MAX69_AC_ _/MAX800_C_ _............................0°C to +70°C
MAX69_AE_ _/MAX800_E_ _.........................-40°C to +85°C
MAX69_AMJE................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
(MAX691A, MAX800L: V
CC
= +4.75V to +5.5V; MAX693A, MAX800M: V
CC
= +4.5V to +5.5V; V
VBATT
= 2.8V, T
A
= T
MIN
to T
MAX
,
unless otherwise noted.
PARAMETER
Operating Voltage Range,
V
CC
, V
VBATT
(Note 1)
I
OUT
= 25mA
MAX69_AC
V
OUT
Output
V
CC
= 4.5V
I
OUT
= 250mA
MAX69_AE,
MAX800_C/E
MAX69_A/M
I
OUT
= 210mA
MAX69_AC/AE,
MAX800_C/E
V
CC
-
0.17
0.8
0.8
0.8
V
VBATT
- 0.3
V
VBATT
- 0.25
V
VBATT
- 0.15
15
25
30
30
T
A
= +25°C
T
A
= T
MIN
+ T
MIN
T
A
= +25°C
-0.1
-1.0
V
VBATT
+ 0.3
V
VBATT
- 0.3
T
A
= T
MIN
+ T
MIN
0.04
100
1
5
0.02
0.02
µA
Ω
CONDITIONS
MIN
0
V
CC
- 0.02
V
CC
- 0.2
V
CC
- 0.2
TYP
MAX
5.5
V
CC
- 0.05
V
CC
- 0.3
V
CC
-
0.35
V
CC
- 0.40
V
CC
-
0.3V
1.2
1.4
1.6
V
Ω
V
UNITS
V
MAX69_AC, MAX800_C
V
CC
-to-V
OUT
On-Resistance
V
CC
= 4.5V
MAX69_AE, MAX800_E
MAX69_A/M
V
OUT
in Battery-Backup
Mode
VBATT-to-V
OUT
On-Resistance
Supply Current in Normal
Operating Mode (excludes
I
OUT
)
Supply Current in Battery-
Backup Mode (excludes
I
OUT
) (Note 2)
VBATT Standby Current
(Note 3)
Battery Switchover
Threshold
V
VBATT
= 4.5V, I
OUT
= 20mA
V
VBATT
= 2.8V, I
OUT
= 10mA
V
VBATT
= 2.0V, I
OUT
= 5mA
V
VBATT
= 4.5V
V
VBATT
= 2.8V
V
VBATT
= 2.0V
V
CC
> V
VBATT
- 1V
V
CC
< V
VBATT
-
1.2V, V
VBATT
=
2.8V
V
VBATT
+ 0.2V ≤
VCC
Power-up
Power-down
µA
µA
V
www.maximintegrated.com
Maxim Integrated │ 2
MAX691A/MAX693A/
MAX800L/MAX800M
Electrical Characteristics (continued)
Microprocessor Supervisory Circuits
(MAX691A, MAX800L: V
CC
= +4.75V to +5.5V; MAX693A, MAX800M: V
CC
= +4.5V to +5.5V; V
VBATT
= 2.8V, T
A
= T
MIN
to T
MAX
,
unless otherwise noted.
