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UC2902 Datasheet Load Share Controller

Manufacturer: Texas Instruments

Overview: UC2902 UC3902 SLUS232E − DECEMBER 19, 2002 − REVISED JULY 2011 LOAD SHARE.

General Description

The UC3902 load share controller is an 8-pin device that balances the current drawn from independent, paralleled power supplies.

Load sharing is accomplished by adjusting each supplies’ output current to a level proportional to the voltage on a share bus.

The master power supply, which is automatically designated as the supply that regulates to the highest voltage, drives the share bus with a voltage proportional to its output current.

Key Features

  • D 2.7-V to 20-V Operation D 8-Pin Package D Requires Minimum Number of External Components D Compatible with Existing Power Supply Designs Incorporating Remote Output Voltage Sensin D Differential Share Bus D Precision Current Sense Amplifier (40 Gain) D UVLO (Undervoltage Lockout) Circuitry D User Programmable Share Loop Compensation.

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