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TPS2306 - DUAL SEQUENCING HOT SWAP POWER MANAGER

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Overview

ą TPS2306 DUAL SEQUENCING HOT SWAP POWER MANAGER D Wide Input Operating Range (2.75 V to 13.6 V) D Controls Ramp-Up Sequence and Slope, and Ramp-Down Sequence D Controls Inrush Current D Precise Linear Current Amplifier for High Efficiency and Low Voltage Drop D Programmable Overcurrent Threshold D Programmable Soft-Start Capability and Fault Timer D Internal Charge Pump Drives Low-Cost External NMOS Devices D Cascadable for Three or More Supplies D Fault Indicator Output D Direct-drive of Bus Switch D Shutdown Control with Low-Current Sleep Mode (40 µA) D Input Undervoltage Lockout D 16-pin SOIC package SLVS368 − APRIL 2001 DW PACKAGE TOP VIEW IMAX1 UP1 ENBL IREF CT GND UP2 IMAX2 1 2 3 4 5 6 7 8 16 VCC/CS1 15 DOWN1 14 GATE1 13 FAULT 12 CPUMP 11 GATE2 10 DOWN2 9 CS2 The TPS2306 Hot Swap Power Manager (HSPM) IC provides hot-swap control, fault handling and power supply sequencing of two positive voltage supplies.

The TPS2306 operates over a wide supply range allowing single part inventory for a variety of output voltages.

During the transient period of a live insertion or hot-swap event, the TPS2306 actively limits the inrush current to the plug-in module.

Key Features

  • minimize the insertion loss across the hot-swap interface. Control inputs allow the designer to program the maximum current level and the inrush current profile (slew rate) during start-up. Direct programming of the fault time-out also allows the user to establish how long the HSPM can operate in the current control mode prior to turning off the pass elements. The high degree of user programmability allows the TPS2306 to be configured for the specific load and bulk capacitance charging requireme.

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