ZXCT1021

ZXCT1021

Document overview

• Manufacturer or author: Diodes Incorporated
• PDF pages: 8

Technical content

Features

• Accurate High-Side Current Sensing
• Output Voltage Scaling
• 2.5V to 20V Supply Range
• 25µA Quiescent Current
• 1% Typical Accuracy
• SOT25 Package
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
• For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/ Pin Assignments SOT25

Applications

• Battery chargers
• Smart battery packs
• DC motor controls
• Overcurrent monitors
• Power management
• Level translating
• Programmable current sources Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen - and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. Typical Applications Circuit VOUT

Document number: DS33446 Rev. 10 - 2 2 of 8 www.diodes.com April 2025 © 2025 Copyright Diodes Incorporated. All Rights Reserved. ZXCT1021 Pin Descriptions Pin Name Function NC Not Internally Connected GDN Ground VOUT Voltage Output Referenced to GND. Intended to drive high impedance loads. VSENSE- High Impedance Negative Sense Voltage Input VSENSE+ Supply and Positive Sense Voltage Input Absolute Maximum Ratings Parameter Rating Unit Voltage on Any Pin with Respect to END Pin -0.6 to 20 V VSENSE -0.6 to VIN +0.5 V Operating Temperature -40 to +85 °C Storage Temperature -55 to +150 °C Package Power Dissipation (Tamb = +25°C) 300 mW Electrical Characteristics (@Tamb = +25°C, VIN = 15V, unless otherwise specified.) Symbol Parameter Conditions Min Typ Max Unit VIN VCC Range — 2.5 — 20 V VOUT Output Voltage VSENSE = 30mV 291 300 309 mV VSENSE = 100mV 0.98 1.00 1.02 V VSENSE = 150mV 1.47 1.50 1.53 V ROUT Output Resistance — 10 15 20 kΩ TC (Note 4) Output Voltage Temperature Coefficient — — 50 300 ppm IQ Ground Pin Current VSENSE = 0V — 25 35 µA VSENSE (Note 5) Sense Voltage VIN = 20V 0 — 1.5 (Note 6) V ILOAD VSENSE- Load Pin Input Current VSENSE = 0V — — 100 nA ACC Accuracy VSENSE = 100mV -2 — 2 % Gain VOUT / VSENSE VSENSE = 100mV 9.8 10 10.2 V/V BW Bandwidth VSENSE = 10mV — 300 — kHz VSENSE = 100mV — 2 — MHz Notes: 4. TC limits are determined by characterization. 5. VSENSE = VIN – VLOAD 6. This will be reduced at lower VIN voltages due to clipping of output voltage.

Document number: DS33446 Rev. 10 - 2 3 of 8 www.diodes.com April 2025 © 2025 Copyright Diodes Incorporated. All Rights Reserved. ZXCT1021 Typical Characteristics (V)

Document number: DS33446 Rev. 10 - 2 4 of 8 www.diodes.com April 2025 © 2025 Copyright Diodes Incorporated. All Rights Reserved. ZXCT1021 Typical Characteristics (continued)

Document number: DS33446 Rev. 10 - 2 6 of 8 www.diodes.com April 2025 © 2025 Copyright Diodes Incorporated. All Rights Reserved. ZXCT1021

Ordering Information

E5: SOT25 TA: 7” Tape & Reel Orderable Part Number Package Package Code Reel Size (inches) Tape Width (mm) Packing Qty. Carrier ZXCT1021E5TA SOT25 E5 7 8 3000 Tape & Reel Marking Information 1 2 3 1021 ( Top View ) 1021: Marking ID Orderable Part Number Package Marking ID ZXCT1021E5TA SOT25 1021 Package Packing

