ISL88813 Intersil Corporation, ISL88813 Datasheet - Page 9

• Manufacturer Part Number: ISL88813
• Description: (ISL88705 - ISL88813) uP Supervisor
• Manufacturer: Intersil Corporation

Parametric Performance
FIGURE 7. V
11.0
10.5
10.0
9.50
9.00
8.50
8.00
7.50
7.00
6.50
6.00
4.70
4.65
4.60
4.55
4.50
4.45
4.40
4.36
4.30
4.25
4.20
3.2
3.1
3.0
2.9
2.8
2.7
2.6
2.5
2.4
FIGURE 8. V
-40 -30 -20 -10
-40 -30 -20 -10
-40 -30 -20 -10
FIGURE 6. I
V
V
DD
DD
TH1
TH1
= 3.3V
= 5V
ISL88705, ISL88706, ISL88707, ISL88708, 8SL88716, ISL88813
vs TEMPERATURE FOR 5V SUPPLY
vs TEMPERATURE < 5V SUPPLY
DD
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
0
V
vs TEMPERATURE
V
V
V
V
TH
10
TH
TH
9
TH
10
TH
10
= 3.09V
= 2.63V
= 4.64V
= 2.92V
= 4.38V
20
20
20
30
30
30
40
40
40
50
50
50
60
60
60
70
70
70
90
90
90
ISL88705EVAL1 and Applications
The ISL88705EVAL1 supports all six of the ISL88705-
ISL88813 devices, enabling evaluation of basic functional
operation and common application implementations.
Figures 15 and 17 illustrate the ISL88705EVAL1 in
photographic and schematic forms respectively.
The ISL88705EVAL1 is divided into two banks; each bank
having one each of the three available pinouts. The top bank
is fully populated and immediately usable whereas the
bottom bank is unpopulated. Samples of other sample
variants can be evaluated singularly or in combination with
any other variant to provide a specific voltage monitoring
solution. The left position has a ISL88705IB846Z monitoring
the V
signaling. In addition, the power fail input (PFI) is being
compared to the internal PFI voltage reference of 1.25V and
the power fail output (PFO) will report the PFI condition. This
feature can be used for monitoring an auxiliary voltage,
providing an early warning of a brownout or power failure or
presence detection in a system.
The middle position has the ISL88813IB846Z installed and is
set up as a 5V window detector with jumper J1 installed. The
V
divider. The PFO output is inverted and connected to the
manual reset input (MR) via U4. Hence a reset signal is
generated when 4.64V < V
PFO will be an OV indicator but no reset signal will be
generated. Both of these positions share a common
Watchdog input (WDI) signal although each has its own
Watchdog output (WDO).
The right position has the ISL88707IB846Z and is set up as
a +12V and +5V UV monitor with reset signal. The PFI
allows monitoring of any voltage above the 1.25V PFI
reference and with a resistor divider this is used to monitor
the 12V. The ISL88707 and ISL88708 have the unique
feature of an adjustable time to reset (t
DD
1.2530
1.2525
1.2520
1.2515
1.2510
1.2505
1.2500
monitors for UV and the PFI for OV via the R3, R4
DD
rail voltage for a minimum of 4.64V with reset
-40 -30 -20 -10
FIGURE 9. V
THPFI
TEMPERATURE (°C)
DD
0
vs TEMPERATURE
> 5.38V. With J1 removed the
10
20
30
POR
40
)signal
50
December 6, 2006
60
FN8092.3
70
90