MAX6887BETE-T Maxim Integrated, MAX6887BETE-T Datasheet - Page 11

• Manufacturer Part Number: MAX6887BETE-T
• Description: Supervisory Circuits
• Manufacturer: Maxim Integrated
• Series: MAX6887, MAX6888r

Specifications of MAX6887BETE-T

• Number Of Voltages Monitored: 6
• Undervoltage Threshold: 4.62 V, 3.06 V, 2.31 V, 0.557 V, 0.557 V, 0.557 V
• Overvoltage Threshold: 5.36 V, 3.54 V, 2.68 V, 0.643 V, 0.643 V, 0.643 V
• Manual Reset: Resettable
• Watchdog: Watchdog
• Supply Voltage - Max: 5.8 V
• Maximum Operating Temperature: + 85 C
• Package / Case: TQFN EP
• Maximum Power Dissipation: 1667 mW
• Minimum Operating Temperature: - 40 C
• Supply Current (typ): 900 uA
• Supply Voltage - Min: 2.7 V

At power-up, WDO goes high after t
The initial watchdog timeout period (t
diately after WDO is high. The initial watchdog timeout
period allows the µP to perform its initialization process.
A normal watchdog timeout period (t
ever WDI transitions from high to low after the initial
watchdog timeout period occurs. WDI monitors the tog-
gling output of the µP, indicating normal processor
behavior. If WDI does not toggle during the normal
watchdog timeout period (t
processor has stopped operating or is stuck in an infinite
execution loop, WDO goes low. WDO stays low until the
next transition on WDI. An initial watchdog timeout peri-
od (t
If WDO is connected to MR, the WDO will assert for a
short duration (~5µs), long enough to assert the RESET
output. Asserting RESET clears the watchdog timer and
WDO goes high. The reset output will remain asserted
for its timeout period after a watchdog fault. The watch-
dog timer stays cleared as long as RESET is low.
For better noise immunity, bypass each of the voltage-
detector inputs to GND with 0.1µF capacitors installed
as close to the device as possible. Bypass V
to GND with 1µF capacitors installed as close to the
device as possible. V
and BP are internally generated voltages and should
not be used to supply power to external circuitry.
PROCESS: BiCMOS
WDI
Hex/Quad, Power-Supply Supervisory Circuits
) starts when WDO goes high.
Applications Information
______________________________________________________________________________________
CC
(when not externally supplied)
Layout and Bypassing
Chip Information
WD
), indicating that the
D-PO
WDI
WD
) applies when-
) applies imme-
(see Figure 3).
CC
and BP
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages. Note that a "+", "#", or "-" in
the package code indicates RoHS status only. Package draw-
ings may show a different suffix character, but the drawing per-
tains to the package regardless of RoHS status.
* See thresholds options tables (Tables 1 and 2) for actual under-
voltage and overvoltage thresholds.
MAX6888AETE
MAX6888BETE
MAX6888CETE
MAX6888DETE
MAX6888EETE
MAX6888FETE
MAX6888GETE
MAX6888HETE
MAX6888QETE
MAX6888IETE
MAX6888JETE
MAX6888KETE
MAX6888LETE
MAX6888METE
MAX6888NETE
MAX6888OETE
MAX6888PETE
MAX6888RETE
PACKAGE TYPE
16-TQFN-EP
PART
Selector Guide (continued)
5.0
5.0
5.0
5.0
5.0
5.0
IN1
Adj
Adj
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
PACKAGE CODE
NOMINAL INPUT
Package Information
VOLTAGE (V)*
IN2
Adj
Adj
T1655+2
3.3
3.3
3.3
2.5
2.5
2.5
2.5
1.8
3.3
3.3
3.3
2.5
2.5
2.5
2.5
1.8
IN3
Adj
Adj
Adj
Adj
Adj
Adj
2.5
2.5
1.8
1.8
1.8
1.5
2.5
2.5
1.8
1.8
1.8
1.5
IN4
Adj
Adj
Adj
Adj
Adj
Adj
Adj
Adj
Adj
Adj
Adj
Adj
Adj
Adj
1.8
1.5
1.8
1.5
DOCUMENT NO.
21-0140
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