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A4410KLVTR-T Datasheet(PDF) 6 Page - Allegro MicroSystems |
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A4410KLVTR-T Datasheet(HTML) 6 Page - Allegro MicroSystems |
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6 / 41 page  Adjustable Frequency Buck or Buck/Boost Pre-Regulator with a Synchronous Buck, 3 Internal LDOs, Window Watchdog Timer, and NPOR A4410 6 Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com Terminal List Table Number Name Function 1 VCP Charge pump reservoir capacitor 2,3 VIN Input voltage 4,9 GND Ground 5 N/C No Connect 6 VCC Internal voltage regulator bypass capacitor pin 7 SS1 Soft start programming pin for the buck/boost pre-regulator 8 COMP1 Error amplifier compensation network pin for the buck/boost pre-regulator 10 TRACK Tracking control: Open/High – V5P tracks 3V3, GND/Low – V5P tracks V5 11 NPOR Active LOW, open-drain regulator fault detection output 12 POK5V PowerOK output indicating when either the V5 or V5P rail is under- voltage (UV) 13 ENBAT1S Open drain ignition status output, for ENBAT1 only 14 ENBAT2S Open drain ignition status output, for ENBAT2 only 15 FSET/ SYNC Frequency setting and synchronization input 16 ENBAT1 Ignition enable input from the key/switch via a 1K of resistance 17 ENBAT2 Ignition enable input from the key/switch via a 1K of resistance 18 ENB Logic enable input from the micro-controller 19 3V3 3.3 V regulator output 20 WDIN Watchdog refresh input (rising edge triggered) from a micro-controller or DSP 21 WDADJ The watchdog wait/delay time is programmed by connecting RADJ from this pin to ground 22 WDENn Watchdog enable pin: Open/Low – WD is enabled, High – WD is disabled 23 V5P 5 V tracking/protected regulator output 24 SS2 Soft start programming pin for the 1.25 V synchronous buck 25 FB1V25 Feedback pin for the 1.25 V regulator 26 COMP2 Error amplifier compensation network pin for the 1.25 V synchronous regulator 27,28 PGND Power ground for the 1.25 V synchronous regulator / gate driver 29,30 LX2 Switching node for the 1.25 V synchronous regulator 31 V5 5 V regulator output 32 VREG Output of the buck-boost and input for the LDOs and 1.25 VOUT sync. Buck 33 LG Boost gate drive output for the buck/boost pre-regulator 34 SLEW Slew rate adjustment for the rise time of LX1 35,36 LX1 Switching node for the buck/boost pre-regulator 37 CP1 Charge pump capacitor connection 38 CP2 Charge pump capacitor connection – PAD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 PAD VCP VIN VIN GND N/C VCC SS1 COMP1 GND TRACK NPOR POK5V ENBAT1S ENBAT2S FSET/SYNC ENBAT1 ENBAT2 ENB 3V3 CP2 CP1 LX1 LX1 SLEW LG VREG V5 LX2 LX2 PGND PGND COMP2 FB 1V25 SS2 V5P WD ENn WD ADJ WD IN Package LV, 38-Pin eTSSOP Pin-out Diagram |
Similar Part No. - A4410KLVTR-T |
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Similar Description - A4410KLVTR-T |
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