MAX4838EXT-T Ver la hoja de datos (PDF) - Maxim Integrated
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MAX4838EXT-T Datasheet PDF : 10 Pages
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Overvoltage Protection Controllers with
Status FLAG
ELECTRICAL CHARACTERISTICS (continued)
(VIN = +5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
TIMING
Startup Delay
FLAG Blanking Time
GATE Turn-On Time
SYMBOL
CONDITIONS
tSTART
tBLANK
tGON
VIN > VUVLO, VGATE > 0.3V, Figure 1
VGATE = 0.3V,VFLAG = 2.4V, Figure 1
VGATE = 0.3V to 8V, CGATE = 1500pF,
Figure 1
MIN TYP MAX UNITS
20
50
80
ms
20
50
80
ms
7.0
ms
GATE Turn-Off Time
FLAG Assertion Delay
tGOFF
tFLAG
VIN increasing from 5V to 8V at 3V/µs,
VGATE = 0.3V, CGATE = 1500pF, Figure 2
VIN increasing from 5V to 8V at 3V/µs,
VFLAG = 0.4V, Figure 2
6
20
µs
5.8
µs
Initial Overvoltage Fault Delay
tOVP
VIN increasing from 0 to 8V,
IGATE = 80% of IPD, Figure 3
100
ns
Disable Time
tDIS
VEN = 2.4V, VGATE = 0.3V,
MAX4838/MAX4840, Figure 4
580
ns
Note 1: All parts are 100% tested at +25°C. Electrical limits across the full temperature range are guaranteed by design and
correlation.
Typical Operating Characteristics
(VIN = +5V, MAX4838; Si9936DY external MOSFET in back-to-back configuration; TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. INPUT VOLTAGE
600
500
400
300
200
100
0
0 5 10 15 20 25 30
INPUT VOLTAGE (V)
REVERSE CURRENT
vs. OUTPUT VOLTAGE
1000
SINGLE MOSFET
100
10
1
BACK-TO-BACK MOSFETS
0.1
3.5
4.0
4.5
5.0
5.5
OUTPUT VOLTAGE (V)
GATE VOLTAGE vs. INPUT VOLTAGE
12
9
6
MAX4840
MAX4841
MAX4838
MAX4839
3
0
3
4
5
6
7
8
INPUT VOLTAGE (V)
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