ISL61862DIRZ Intersil, ISL61862DIRZ Datasheet - Page 13

• Manufacturer Part Number: ISL61862DIRZ
• Description: Hot Swap & Power Distribution SINGLE USB HOTSWAP 3A/RETRY 3X3 8LD
• Manufacturer: Intersil

Specifications of ISL61862DIRZ

• Rohs: yes
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: DFN EP

ISL61863EVAL1Z Schematic and Photo
Application Information
Using the ISL6186XEVAL1Z Platform
General and Biasing Information
There are three evaluation platforms for the ISL6186 family.
There is one for each package style, each with a different
continuous output current level and representing a mix of enable
polarity and output retry or latch options. The standard available
evaluation board options are listed at the end of the Ordering
Information table, which starts on page 3. Figure 28A illustrates
the schematic for the 10 Ld DFN ISL61863EVAL1Z. Other than
the unique PGOOD output on the ISL61863 types, all the
schematics and functions are the same across all three package
types. Consult the individual package pinouts on page 2 for those
differences.
The evaluation platform is biased and monitored through a few
labeled test points. See Table 1 for test point assignments and
descriptions.
Upon proper bias of the evaluation platform and correct enabling
of the IC, the ISL6186 will have a nominal V
that is below the continuous current rating passing through each
enabled switch. See Figures 14 to 16 for typical ISL6186 turn-on
and turn-off waveforms.
External current loading in excess of the trip current level for the
particular part being evaluated will result in the ISL6186 entering
current limiting mode. Figure 11 illustrates current limiting mode
TP NAME
NOTE: *PGD Output only available on ISL61863 types
TABLE 1. ISL61863EVAL1Z TEST POINT ASSIGNMENTS
GND
OUT
VIN
FLT
PG
EN
FIGURE 28A. ISL61863EVAL1Z SCHEMATIC
Eval Board and IC Gnd
Eval Board, IC Bias and Power Input
Enable Switch
Switch Power Output
Power-Good Output
Fault Output
FIGURE 28. ISL61863EVAL1Z SCHEMATIC and ISL61863EVAL1Z PHOTOGRAPH
13
*
DESCRIPTION
IN
/5.1
Ω
load current
ISL6186
for the ISL6186 product variants with 1.5A of continuous load
current rating. The scope shot shows current limiting for ~12ms
before it is turned off and the fault signal is asserted.
Application Considerations
See Table 2 for a listing of the ISL6186XEVAL1Z board
components.
Decoupling V
Application considerations for the ISL6186 family are widely
accepted best industry practices. Good decoupling practices on
the V
least 2.2µF being recommended. For the 3.0 and 3.6A versions,
at least 33µF is recommended to prevent spiking and glitching
on V
reduce input and output inductance to the ISL6186.
Loading V
When designing with the 3A and 3.6A versions in an
implementation in which the output may be unloaded (open)
while the ISL6186 is turned on, a minimum of 4.7µF of
capacitive loading is recommended to prevent high dv/dt from
unnecessarily activating the surge/ESD circuitry.
Continuous Current Ratings
The ISL6186 provides several continuous current rated devices
specified at V
which are capable over the entire temperature extreme. At
V
specified at 1.5A and 3A. At V
specifications, but a typical value is provided in the specification
table as guidance for +25°C operation. This degraded capability
is due to the higher r
voltage.
Enhanced thermal characteristics and an increased number of
bond wires allows the 10 Ld DFN to have a higher current
capability than either the 8 Ld SOIC or 8 Ld DFN.
IN
= 3.3V, current capability is degraded, and the ISL6186 is
IN
IN
during an OC event. Use good PCB layout practices to
pin must be followed by placement close to the IC, with at
FIGURE 28B. ISL61863EVAL1Z BOARD PHOTO
IN
OUT
= 5V: these are the 1.5A, 3A and 3.6A options,
GND
VIN
IN
DS(ON)
PG
EN
of the FET switch at the lower bias
IN
FLT
= 2.5V, there are no
GND
OUT
November 3, 2011
FN7698.2