Overvoltage Protection Controllers
with Reverse Polarity Protection
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= +5V (MAX4864L/MAX4865L/MAX4866L), V
IN
= +4V (MAX4867), T
A
= -40°C to +85°C, C
GATEN
= 500pF, unless otherwise
noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
EN
Input Leakage Current
TIMING
Startup Delay
FLAG Blanking Time
GATEN Turn-On Time
t
START
t
BLANK
t
GON
V
IN
> UVLO to V
GATEN
> 0.3V, Figure 1
V
GATEN
> 0.3V to V
FLAG
< 0.3V, Figure 1
C
GATEN
= 500pF, V
GATEN
= 0.3V to +8V
(MAX4864L/MAX4865L/MAX4866L)
V
GATEN
= 0.3V to +7V (MAX4867), Figure 1
V
IN
rising at 3V/µs from +5V to +8V
(MAX4864L/MAX4865L/MAX4866L),
or from +4V to +7V (MAX4867)
V
GATEN
= 0.3V, C
GATEN
= 500pF, Figure 2
V
IN
rising at 3V/µs from 5V to 8V
(MAX4864L/MAX4865L/MAX4866L),
or from +4V to +7V (MAX4867), V
FLAG
= 0.3V,
Figure 2
V
IN
rising at 3V/µs from 0V to +9V, time from
V
IN
= 5V to I
GATEN
= 80% of I
PD
(GATEN pulldown
current), Figure 3
20
20
50
50
10
80
80
ms
ms
ms
SYMBOL
I
LKG
CONDITIONS
EN
= GND or +5.5V
MIN
TYP
MAX
1
UNITS
µA
MAX4864L/MAX4865L/MAX4866L/MAX4867
GATEN Turn-Off Time
t
GOFF
7
20
µs
FLAG Assertion Delay
t
FLAG
3.5
µs
Initial Overvoltage Fault Delay
t
OVP
1.5
µs
Disable Time
t
DIS
V
EN
= +2.4V, V
GATEN
= 0.3V, Figure 4
2
µs
Note 1:
All parts are 100% tested at +25°C. Electrical limits across the full temperature range are guaranteed by design and correlation.
+5V
V
IN
V
UVLO
t
GON
+8V (+7V)*
t
START
V
GATEN
+0.3V
V
GATEN
+0.3V
V
IN
+5V
t
GOFF
V
OVLO
t
FLAG
V
FLAG
*MAX4867
t
BLANK
+0.3V
V
FLAG
+0.3V
Figure 1. Startup Timing Diagram
Figure 2. Shutdown Timing Diagram
V
IN
0V
V
OVLO
t
OVP
80%
V
EN
+2.4V
t
DIS
I
GATEN
V
GATEN
+0.3V
Figure 3. Power-Up Overvoltage Timing Diagram
Figure 4. Disable Timing Diagram
3
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
