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NCV51411 - Low Voltage Buck Regulator

Description

SO-8 SO-16 DFN-18 PIN SYMBOL 1 15 1 BOOST 2 16 2, 3, 4 3 1 5, 6, 7 VIN VSW 4 2 8 SHDNB 5 7 10 6 8 13 7 9 16 SYNC GND VFB 8 10 17 VC - 3 - 6, 9, 11, 12, NC 11 - 14, 15, 18 14 FUNCTION The BOOST pin provides additional drive voltage to the on-chip NPN power transis

Features

  • V2 Architecture Provides Ultra-Fast Transient Response, Improved Regulation and Simplified Design.
  • 2.0% Error Amp Reference Voltage Tolerance.
  • Switch Frequency Decrease of 4:1 in Short Circuit Conditions Reduces Short Circuit Power Dissipation.
  • BOOST Lead Allows “Bootstrapped" Operation to Maximize Efficiency.
  • Sync Function for Parallel Supply Operation or Noise Minimization.
  • Shutdown Pin Provides Power-Down Option.
  • 85 mA Quiescent.

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Datasheet Details

Part number NCV51411
Manufacturer onsemi
File Size 351.21 KB
Description Low Voltage Buck Regulator
Datasheet download datasheet NCV51411 Datasheet
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Full PDF Text Transcription

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DATA SHEET www.onsemi.com Buck Converter - Low Voltage, Synchronization Capability 1.5 A, 260 kHz NCV51411 The NCV51411 is a 1.5 A buck regulator IC operating at a fixed-frequency of 260 kHz. The device uses the V2t control architecture to provide unmatched transient response, the best overall regulation and the simplest loop compensation for today's high-speed logic. The NCV51411 accommodates input voltages from 4.5 V to 40 V and contains synchronization circuitry. The on-chip NPN transistor is capable of providing a minimum of 1.5 A of output current, and is biased by an external “boost" capacitor to ensure saturation, thus minimizing on-chip power dissipation. Protection circuitry includes thermal shutdown, cycle-by-cycle current limiting and frequency foldback.
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