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Intersil Corporation - Dual Low Voltage Hot Swap Controller

Numéro de référence ISL6172DRZA
Description Dual Low Voltage Hot Swap Controller
Fabricant Intersil Corporation 
Logo Intersil Corporation 





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ISL6172DRZA fiche technique
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Data Sheet
June 2004
ISL6172
FN9158
Dual Low Voltage Hot Swap Controller
This IC targets dual voltage hot swap applications across the
+2.5V to +3.3V bias supply voltage range with a second lower
voltage rail down to less than 1V. It features a charge pump for
driving external N-Channel MOSFETs, regulated current
protection and duration, output undervoltage monitoring and
reporting, optional latch-off or retry response, and adjustable
soft-start.
The current regulation level (CR) for each rail is set by two
external resistors and each CR duration is set by an external
capacitor on the TIM pin. After the CR duration has expired
the IC then quickly pulls down the associated GATE(s)
output turning off its external FET(s). The ISL6172 offers a
latched output or indefinite auto retry mode of operation.
Ordering Information
TEMP.
PART NUMBER RANGE (°C)
PACKAGE
PKG.
DWG. #
ISL6172DRZA * 0 to +85 28 Ld 5x5 QFN (Pb-free) L28.5x5
ISL6172DRZA-T * 0 to +85 28 Ld 5x5 QFN (Pb-free) L28.5x5
ISL6172EVAL3 Evaluation Platform
* 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.
Pinout
28 LEAD QFN
TOP VIEW
Features
• Dual Supply Hot Swap Power Distribution Control to <1V
• Less than 1µs Response Time to Dead Short
• Overcurrent Circuit Breaker Fault Isolation and
Programmable Current Regulation Level Protection
Functions
• Programmable Current Regulation Duration
• Charge Pump Allows the use of N-Channel MOSFETs
• Rail Independent Control, Monitoring and Reporting I/O
• Adjustable Ramp up for Inrush Protection During Turn On
• Two Levels of Overcurrent Detection Provide Fast
Response to Varying Fault Conditions
• Latch-off or Auto Reset Response to Fault Functions
• Adjustable Current Regulation Threshold as low as 20mV
• QFN Package:
- Compliant to JEDEC PUB95 MO-220
QFN - Quad Flat No Leads - Package Outline
- Near Chip Scale Package footprint, which improves
PCB efficiency and has a thinner profile
• Pb-free
Applications
• Power Supply Sequencing, Distribution and Control
• Hot Swap/Electronic Breaker Circuits
• Network Hubs, Routers, Switches
• Hot Swap Bays, Cards and Modules
V1(in)
Rsns1
V1(out)
28 27 26 25 24 23 22
SNS2 1
21 SNS2
VO1 2
20 VO2
SS1 3
19 SS2
GT1 4
18 GT2
FLT1 5
17 FLT2
PG1 6
16 PG2
CT1 7
15 CT2
8 9 10 11 12 13 14
EN1 EN2
RTR/LTCH
BIAS
CPQ+
VS1
SNS1 GT1 VO1
UV1
PG1
FLT1
SS1
CPQ-
CPVDD
ISL6172
OCREF
SS2
FLT2
PGND
PG2
GND
UV2
CT1 CT2 VS2 SNS2 GT2 VO2
V2(in)
Rsns2
FIGURE 1. TYPICAL APPLICATION
V2(OUT)
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. 2004. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

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