ZXCT1009 overview

ZXCT1009 is a component documented by Zetex Semiconductors. The PDF description identifies it as "HIGH-SIDE CURRENT MONITOR." This guide condenses the most useful engineering information from the available PDF so that designers and sourcing teams can identify the checks that still need confirmation in the original document.

Datasheet snapshot

  • Manufacturer: Zetex Semiconductors
  • Part number: ZXCT1009
  • Category: IC
  • Datasheet length: 8 Pages

Key features noted in the PDF

  • Low cost, accurate high-side current sensing.
  • Output voltage scaling.
  • Up to 2.5V sense voltage.
  • 2.5V – 20V supply range.
  • 4µA quiescent current.
  • 1% typical accuracy.
  • SOT23 & SM8 † packages.

Applications listed in the PDF

  • Battery Chargers
  • Smart Battery Packs
  • DC Motor control
  • Over current monitor
  • Power Management
  • Level translating

Specifications and operating details

The following points were extracted from the PDF text. Check the associated conditions, notes and limits in the complete document before using a value in a design.

  • The wide input voltage range of 20V down to as low as 2.5V make it suitable for a range of applications.
  • A minimum operating current of just 4µA, combined with its SOT23 package make it a unique solution, suitable for portable battery equipment.
  • A 1A current is to be represented by a 100mV output voltage: 1)Choose the value of Rsense to give 50mV > Vsense > 500mV at full load.
  • 2)Choose Rout to give Vout = 100mV, when V sense = 100mV.
  • Rearranging 1 for Rout gives: Rout = Vout /(Vsense x 0.01) Rout = 0.1 / (0.1 x 0.01) = 100 Ω Vin Vin Iout Load Vout Rsense Rload Rout ZXCT1009 TYPICAL CIRCUIT APPLICATION POWER DISSIPATION The maximum allowable power dissipation of the dev.
  • The circuit can be configured to charge up to four Li-Ion cells at a charge current of 1.25A.
  • Switching frequency of the PWM loop is approximately 120kHz.

Topics covered by the datasheet

The document includes sections related to:

  • DESCRIPTION
  • FEATURES
  • APPLICATIONS
  • ORDERING INFORMATION
  • ELECTRICAL CHARACTERISTICS

Engineering review checklist

  • Check resistance value, tolerance, temperature coefficient and long-term stability over the operating range.
  • Derate continuous power for ambient temperature and verify pulse or surge capability separately.
  • Match the land pattern, termination finish and current-sense routing to the exact package option.

Always confirm values against the latest manufacturer-controlled datasheet, especially when qualifying a substitute or releasing a production BOM.

View the complete PDF and model record

Open the ZXCT1009 datasheet and model details to review the complete PDF, document pages and available product information.

Source attribution

Adapted from the PDF associated with this DigiCamel model page.

Source model URL: https://www.digicamel.com/product.php?slug=zxct1009-zetex-semiconductors

ZXCT1009 Zetex Semiconductors IC ZXCT1009 datasheet ZXCT1009 specifications ZXCT1009 applications