ISL6185_14 Datasheet, PDF (1/20 Pages) Intersil Corporation – Dual USB Port Power Supply Controller

Dual USB Port Power Supply Controller
ISL6185
The ISL6185 USB power controller family provides fully
independent overcurrent (OC) fault protection for two or more
USB ports.
This product family consists of sixteen individual functional
product variants and three package options. It is operation
rated for a nominal +2.5V to +5V range and is specified over the
full commercial and industrial temperature ranges.
Each ISL6185 type incorporates in a single package two 71mΩ
P-channel MOSFET power switches for power control. Each
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 ISL6185 family offers product variants with specified
continuous output current levels of 0.6A, 1.1A, 1.5A or 1.8A; 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 pinout
and also in the 70% smaller 3x3 DFN packages providing similar
or enhanced performance in the smallest possible package.
Features
• 2.5V to 5V Operating Range
• 71mΩ Integrated Power P-channel MOSFET Switches
• Continuous Current Options for 0.6A, 1.1A, 1.5A and 1.8A
• Thermally Insensitive 12ms of Current Limiting Prior to
Turn-Off
• Output Discharges with Reverse Current Blocking When
Disabled
• Latch-off or Auto Restart Options
• 1µA Off-State Supply Current
• Enable Polarity Options
• Industry-standard Pin for Pin SOIC, and Smaller DFN Packages
Available
• UL Recognized, File Number: E333469
Applications
• USB 1, 2, 3 Port Power Management
• Low Power (18W) Electronic Circuit Limiting and Breaker
U
S
B
C
O
N +5V
T
R
O
L
L
E
R
D+
D-
OUT_1
ENABLE_1
FAULT_1
VIN
GND
ISL6185
FAULT_2
ENABLE_2
OUT_2
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
March 8, 2012
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
FN6937.3
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