PARAMETER
Battery Switchover
Hysteresis
BATT ON Output Low
Voltage
BATT ON Output
Short-Circuit Current
I
SINK
= 3.2mA
I
SINK
= 25mA
Sink current
CONDITIONS
MIN
TYP
60
0.1
0.7
60
1
4.50
4.25
4.55
4.30
15
Power-down
Power-up
Power-up
Long period
Short period
Long period
Short period
V
IL
= 0.8V, V
IH
= 0.75 x V
CC
I
SINK
= 50μA, V
CC
= 1V, VBATT = 0V, V
CC
falling
RESET
Output Voltage
RESET
Output
Short-Circuit Current
RESET Output Voltage Low
(Note 5)
LOW LINE
Output Voltage
LOW LINE
Output
Short-Circuit Current
WDO
Output Voltage
WDO
Output
Short-Circuit Current
WDI Threshold Voltage
(Note 6)
WDI Input Current
I
SINK
= 3.2mA, V
CC
= 4.25V
I
SOURCE
= 1.6mA, V
CC
= 5V
Output source current
I
SINK
= 3.2mA
I
SINK
= 3.2mA, V
CC
= 4.25V
I
SOURCE
= 1μA, V
CC
= 5V
Output source current
I
SINK
= 3.2mA
I
SOURCE
= 500μA, V
CC
= 5V
Output source current
V
IH
V
IL
WDI = 0V
WDI = V
OUT
-50
-10
20
50
0.75 x V
CC
0.8
3.5
1
3.5
3
10
mA
V
µA
15
100
0.4
0.1
3.5
7
0.4
0.4
20
mA
V
V
µA
100
0.004
0.1
0.3
0.4
V
1.0
70
140
80
800
200
2048
1.6
100
4096
1024
2.25
140
280
15
4.65
4.40
0.4
1.5
100
100
4.75
4.50
4.70
4.45
mV
µs
ns
ms
Clock
Cycles
sec
ms
Clock
Cycles
ns
V
MAX
UNITS
mV
V
mA
µA
Source current
MAX691A, MAX800L
RESET AND WATCHDOG TIMER
MAX693A, MAX800M
MAX800L, T
A
= +25°C, V
CC
falling
MAX800M, T
A
= +25°C, V
CC
falling
Reset Threshold Hysteresis
V
CC
to RESET Delay
LOW LINE-to-RESET
Delay
Reset Active Timeout Period,
Internal Oscillator
Reset Active Timeout Period,
External Clock (Note 4)
Watchdog Timeout Period,
Internal Oscillator
Watchdog Timeout Period,
External Clock (Note 4)
Minimum Watchdog Input
Pulse Width
Reset Threshold Voltage
www.maximintegrated.com
Maxim Integrated │
3
MAX691A/MAX693A/
MAX800L/MAX800M
Electrical Characteristics (continued)
Microprocessor Supervisory Circuits
(MAX691A, MAX800L: V
CC
= +4.75V to +5.5V; MAX693A, MAX800M: V
CC
= +4.5V to +5.5V; V
VBATT
= 2.8V, T
A
= T
MIN
to T
MAX
,
unless otherwise noted.
PARAMETER
POWER-FAIL COMPARATOR
PFI Input Threshold
PFI Leakage Current
PFO
Output Voltage
PFO
Output Short-Circuit
Current
PFI-to-PFO Delay
CHIP-ENABLE GATING
CE
IN Leakage Current
CE
IN-to-
CE
OUT
Resistance (Note 7)
CE
OUT Short-Circuit
Current (Reset Active)
CE
IN-to-
CE
OUT
Propagation Delay (Note 8)
CE
OUT Output-Voltage
High (Reset Active)
RESET-to-CE OUT Delay
INTERNAL OSCILLATOR
OSC IN Leakage Current
OSC IN Input Pullup Current
OSC SEL Input Pullup
Current
OSC IN Frequency Range
OSC IN External Oscillator
Threshold Voltage
OSC IN Frequency with
External Capacitor
OSC SEL = 0V
OSC SEL = V
OUT
or floating, OSC IN = 0V
OSC SEL = 0V
OSC SEL = 0V
V
IH
V
IL
OSC SEL = 0V, COSC = 47pF
V
OUT
-
0.3
0.10
10
10
50
V
OUT
-
0.6
3.65
100
±5
100
100
µA
μA
μA
kHz
2.00
V
kHz
Disable mode
Enable mode
Disable mode,
CE
OUT = 0V
50Ω source impedance driver, C
LOAD
= 50pF
V
CC
= 5V, I
OUT
= -100μA
Power-down
3.5
2.7
12
V
CC
= 0V, VBATT = 2.8V, I
OUT
= 1μA
0.1
±0.005
75
0.75
6
±1
150
2.0
10
μA
Ω
mA
ns
V
µs
I
SINK
= 3.2mA
I
SOURCE
= 1μA, V
CC
= 5V
Output source current
V
IN
= -20mV, V
OD
= 15mV
V
IN
= 20mV, V
OD
= 15mV
3.5
1
15
25
60
100
MAX69_AC/AE/AM, V
CC
= 5V
MAX800_C/E, V
CC
= 5V
1.2
1.225
1.25
1.25
±0.01
1.3
1.275
±25
0.4
V
nA
V
µA
µs
CONDITIONS
MIN
TYP
MAX
UNITS
Note 1:
Either V
CC
or VBATT can go to 0V, if the other is greater than 2.0V.
Note 2:
The supply current drawn by the MAX691A/MAX800L/MAX800M from the battery excluding I
OUT
typically goes to 10μA
when (VBATT - 1V) < V
CC
< VBATT. In most applications, this is a brief period as V
1 Introduction
In the mid-1960s, American scientist Maas conducted extensive experimental research on the charging process of open-cell batteries and proposed an acceptable charging curve for ...[详细]
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