MAX6880 データシートの表示（PDF） - Maxim Integrated
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MAX6880 Datasheet PDF : 19 Pages
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Dual-/Triple-Voltage, Power-Supply
Sequencers/Supervisors
125mV DOWN =
STOP RAMP THRESHOLD
REFERENCE RAMP
250mV UP =
FAULT THRESHOLD
250mV DOWN =
FAULT THRESHOLD
250mV UP =
FAULT THRESHOLD
250mV DOWN =
FAULT THRESHOLD
125mV UP =
STOP RAMP THRESHOLD
REFERENCE RAMP
POWER-UP
Figure 1. Stop Ramp/Fault Window During Power-Up and Power-Down
POWER-DOWN
EN/UV
VEN_R
IN_
OUT_
BUS VOLTAGE MONITORED THROUGH EN/UV INPUT
IN1 = 3.3V
IN2 = 1.8V
IN3 = 0.7V
MONITORED THROUGH SET THRESHOLDS ON SET_ INPUTS
CAPACITOR-
ADJUSTED
SLEW RATE
OUT1 = 3.3V
OUT2 = 1.8V
OUT3 = 0.7V
EN/UV
VEN_F
PG/RST
tDELAY
tDELAY
tDELAY
tTIMEOUT
Figure 2. Sequencing In Normal Mode
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