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A4409KLPTR-T Datasheet(PDF) 10 Page - Allegro MicroSystems |
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A4409KLPTR-T Datasheet(HTML) 10 Page - Allegro MicroSystems |
10 / 30 page Adjustable Frequency Buck or Buck-Boost Pre-Regulator with 2 LDOs, Window Watchdog Timer, and NPOR A4409 10 Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com Characteristic Symbol Test Conditions Min. Typ. Max. Unit NPOR UNDERVOLTAGE PROTECTION THRESHOLDS 5V0 Undervoltage Thresholds V5V0(UV,H) V5V0 rising – 4.665 – V V5V0(UV,L) V5V0 falling 4.5 4.625 4.75 V 5V0 Undervoltage Hysteresis V5V0(UV,HYS) V5V0(UV,H) – V5V0(UV,L) 20 40 60 mV NPOR TURN-ON AND TURN-OFF DELAYS NPOR Turn-On Delay td(on)NPOR 18 22.5 27 ms NPOR Turn-Off Propagation Delay td(off)NPOR ENBAT low to NPOR low, measured after ENBAT deglitch time td(ENBAT,FILT) – – 3 µs NPOR OUTPUT VOLTAGES NPOR Output Low Voltage VNPOR(L) ENBAT high, VIN ≥ 2.5 V, INPOR = 4 mA – 150 400 mV ENBAT high, VIN = 1.5 V, INPOR = 2 mA – – 800 mV NPOR Leakage Current1 INPOR(LEAK) VNPOR = 3.3 V – – 2 µA NPOR UNDERVOLTAGE FILTERING/DEGLITCH NPOR Undervoltage Filter/Deglitch Times td(NPOR,FILT) Applies to undervoltage of the 5V0 voltage 10 15 20 µs 1 Negative current is defined as coming out of the node or pin (sourcing), positive current is defined as going into the node or pin (sinking). ELECTRICAL CHARACTERISTICS – DIAGNOSTIC OUTPUTS1: Valid at 3 V ≤ VIN ≤ 36 V in buck-boost mode and VIN hav- ing first reached VIN(START), –40ºC ≤ TA = TJ ≤ 150ºC, unless otherwise specified. |
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