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ISL6161 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 ISL6161
部品説明 Dual Power Distribution Controller
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 



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ISL6161 Datasheet, ISL6161 PDF,ピン配置, 機能
®
Data Sheet
November 2003
ISL6161
FN9104.2
Dual Power Distribution Controller
The ISL6161 is a HOT SWAP dual supply power distribution
controller that can be used in PCI-Express applications.
Two external N-Channel MOSFETs are driven to distribute
and control power while providing load fault isolation. At
turn-on, the gate of each external N-Channel MOSFET is
charged with a 10µA current source. Capacitors on each
gate (see the Typical Application Diagram), create a
programmable ramp (soft turn-on) to control inrush currents.
A built in charge pump supplies the gate drive for the 12V
supply N-Channel MOSFET switch.
Over current protection is facilitated by two external current
sense resistors and FETs. When the current through either
resistor exceeds the user programmed value the controller
enters the current regulation mode. The time-out capacitor,
CTIM, starts charging as the controller enters the time out
period. Once CTIM charges to a 2V threshold, both the
N-Channel MOSFETs are latched off. In the event of a hard
and fast fault of at least three times the programmed current
limit level, the N-Channel MOSFET gates are pulled low
immediately before entering the time out period. The
controller is reset by a rising edge on the ENABLE pin.
The ISL6161 constantly monitors both output voltages and
reports either one being low on the PGOOD output as a low.
The 12V PGOOD Vth is ~10.8V and the 3.3V Vth is ~2.8V
nominally.
Features
• HOT SWAP Dual Power Distribution and Control for
+12V and +3.3V
• Provides Fault Isolation
• Programmable Current Regulation Level
• Programmable Time Out
• Charge Pump Allows the Use of N-Channel MOSFETs
• Power Good and Over Current Latch Indicators
• Adjustable Turn-On Ramp
• Protection During Turn-On
• Two Levels of Current Limit Detection Provide Fast
Response to Varying Fault Conditions
• 1µs Response Time to Dead Short
• 3µs Response Time to 200% Current Overshoot
Applications
• PCI-Express Applications
• Power Distribution and Control
• Hot Plug, Hot Swap Components
Ordering Information
PART NUMBER
ISL6161CB
TEMP. RANGE
(oC)
PACKAGE
-0 to 70
14 Ld SOIC
PKG.
DWG. #
M14.15
Pinout
ISL6161 (SOIC)
TOP VIEW
12VS 1
12VG 2
VDD 3
NC 4
ENABLE 5
3VG 6
3VS 7
14 12VISEN
13 RILIM
12 GND
11 CPUMP
10 CTIM
9 PGOOD
8 3VISEN
Typical Application Diagram
OPTIONAL
VDD RFILTER
CFILTER
12V
CGATE
ENABLE
INPUT
3.3V
CGATE
CPUMP
RSENSE
ISL6161
12VS
12VG
VDD
12VISEN
RILIM
GND
CPUMP
ENABLE CTIM
3VG PGOOD
3VS 3ISEN
RSENSE
RLOAD
RILIM
CTIM
3.3V
RLOAD
1 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. 2003. All Rights Reserved. Hot Plug™ is a trademark of Core International, Inc.
All other trademarks mentioned are the property of their respective owners.

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