FST8145SM Maxim Integrated Products, FST8145SM Datasheet - Page 7

• Manufacturer Part Number: FST8145SM
• Description: 80 Amp Rectifier 20 to 100 Volts Schottky Barrier
• Manufacturer: Maxim Integrated Products

Figure 1. RESET IN Configuration
* The MAX6390 has a 1120ms or 1200ms RESET timeout and a
140ms or 150ms manual reset timeout
a negative-going pulse applied to V
actual reset threshold and ending below it by the magni-
tude indicated (reset comparator overdrive). The graph
indicates the typical maximum pulse width a negative-
going V
pulse to be issued. As the magnitude of the transient
increases (goes farther below the reset threshold), the
maximum allowable pulse width decreases. A 0.1µF
capacitor mounted as close as possible to V
additional transient immunity.
The MAX6381–MAX6390 are guaranteed to operate
properly down to V
valid reset levels down to V
active-low outputs (push/pull only,
pullup resistor to active-high outputs (push/pull only) will
ensure that the reset line is valid while the reset output
can no longer sink or source current. This scheme does
V
R1
R2
MAX6390XSD4
MAX6390XSD7
IN
CC
SUFFIX
transient may have without causing a reset
D1
D2
D3
D5
D6
D4
D7
_______________________________________________________________________________________
CC
RESET IN
Reset Timeout Delay
= 1V. In applications that require
Output Down to V
Ensuring a Valid RESET
CC
MAX6387
MAX6388
MAX6389
V
GND
CC
= 0, a pulldown resistor to
CC
1120/140ms *
1200/150ms *
(RESET)
RESET
1120ms
1200ms
, starting above the
( ) IS FOR MAX6388
140ms
280ms
560ms
20ms
1ms
Figure 2) and a
MIN
SC70, Single/Dual Low-Voltage,
CC
Low-Power µP Reset Circuits
provides
CC
= 0
Figure 2. RESET Valid to V
not work with the open-drain outputs of the
MAX6383/MAX6386/MAX6389/MAX6390. The resistor
value used is not critical, but it must be small enough
not to load the reset output when V
threshold. For most applications, 100kΩ is adequate.
MAX6390
MAX638_
PART
THRESHOLD
RESET
CC
MAX6381
MAX6384
MAX6387
46
44
31
29
26
23
22
17
16
46
44
31
29
26
23
22
17
16
V
GND
= Ground Circuit
Standard Versions
CC
RESET
CC
RESET TIMEOUT
is above the reset
D3
D4
100k
R1
7