ISL6172DRZA

ISL6172DRZA Datasheet

ISL6172

Part	Datasheet
ISL6172DRZA	ISL6172DRZA (pdf)

Related Parts	Information
ISL6172DRZA-T	ISL6172DRZA-T

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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 • 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 • 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 VS1 UV1 EN1 OCREF EN2 UV2 VS2 Rset1 RTR/LTCH GND PGND CPQBIAS CPQ+ CPVDD 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

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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
• 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
• 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

VS1 UV1 EN1 OCREF EN2 UV2 VS2

Rset1

RTR/LTCH GND

PGND CPQBIAS CPQ+ CPVDD
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

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Datasheet ID: ISL6172DRZA 639166