MAX6876 データシートの表示（PDF） - Maxim Integrated

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MAX6876

EEPROM-Programmable, Quad, Power-Supply Tracker/Sequencer Circuit

Maxim Integrated 

EEPROM-Programmable, Quad,

Power-Supply Tracker/Sequencer Circuit

Timing Diagrams (continued)

VTRKEN

BUS VOLTAGE MONITORED THROUGH TRKEN INPUT

GND

IN1 = 2.5V

IN2 = 1.8V

IN3 = 0.9V

IN4 = 0.7V

MONITORED THROUGH SET THRESHOLDS ON IN_ INPUTS

GND

(EEPROM-SELECTABLE)

EEPROM-

SELECTED

SLEW RATE

OUT1 = 2.5V

OUT2 = 1.8V

OUT3 = 0.9V

OUT4 = 0.7V

GND

GND

RESET

GATE

tRESET

Figure 3. Voltage Tracking with Forced Shutdown (IN1 UV Failure)

VTRKEN

EEPROM-

SELECTED

SLEW RATE

(FORCED INTO

QUICK SHUTDOWN

WHEN IN1 FAILS)

ENABLE

SYNCH

OUT1 = 4V

OUT2 = 3V

OUT3 = 2V

OUT4 = 1V

FULL TRK

MIX WITH 2 RAMP

FULL SEQ

MIX WITH 3 RAMP

(FAST SHUTDOWN BIT SET)

Figure 4. Sequencing Ramp Down Diagram

Figure 5. Mixed-Mode Tracking/Sequencing Examples

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