MAX6439–MAX6442
Low-Power, Single-/Dual-Level Battery Monitors
with Hysteresis and Integrated µP Reset
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
BATT
= 1.2V to 5.5V, V
CC
= 1.2V to 5.5V, T
A
= -40°C to +85°C, unless otherwise specified. Typical values are at T
A
= +25°C.) (Note1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
LBO, LBOL, LBOH, LBOLH
Timeout Period
t
LBOP
V
BATT
rising above threshold 150 225 300 ms
LBO, LBOL, LBOH, LBOLH
Delay Time
t
LBOD
V
BATT
falling below threshold 100 µs
(V
BATT
or V
CC
) ≥ 1.2V, I
SINK
= 50µA,
asserted low
0.3
(V
BATT
or V
CC
) ≥ 1.6V, I
SINK
= 100µA,
asserted low
0.3
(V
BATT
or V
CC
) ≥ 2.7V, I
SINK
= 1.2mA,
asserted low
0.3
LBO, LBOL, LBOH, LBOLH
Output Low
(Open Drain)
V
OL
(V
BATT
or V
CC
) ≥ 4.5V, I
SINK
= 3.2mA,
asserted low
0.3
V
LBO, LBOL, LBOH, LBOLH
Output Open-Drain Leakage
Current
I
LKG
Output deasserted 500 nA
MAX64_ _ _ _ _ _ T 3.000 3.075 3.150
MAX64_ _ _ _ _ _ S 2.850 2.925 3.000
MAX64_ _ _ _ _ _ R 2.550 2.625 2.700
MAX64_ _ _ _ _ _ Z 2.250 2.313 2.375
MAX64_ _ _ _ _ _ Y 2.125 2.188 2.250
MAX64_ _ _ _ _ _ W 1.620 1.665 1.710
V
CC
Reset Threshold V
TH
MAX64_ _ _ _ _ _ V 1.530 1.575 1.620
V
V
CC
Reset Hysteresis 0.3 %
V
CC
to RESET Delay
V
CC
falling at 10mV/µs from (V
TH
+ 100mV)
to (V
TH
- 100mV)
50 µs
MAX64_ _ _ _ _ _ _ D3 150 225 300
V
CC
to RESET Timeout Period t
RP
MAX64_ _ _ _ _ _ _ D7 1200 1800 2400
ms
V
IL
0.3 x V
CC
MR Input Voltage
V
IH
0.7 x V
CC
V
MR Minimum Pulse Width t
MPW
1µs
MR Glitch Rejection 100 ns
MR to RESET Delay 200 ns
MR Reset Timeout Period t
MRP
150 225 300 ms
MR Pullup Resistance MR to V
CC
750 1500 2250 Ω
MR Rising Debounce Period t
DEB
(Note 3) 150 225 300 ms
