
VBATT = 2.8V
40
37
34
31
28
25
-60 -30
0 30 60 90 120
Temperature (oC)
Figure 1. VCC Supply Current vs. Temperature (Normal
Operating Mode)
2.5
2.0
VCC = 1.6V
VBATT = 2.8V
1.5
1.0
0.5
0.0
-0.5
-60 -30
0 30 60 90 120 150
Temperature (oC)
Figure 2. Battery Supply Current vs. Temperature
(Battery-Backup Mode)
75.0
70.0
65.0
60.0
VCC = 4.75V
VBATT = 2.8V
CE IN = VCC/2
55.0
50.0
45.0
40.0
-80 -60 -40 -20 0 20 40 60 80 100 120 140
Temperature (oC)
Figure 3. Chip-Enable On-Resistance vs. Temperature
14
12
VCC = 0V
10
8
6
4
2
0
-60 -30
VBATT = 2V
VBATT = 2.8V
VBATT = 4.5V
0 30 60 90 120 150
Temperature (oC)
Figure 4. VBATT to VOUT On-Resistance vs. Temperature
Date: 4/18/05
SP691A/693A/800L/800M Low Power Microprocessor Supervisor with Battery Switch-Over © Copyright 2005 Sipex Corporation
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