Datasheet

(V
CC
= 4.75V to 5.5V for MAX690A/MAX802L/MAX805L, V
CC
= 4.5V to 5.5V for MAX692A/MAX802M, V
BATT
= 2.8V, T
A
= T
MIN
to
T
MAX
, unless otherwise noted.)
Note 2: Either V
CC
or V
BATT
can go to 0V, if the other is greater than 2.0V.
Note 3: “-” = battery-charging current, “+” = battery-discharging current.
Note 4: WDI is guaranteed to be in an intermediate, non-logic level state if WDI is floating and V
CC
is in the operating voltage
range. WDI is internally biased to 35% of V
CC
with an input impedance of 50kΩ.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
RESET Output Voltage
I
SOURCE
= 800μA
V
I
SINK
= 3.2mA 0.4
MAX69_AC, MAX802_C, V
CC
= 1.0V
I
SINK
= 50μA
0.3
MAX69_AE/M, MAX802_E,
V
CC
= 1.2V, I
SINK
= 100μA
0.3
RESET Output Voltage
MAX805LC, I
SOURCE
= 4μA, V
CC
= 1.1V 0.8
V
MAX805LE/M, I
SOURCE
= 4μA, V
CC
= 1.2V 0.9
MAX805L, I
SOURCE
= 800μA V
CC
- 1.5
MAX805L, I
SINK
= 3.2mA 0.4
Watchdog Timeout t
WD
1.00 1.60 2.25 s
WDI Pulse Width t
WP
V
IL
= 0.4V, V
IH
= (0.8) (V
CC
) 50 ns
WDI Input Threshold (Note 4) V
CC
= 5V
Logic low 0.8
V
Logic high 3.5
WDI Input Current
WDI = V
CC
50 150
µA
WDI = 0V -150 -50
PFI Input Threshold
MAX69_A, MAX805L, V
CC
= 5V 1.20 1.25 1.30
V
MAX802_C/E, V
CC
= 5V 1.225 1.250 1.275
PFI Input Current -25 0.01 25 nA
PFO Output Voltage
I
SOURCE
= 800μA V
CC
- 1.5
V
I
SINK
= 3.2mA 0.4
MAX690A/MAX692A/
MAX802L/MAX802M/
MAX805L
Microprocessor Supervisory Circuits
www.maximintegrated.com
Maxim Integrated │ 3
Electrical Characteristics (continued)