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NCV898031 Dataheets PDF



Part Number NCV898031
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description SEPIC/Boost Controller
Datasheet NCV898031 DatasheetNCV898031 Datasheet (PDF)

2 MHz Non-Synchronous SEPIC/Boost Controller NCV898031 The NCV898031 is an adjustable output non−synchronous 2 MHz SEPIC/boost controller which drives an external N−channel MOSFET. The device uses peak current mode control with internal slope compensation. The IC incorporates an internal regulator that supplies charge to the gate driver. Protection features include internally−set soft−start, undervoltage lockout, cycle−by−cycle current limiting and thermal shutdown. Additional features include l.

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2 MHz Non-Synchronous SEPIC/Boost Controller NCV898031 The NCV898031 is an adjustable output non−synchronous 2 MHz SEPIC/boost controller which drives an external N−channel MOSFET. The device uses peak current mode control with internal slope compensation. The IC incorporates an internal regulator that supplies charge to the gate driver. Protection features include internally−set soft−start, undervoltage lockout, cycle−by−cycle current limiting and thermal shutdown. Additional features include low quiescent current sleep mode and microprocessor compatible enable pin. Features • Peak Current Mode Control with Internal Slope Compensation • 1.2 V $2% Reference Voltage • 2 MHz Fixed Frequency Operation • Wide Input Voltage Range of 3.2 V to 40 V, 45 V Load Dump • Input Undervoltage Lockout (UVLO) • Internal Soft−Start • Low Quiescent Current in Sleep Mode (< 10 mA Typical) • Cycle−by−Cycle Current Limit Protection • Hiccup−Mode Overcurrent Protection (OCP) • Hiccup−Mode Short−Circuit Protection (SCP) • Thermal Shutdown (TSD) • NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable • This is a Pb−Free Device Typical Applications • Small Form Factor Point−of−Load Power Regulation • Headlamps • Backlighting DATA SHEET www.onsemi.com 8 1 SOIC−8 D SUFFIX CASE 751 MARKINGDIAGRAM 8 898031G ALYW G 1 898031G = Specific Device Code A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package PIN CONNECTIONS EN 1 ISNS 2 GND 3 GDRV 4 8 VFB 7 VC 6 VIN 5 VDRV (Top View) ORDERING INFORMATION Device Package Shipping† NCV898031D1R2G SOIC−8 2500 / Tape & (Pb−Free) Reel †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D. © Semiconductor Components Industries, LLC, 2017 1 November, 2021 − Rev. 17 Publication Order Number: NCV898031/D NCV898031 ENABLE 1 EN VC 7 RC CC TEMP OSC SC PWN FAULT LOGIC CLK DRIVE LOGIC VDRV CL CSA + SCP Gm SS Vref 6 VIN CDRV 5 VDRV 4 GDRV L1 ● CCPL D Q ● L2 2 ISNS 3 GND RSNS RF1 8 VFB RF2 Figure 1. Simplified Block Diagram and Application Schematic Vg Cg Vo Co PACKAGE PIN DESCRIPTIONS Pin No. Pin Symbol Function 1 EN Enable input. The part is disabled into sleep mode when this pin is brought low for longer than the enable time−out period. 2 ISNS Current sense input. Connect this pin to the source of the external N−MOSFET, through a current−sense resistor to ground to sense the switching current for regulation and current limiting. 3 GND Ground reference. 4 GDRV Gate driver output. Connect to gate of the external N−MOSFET. A series resistance can be added from GDRV to the gate to tailor EMC performance. 5 VDRV Driving voltage. Internally−regulated supply for driving the external N−MOSFET, sourced from VIN. Bypass with a 1.0 mF ceramic capacitor to grou.


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