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ISL6121HEVAL1 Fiches technique(PDF) 8 Page - Intersil Corporation

No de pièce ISL6121HEVAL1
Description  Single Supply Integrated Current Limiting Controller
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Fabricant  INTERSIL [Intersil Corporation]
Site Internet  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL6121HEVAL1 Fiches technique(HTML) 8 Page - Intersil Corporation

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8
FN9005.4
June 10, 2005
Using the ISL612XSEQEVAL1 Platform
The ISL612XSEQEVAL1 platform is the primary evaluation
board for this family. The board has 2 complete, separate
and electrically identical circuits, see Figure 15 for schematic
and Figure 16 for a photo.
In the top right hand corner of the board is a SMD layout with
a ISL6123 illustrating the full functionality and small
implementation size for an application having the highest
component count.
The majority of the board is given over to a socket and
discrete through-hole components circuit for ease of
evaluation flexibility through IC variant swapping and
modification of UVLO levels and sequencing order by
passive component substitution.
The board is shipped with the ISL6123 installed in both
locations and with two each of the other released variant
types loose packed. As this sequencer family has a common
function pinout there are no major modifications to the board
necessary to evaluate the other ICs. The ISL6125 due to its
having open drain outputs can be evaluated on the
ISL612XSEQEVAL1 with a minor modification or on the
ISL613XSUPEREVAL2 evaluation platform. To modify for
ISL6125 evaluation, pull-up resistors must be added from
the GATE outputs to a pull-up voltage of 1.5V to prevent FET
turn-on or remove FETs to eliminate this voltage restriction.
To the left, right and above the socket are four test point
strips (TP1-TP4). These give access to the labeled IC I/O
pins during evaluation. Remember that significant current or
capacitive loading of particular I/O pins will affect
functionality and performance.
Attention to orientation and placement of variant ICs in the
socket must be paid to prevent IC damage or faulty
evaluation.
The default configuration of the ISL612XSEQEVAL1
circuitries was built around the following design
assumptions:
Typical Performance Curves
FIGURE 4. UVLO THRESHOLD VOLTAGE
FIGURE 5. DLY CHARGE CURRENT
FIGURE 6. SYSRST# LOW TO OUTPUT LATCH OFF
634
633
632
631
628
626
TEMPERATURE (°C)
627
-40
0
20
60
-20
40
80
100
630
629
VDD = 5V
VDD = 1.5V
-40
0
20
60
-20
40
80
100
TEMPERATURE (
°C)
1.03
1.02
0.97
0.98
0.99
1.00
1.01
1.04
DLY_OFF/ON
VDD = +5V
VDD = 1.5V
1
µs/DIV
5VOUT
GATE
SYSRST#
2V/DIV
3.3VOUT
ISL6123, ISL6124, ISL6125, ISL6126, ISL6127, ISL6128


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