Overview

Support is limited to customers who have already adopted these products.

The ISL78200 is a synchronous buck controller with a 90mΩ high-side MOSFET and low-side driver integrated. The ISL78200 supports wide input range of 3V to 40V in buck mode. It supports 2. 5A continuous load under conditions of 5V VOUT, VIN range of 8V to 36V, 500kHz and +85°C ambient temperature with still air. For any specific application, the actual maximum output current depends upon the die temperature not exceeding +125°C with the power dissipated in the IC, which is related to input voltage, output voltage, duty cycle, switching frequency, ambient temperature and board layout, etc. Refer to section “Output Current” on page 14 for more details. The ISL78200 has flexible selection of operation modes of forced PWM mode and PFM mode. In PFM mode, the quiescent input current is as low as 300µA and can be further reduced to 180µA with AUXVCC connected to VOUT under 12V VIN and 5V VOUT application. The load boundary between PFM and PWM can be programmed to cover wide applications. The low-side driver can be either used to drive an external low-side MOSFET for a synchronous buck, or left unused for a standard non-synchronous buck. The low-side driver can also be used to drive a boost converter as a pre-regulator that greatly expands the operating input voltage range down to 2. 5V or lower (refer to “Typical Application Schematic III - Boost Buck Converters” on page 5). The ISL78200 offers the most robust current protections. It uses peak current mode control with cycle-by-cycle current limiting. It is implemented with frequency foldback under current limit condition; in addition, the hiccup overcurrent mode is also implemented to guarantee reliable operations under harsh short conditions. The ISL78200 has comprehensive protections against various faults including overvoltage and over-temperature protections, etc.

ISL78200 Functional Diagram
ISL78200 Functional Diagram
  • Buck Mode: Input Voltage Range 3V to 40V (Refer to "Input Voltage" on page 14 for more details)
  • Boost Mode Expands Operating Input Voltage Lower Than 2.5V (Refer to "Input Voltage" on page 14 for more details)
  • Selectable Forced PWM Mode or PFM Mode
  • 300µA IC Quiescent Current (PFM, No Load); 180µA Input Quiescent Current (PFM, No Load, VOUT Connected to AUXVCC)
  • Less than 3µA Shut Down Input Current (IC Disabled)
  • Operational Topologies
  • Synchronous Buck
  • Non-Synchronous Buck
  • Two Stage Boost Buck
  • Programmable Frequency from 200kHz - 2.2MHz and Frequency Synchronization Capability
  • ±1% Tight Voltage Regulation Accuracy
  • Reliable Cycle-by-Cycle Overcurrent Protection
  • Temperature Compensated Current Sense
  • Frequency Foldback
  • Programmable OC Limit
  • Hiccup Mode Protection in Worst Case Short Condition
  • 20 Ld HTSSOP Package
  • AEC Q100 Qualified
  • Pb-Free (RoHS Compliant)

Applications

  • Automotive Applications
  • General Purpose Power Regulator
  • 24V Bus Power
  • Battery Power
  • Embedded Processor and I/O Supplies

Documentation

= Featured Documentation
Type Title Date
Datasheet
ISL78200 Datasheet
PDF 1.40 MB
End Of Life Notice
PLC17007 - Q1 Cy 17 General Product Life Cycle Notice
PDF 292 KB
Product Change Notice
PCN14006 - Test Site Change for the Listed Intersil Products
PDF 168 KB
Manual - Development Tools
ISL78200EVAL1Z User Guide
PDF 544 KB
Application Note
AN1681: Grounding Techniques
PDF 509 KB
Application Note
AN1684: Nonideality of Ground
PDF 397 KB
6 items

Design & Development

Software & Tools
iSim:PE Offline Simulation Tool
iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.
Downloads
ISL78200 iSim:PE Model
 Simulator Renesas
1 item

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    MOQ
    Buy / Sample
    Part Number
    ISL78200AVEZ
    circleObsolete
    memory
    view_in_ar
    		TSSOP-EP Tube 740
    ISL78200AVEZ-T
    circleObsolete
    memory
    view_in_ar
    		TSSOP-EP Reel 2500
    Parametric Table tips

    Tips for Using This Parametric Table:

    • Hide Filters button in header: Collapse or expands filters
    • Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
    • Reset button in header: Reset all filters to the page default
    • Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
    • Export button in header: Export the filtered results of the table to an Excel document
    • Filter parts search bar in header: Type to filter table results by part number
    • Hide column button in column headers: Select to hide columns in table
    • AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
    • Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
    • Document icon next to product name in row: View the featured document for this product
    • Chip icon next to the right of the document icon in row: View the block diagram for this product
    • Cart icon to the right of the chip icon: Indicates that samples are available for this product