EEPROM-Programmable, Hex/Quad,
Power-Supply Sequencers/Supervisors
Functional Diagram
IN1
IN2
IN3
IN4
IN5
(N.C.)
IN6
(N.C.)
DBP
1µF
ABP
1µF
IN_ DETECTOR
IN3–IN6
(IN3–IN4)
MUX
ABP
VABP + 5V
CHARGE PUMP* P1**
PO_
OUTPUT
*PO1–PO4 ONLY
(PO1, PO2)
** PO5–PO8 ONLY
(PO3, PO4, PO5)
10kΩ OPEN-
DRAIN
MUX
PO1
1.25V
VREF
IN2 DETECTOR
IN3 DETECTOR
IN4 DETECTOR
IN5 DETECTOR
IN6 DETECTOR
2.55V
LDO
5.4V
LDO
(VIRTUAL
DIODES)
PROGRAMMABLE
ARRAY
TIMING BLOCK 1
TIMING BLOCK 2
TIMING BLOCK 3
TIMING BLOCK 4
TIMING BLOCK 5
TIMING BLOCK 6
TIMING BLOCK 7
TIMING BLOCK 8
PO2 OUTPUT
PO3 OUTPUT
PO4 OUTPUT
PO5 OUTPUT
PO6 OUTPUT
PO7 OUTPUT
PO8 OUTPUT
MAIN
OSCILLATOR
MAX6872
MAX6873
EEPROM
CHARGE PUMP
CONFIG CONFIG
REGISTERS EEPROM
USER
EEPROM
PO2
PO3
PO4
PO5
PO6
(N.C.)
PO7
(N.C.)
PO8
(N.C.)
SDA
SERIAL
SCL
INTERFACE
A0
A1
( ) ARE FOR MAX6873 ONLY.
GND
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