MAX6884ETP MAXIM [Maxim Integrated Products], MAX6884ETP Datasheet - Page 31

• Manufacturer Part Number: MAX6884ETP
• Description: EEPROM-Programmable, Hex Power-Supply Supervisory Circuits
• Manufacturer: MAXIM [Maxim Integrated Products]

For better noise immunity, bypass each of the voltage-
detector inputs to GND with a 0.1µF capacitor installed
as close to the device as possible. Bypass V
DBP to GND with 1µF capacitors installed as close to
the device as possible. V
plied) and DBP are internally generated voltages and
should not be used to supply power to external circuitry.
3.3V ALWAYS ON
12V
______________________________________________________________________________________
DC-DC
CC
1
DBP
MARGIN
V
Layout and Bypassing
CC
IN1
(when not externally sup-
Power-Supply Supervisory Circuits
DC-DC
*AUXIN
2
IN2
SENSOR
TEMP
DC-DC
3
EEPROM-Programmable, Hex
IN3
CC
MAX6884
MAX6885
DC-DC
4
*REFIN
and
IN4
DC-DC
5
A delay of less than 5µs occurs between writing to the
configuration registers and the time when these
changes actually take place, except when changing
one of the voltage-detector thresholds. Changing a
voltage-detector threshold typically takes 150µs. When
changing EEPROM contents, a software reboot or
cycling of power is required for these changes to trans-
fer to volatile memory.
IN5
A0
DC-DC
6
GND
IN6
RESET
UV/OV
SCL
WDO
SDA
WDI
MR
Typical Operating Circuit
R
Configuration Latency Period
PU
R
PU
SDA
SCL
RESET
LOGIC OUTPUT
LOGIC INPUT
LOGIC INPUT
*MAX6884 ONLY
µP
12V
5V
3.3V
2.5V
1.8V
1.5V
1.2V
31