MAX4838 Maxim, MAX4838 Datasheet - Page 3

• Manufacturer Part Number: MAX4838
• Description: Overvoltage Protection Controllers with Status FLAG
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(V
Note 1: All parts are 100% tested at +25°C. Electrical limits across the full temperature range are guaranteed by design and
(V
TIMING
Startup Delay
FLAG Blanking Time
GATE Turn-On Time
GATE Turn-Off Time
FLAG Assertion Delay
Initial Overvoltage Fault Delay
Disable Time
IN
IN
600
500
400
300
200
100
= +5V, T
0
= +5V, MAX4838; Si9936DY external MOSFET in back-to-back configuration; T
0
SUPPLY CURRENT vs. INPUT VOLTAGE
correlation.
PARAMETER
5
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
INPUT VOLTAGE (V)
10
_______________________________________________________________________________________
Overvoltage Protection Controllers with
15
20
25
SYMBOL
t
30
t
BLANK
t
t
START
t
GOFF
t
FLAG
GON
t
OVP
DIS
1000
100
V
V
V
Figure 1
V
V
V
V
V
I
V
MAX4838/MAX4840, Figure 4
0.1
10
GATE
1
IN
GATE
GATE
IN
GATE
IN
FLAG
IN
EN
3.5
> V
increasing from 5V to 8V at 3V/µs,
increasing from 5V to 8V at 3V/µs,
increasing from 0 to 8V,
= 2.4V, V
= 80% of I
= 0.4V, Figure 2
= 0.3V,V
= 0.3V to 8V, C
= 0.3V, C
UVLO
vs. OUTPUT VOLTAGE
4.0
REVERSE CURRENT
BACK-TO-BACK MOSFETS
, V
OUTPUT VOLTAGE (V)
GATE
CONDITIONS
GATE
FLAG
SINGLE MOSFET
GATE
PD
, Figure 3
4.5
= 0.3V,
> 0.3V, Figure 1
= 2.4V, Figure 1
Typical Operating Characteristics
= 1500pF, Figure 2
GATE
5.0
= 1500pF,
A
= +25°C.) (Note 1)
A
5.5
= +25°C, unless otherwise noted.)
12
9
6
3
0
MIN
Status FLAG
20
20
3
GATE VOLTAGE vs. INPUT VOLTAGE
4
TYP
100
580
7.0
5.8
50
50
6
MAX4840
MAX4841
INPUT VOLTAGE (V)
5
MAX
80
80
20
6
MAX4838
MAX4839
UNITS
7
ms
ms
ms
µs
µs
ns
ns
3
8