Rainbow Electronics MAX6871 - Manual (Page 49)

MAX6870/MAX6871
EEPROM-Programmable Hex/Quad
Power-Supply Sequencers/Supervisors with ADC
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MAX6870
DC-DC
1
DBP
PO1 IN1
DC-DC
2
IN3 PO2
DC-DC
3
IN4 PO3
GND
IN5 PO5 IN6 PO4 IN2
SDA SDA
+5V SWITCHED
+0.7V
+2.5V
+3.3V
+5V
+12V
µP
SCL SCL
PO6 RESET
PO7 NMI, OV ALERT
PO8
A0
NMI, WD ALERT
GPI1
(WDI)
LOGIC OUTPUT
R PU R PU
DC-DC
4
TEMP
SENSOR
+12V SUPPLY
PO1
PO2
PO3
+12V BUS INPUT
t PO1 ENABLE +5V DC-DC CONVERTER
A1
GPI2 GPI4 GPI3 AUXIN1 REFIN AUXIN2
ABP
MARGIN
MR
+12V
+5V SUPPLY
+5V OUTPUT
t PO2 ENABLE +2.5V DC-DC CONVERTER
+2.5V SUPPLY
+2.5V OUTPUT
t PO3 ENABLE +3.3V DC-DC CONVERTER
+3.3V SUPPLY
PO5
PO4
PO6
+3.3V OUTPUT
t
PO5 ENABLE +0.7V DC-DC CONVERTER
+0.7V SUPPLY +0.7V OUTPUT
t PO4 ENABLE +5V FET SWITCH
+5V SUPPLY
+5V SWITCHED OUTPUT
t PO6
SYSTEM RESET
Typical Operating Circuit