Pin description (continued) – Rainbow Electronics MAX4880 User Manual
Page 6
MAX4880
Overvoltage-Protection Controller with
Internal Disconnect Switch
6
_______________________________________________________________________________________
Pin Description (continued)
PIN
NAME
FUNCTION
10
FLAGV
Active-Low, Open-Drain-Fault Flag Output.
FLAGV goes low when either an overvoltage or undervoltage
fault occurs at IN.
FLAGV is disabled when EN goes high. During startup, FLAGV has a delay of 50ms
after V
GATE
> 0.3V, before being initially driven high.
—
EP
Exposed Pad. EP is internally connected to GND. Do not use EP as the only electrical ground connection.
V
IN
V
GATE
1.2V
V
UVLO
0.3V
t
START
2.4V
t
DELAY
8V
t
GON
5V
V
FLAGV
Figure 1. Startup Timing Diagram
V
IN
V
GATE
V
OVLO
0.3V
t
GOFF
0.4V
t
FLAG
5V
8V
V
FLAGV
Figure 2. Overvoltage Fault Timing Diagram
V
IN
I
GATE
V
OVLO
80%
t
OVP
0V
Figure 3. Power-Up Overvoltage Timing Diagram
V
GATE
0.3V
t
DIS
2.4V
V
EN
Figure 4. Disable Timing Diagram