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IR3522MTRPBF Datasheet(PDF) 2 Page - International Rectifier |
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IR3522MTRPBF Datasheet(HTML) 2 Page - International Rectifier |
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2 / 32 page  IR3522 Page 2 V3.01 ORDERING INFORMATION Device Package Order Quantity IR3522MTRPBF 32 Lead MLPQ (5 x 5 mm body) 3000 per reel * IR3522MPBF 32 Lead MLPQ (5 x 5 mm body) 100 piece strips * Samples only PIN DESCRIPTION PIN# PIN SYMBOL PIN DESCRIPTION 1 SDA SDA (Serial Data) is a bidirectional signal that is an input and open drain output for both master (I 2C controller) and slave (IR3522). SDA requires a pull resistor to a bias voltage and should not be floated. 2 PGBIAS Input to provide bias to the Power Good output transistor directly from the converter input voltage. Enables the Power Good output to assert even if there is no bias supplied to the VCCL pin. Internal voltage clamp protects the pin. Do not exceed 100 uA of pull-up current. 3 ENABLE Enable input. A logic low applied to this pin puts the IC into fault mode. A logic high on the pin resets and enables the converter. Do not float this pin as the logic state will be undefined. 4 IIN2 Output 2 average current input from the output 2 phase IC(s). 5 ADDR1 Digital input to program bit 1 of the 2 bit address code with internal pull-up. Connect to LGND for logic “0”, float for logic “1” 6 ADDR2 Digital input to program bit 2 of the 2 bit address code with internal pull-up. Connect to LGND for logic “0”, float for logic “1” 7 OCSET2 Programs the output 2 constant converter output current limit through an external resistor tied to VREF1 and an internal current source from this pin. Over-current protection can be disabled by over sizing the resistor value to program the threshold higher than IIN2 pin possible signal amplitude, but no greater than 5V (do not float this pin as improper operation will occur). 8 EAOUT2 Output of the output 2 error amplifier. 9 FB2 Inverting input to the output 2 error amplifier. 10 VOUT2 Output 2 remote sense amplifier output. 11 VOSEN2+ Output 2 remote sense amplifier input. Connect to output at the load. 12 VOSEN2- Output 2 remote sense amplifier input. Connect to ground at the load. 13 VOSEN1- Output 1 remote sense amplifier input. Connect to ground at the load. 14 VOSEN1+ Output 1 remote sense amplifier input. Connect to output at the load. 15 VOUT1 Output 1 remote sense amplifier output. Provides reference to Error Amp2. 16 FB1 Inverting input to the output 1 error amplifier. 17 EAOUT1 Output of the output 1 error amplifier. 18 OCSET1 Programs the output 1 constant converter output current limit through an external resistor tied to VREF1 and an internal current source from this pin. Over-current protection can be disabled by over sizing the resistor value to program the threshold higher than IIN2 pin possible signal amplitude, but no greater than 5V (do not float this pin as improper operation will occur). 19 VREF1 Reference voltage programmed by the I 2C inputs and error amplifier non-inverting input. Connect an external RC network to LGND to program dynamic VID slew rate and provide compensation for the internal buffer amplifier. 20 SS/DEL1 Connect an external capacitor to LGND to program startup and Fault delay timing |
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