ISL6186_14 Datasheet, PDF (1/18 Pages) Intersil Corporation – USB Port Power Supply Controller

USB Port Power Supply Controller
ISL6186
The ISL6186 USB power controller family provides
overcurrent (OC) fault protection for one or more USB ports.
This product family consists of eight individual functional
product variants and three package options and is operation
rated for a nominal +2.5V to +5V range and specified over
the full commercial and industrial temperature ranges.
Each ISL6186 type incorporates a 45mΩ P-channel MOSFET
power switch for power control and features internal current
monitoring, accurate current limiting, and current limited
delay to turn-off for system supply protection along with
control and communication I/O.
The ISL6186 family offers product variants with specified
continuous output current levels of 1.5A, 3A or 3.6A, enable
active high or low inputs, and latch off or automatic retry after
overcurrent turn-off, making these devices well suited for many
low-power applications.
This family of ICs is offered in an industry standard SOIC package
as well as in the 70% smaller 3x3 DFN package, which provides
the same performance and an additional Power-Good output
feature in the smallest possible (10 Ld DFN) package.
Features
• 2.5V to 5V Operating Range
• 45mΩ Integrated Power P-channel MOSFET Switches
• Continuous Current Options for 1.5A, 3A and 3.6A
• Thermally Insensitive 12ms of Current Limiting Prior to
Turn-Off
• Output Discharges with Reverse Current Blocking When
Disabled
• Latch-off or Auto Restart and Enable Polarity Options
• 1µA Off-State Supply Current
• Industry Standard Pin-for-Pin SOIC and Smaller DFN
Packages Available
Applications
• USB Port Power Management Including USB 3.0
• Low Power Electronic Circuit Limiting and Breaker
U
S
B
C
O
N +5V
T
R
O
L
L
E
R
D+
D-
ENABLE
OUT
FAULT
VIN
GND
ISL6186
D+
D-
USB PORT POWER
FIGURE 1. TYPICAL APPLICATION
USB
PORT 1
VBUS
VBUS
USB
PORT_2
1.3
1.2
1.1
1.0
0.9
0.8
0.7
-40 -25
0
25
45
75
TEMPERATURE (°C)
85 115
FIGURE 2. NORMALIZED r_DS(ON) TEMPERATURE
CHARACTERISTIC CURVE
November 3, 2011
1
FN7698.2
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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