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ISL97519A

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600kHz/1.2MHz PWM Step-Up Regulator

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Overview

The ISL97519A is a high frequency, high efficiency step-up voltage regulator operated at constant frequency PWM mode. With an internal 2. 0A, 200mΩ MOSFET, it can deliver up to 1A output current at over 90% efficiency. Two selectable frequencies, 600kHz and 1. 2MHz, allow trade offs between smaller components and faster transient response. An external compensation pin gives the user greater flexibility in setting frequency compensation allowing the use of low ESR Ceramic output capacitors. When shut down, it draws <1µA of current and can operate down to 2. 3V input supply. These features, along with 1. 2MHz switching frequency, make it an ideal device for portable equipment and TFT-LCD displays. The ISL97519A is available in an 8 Ld MSOP package with a maximum height of 1. 1mm. The device is specified for operation over the full -40°C to +85°C temperature range.

ISL97519A Functional Diagram
ISL97519A Functional Diagram
  • >90% Efficiency
  • 2.0A, 200mΩ Power MOSFET
  • 2.3V to 5.5V Input
  • 1.1*VIN up to 25V Output
  • 600kHz/1.2MHz Switching Frequency Selection
  • Adjustable Soft-Start
  • Internal Thermal Protection
  • 1.1mm Max Height 8 Ld MSOP Package
  • Pb-Free (RoHS compliant)
  • Halogen Free

Documentation

Featured Documentation
Type Title Date
Datasheet
ISL97519A Datasheet
PDF 728 KB
Application Note
AN9208: High Frequency Power Converters
PDF 592 KB
Product Change Notice
PCN15046 - Wafer Fabrication Site Change for Listed Intersil Products - Global Foundry P6 Process transfer to Palm Bay - Phase II
PDF 398 KB
Application Note
AN1681: Grounding Techniques
PDF 509 KB
Application Note
AN1684: Nonideality of Ground
PDF 397 KB
Application Note
AN9210: A New Pspice Subcircuit For The Power MOSFET Featuring Global Temperature Options
PDF 650 KB
Application Note
AN9209: A Spice-2 Subcircuit Representation For Power MOSFETs Using Empirical Methods
PDF 387 KB
Application Note
AN7244: Understanding Power MOSFETs
PDF 349 KB
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  1. Looking for step-up dc/dc converter with Vin 2.5V , Vout 30V

    Hello Team, I am looking for a boost converter with the following requirements : Vin 2.5 To 4V Vout >30V power output 8W, I did not manage to find any boost device that accepts Vin below 4.5V, could you please advise if we have anything to offer? Thanks in ...

    Dec 7, 2023
  2. ISL97519 output at 3 Volts with Enable pin low

    I'm using an ISL97519 switching regulator with a 3.2 Volt input and 5 Volt fixed output.  My PCB implements the  typical operating circuit detailed in the ISL datasheet.  The output is a stable 5 Volts with enable pulled high, but only drops to 3.0 Volts when the ...

    Sep 7, 2020