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ISL6119USBEVAL1 Folha de dados(PDF) 1 Page - Intersil Corporation

Nome de Peças ISL6119USBEVAL1
Descrição Electrónicos  USB Dual Port Power Supply Controller
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Fabricante Electrônico  INTERSIL [Intersil Corporation]
Página de início  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL6119USBEVAL1 Folha de dados(HTML) 1 Page - Intersil Corporation

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1
®
FN9002.3
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2004. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL6119
USB Dual Port Power Supply Controller
The ISL6119 is a USB dual port power controller, fully
independent overcurrent (OC) fault protection IC.
Operational over the +2.5V to +5.5V range, this device
features internal current monitoring, accurate current
limiting, integrated power switches and current limited
delay to latch-off for system protection.
The ISL6119 current sense and limiting circuitry sets the current
limit to a nominal 1A, making this device well suited for the USB
port power management application. The ISL6119 provides OC
fault notification, accurate current limiting and a consistent
timed latch-off thus isolating and protecting the voltage bus in
the presence of an OC event or short circuit. The 12ms time to
latch-off is independent of the adjoining switch’s electrical or
thermal condition and the OC response time is inversely related
to the OC magnitude.
Each ISL6119 incorporates in a single 8 lead SOIC
package two 80m
Ω N-channel MOSFET power switches
for power control. Each switch is driven by a constant
current source giving a controlled ramp up of the output
voltage. This provides a soft start turn-on eliminating bus
voltage drooping caused by inrush current while charging
heavy load capacitances. Independent enabling inputs and
fault reporting outputs for each channel are compatible with
3V and 5V logic to allow external control and monitoring.
The ISL6119 undervoltage lockout feature prevents turn-on
of the outputs unless the correct ENABLE state and VIN >
2.5V are present. During initial turn-on the ISL6119
prevents fault reporting by blanking the fault signal. Rising
and falling outputs are current limited voltage ramps so that
both the inrush current and voltage slew rate are limited,
independent of load. This reduces supply droop due to
surge and eliminates the need for external EMI filters.
During operation, once an OC condition is detected the
appropriate output is current limited for 12ms to allow
transient conditions to pass. If still in current limit after the
current limit period has elapsed, the output is then latched
off and the fault is reported by pulling the corresponding
FAULT low. The FAULT signal is latched low until reset by
the ENABLE signal being de-asserted at which time the
FAULT signal will clear.
Features
•80m
Ω Integrated Power N-channel MOSFET Switches
• Accurate Current Sensing and 1A Current Limiting
• 12ms Fault Delay to Latch-Off, No Thermal Dependency
• 2.5V to 5.5V Operating Range
• Disabled Output Internally Pulled Low
• Undervoltage Lockout
• Controlled Turn-on Ramp Time
• Channel Independent Fault Output Signals
• Compatible with 3.3V and 5V Logic Families
• Channel Independent Logic Level Enable High Inputs
(ISL6119H) or Enable Low Inputs (ISL6119L)
• Pb-Free Package Options
• Available in Tape & Reel with ‘-T’ Part Number Suffix
Applications
• USB Port Power Management
• Electronic Circuit Limiting and Breaker
Pinout
ISL6119 (SOIC)
TOP VIEW
Ordering Information
PART
NUMBER
TEMP.
RANGE (°C)
PACKAGE
PKG.
DWG. #
ISL6119LIB
-40 to 85
8 Lead SOIC
M8.15
ISL6119LIBZA
(Note)
-40 to 85
8 Lead SOIC (Pb-free) M8.15
ISL6119HIB
-40 to 85
8 Lead SOIC
M8.15
ISL6119HIBZA
(Note)
-40 to 85
8 Lead SOIC (Pb-free) M8.15
ISL6119EVAL1
Evaluation Platform
ISL6119USBEVAL1 USB Dual Port Evaluation Platform
NOTE: Intersil Pb-free products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which is compatible with both SnPb and
Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed
the Pb-free requirements of IPC/JEDEC J Std-020B.
1
2
3
4
8
7
6
5
VIN
OUT_1
OUT_2
FAULT_1
FAULT_2
GND
ENABLE_1
ENABLE_2
Data Sheet
March 2004


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