Document number: DS33446 Rev. 10 - 2 7 of 8 www.diodes.com April 2025 © 2025 Copyright Diodes Incorporated. All Rights Reserved. ZXCT1021 Package Outline Dimensions Please see http://www.diodes.com/package-outlines.html for the latest version. SOT25 SOT25 Dim Min Max Typ A 0.35 0.50 0.38 B 1.50 1.70 1.60 C 2.70 3.00 2.80 D - - 0.95 H 2.90 3.10 3.00 J 0.013 0.10 0.05 K 1.00 1.30 1.10 L 0.35 0.55 0.40 M 0.10 0.20 0.15 N 0.70 0.80 0.75  0° 8° - All Dimensions in mm Suggested Pad Layout Please see http://www.diodes.com/package-outlines.html for the latest version. SOT25 Dimensions Value Z 3.20 G 1.60 X 0.55 Y 0.80 C1 2.40 C2 0.95 Mechanical Data

• Moisture Sensitivity: Level 1 per J-STD-020
• Terminals: Finish – Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208
• Weight: 0.015298 grams (Approximate) A M J LD B C H K N X Z Y C2C2 G

Document number: DS33446 Rev. 10 - 2 8 of 8 www.diodes.com April 2025 © 2025 Copyright Diodes Incorporated. All Rights Reserved. ZXCT1021 IMPORTANT NOTICE 1. DIODES INCORPORATED (Diodes) AND ITS SUBSIDIARIES MAKE NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO ANY INFORMATION CONTAINED IN THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICUL AR PURPOSE OR NON -INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 2. The Information contained herein is for informational purpose only and is provided only to illustrate the operation of Diodes ’ products described herein and application examples. Diodes does not assume any liability arising out of the application or use of this document or any product described herein. This document is intended for skilled and technically trained engineering customers and users who design with Diodes’ products. Diodes’ products may be used to facilitate safety-related applications; however, in all instances customers and users are responsible for (a) selecting the appropriate Diodes products for their applications, (b) evaluating the suitability of Diodes’ products for their intended applications, (c) ensuring their applications, which in corporate Diodes’ products, comply the applicable legal and regulatory requirements as well as safety and functional - safety related standards, and (d) ensuring they design with appropriate safeguards (including testing, validation, quality co ntrol techniqu es, redundancy, malfunction prevention, and appropriate treatment for aging degradation) to minimize the risks associated with their applications. 3. Diodes assumes no liability for any application-related information, support, assistance or feedback that may be provided by Diodes from time to time. Any customer or user of this document or products described herein will assume all risks and liabilities associated with such use, and will hold Diodes and all companies whose products are represented herein or on Diodes’ websites, harmless against all damages and liabilities. 4. Products described herein may be covered by one or more United States, international or foreign patents and pending patent applications. Product names and markings noted herein may also be covered by one or more United States, international or foreign t rademarks and trademark applications. Diodes does not convey any license under any of its intellectual property rights or the rights of any third parties (including third parties whose products and services may be described in this document or on Diodes’ website) under this document. 5. Diodes’ products are provided subject to Diodes’ Standard Terms and Conditions of Sale (https://www.diodes.com/about/company/terms-and-conditions/terms-and-conditions-of-sales/) or other applicable terms. This document does not alter or expand the applicable warranties provided by Diodes. Diodes does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. 6. Diodes’ products and technology may not be used for or incorporated into any products or systems whose manufacture, use or sa le is prohibited under any applicable laws and regulations. Should customers or users use Diodes’ products in contravention of a ny applicable laws or regulations, or for any unintended or unauthorized application, customers and users will (a) be solely responsible for any da mages, losses or penalties arising in connection therewith or as a result thereof, and (b) indemnify and hold Diodes and its representatives and agents harmless against any and all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim relating to any noncompliance with the applicable laws and regulations, as well as any unintended or unauthorized application. 7. While efforts have been made to ensure the information contained in this document is accurate, complete and current, it may c ontain technical inaccuracies, omissions and typographical errors. Diodes does not warrant that information contained in this docum ent is error-free and Diodes is under no obligation to update or otherwise correct this information. Notwithstanding the foregoing, Diodes reserves the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the final and determinative format released by Diodes. 8. Any unauthorized copying, modification, distribution, transmission, display or other use of this document (or any portion her eof) is prohibited. Diodes assumes no responsibility for any losses incurred by the customers or users or any third parties arising from any such unauthorized use. 9. This Notice may be periodically updated with the most recent version available at https://www.diodes.com/about/company/terms-and- conditions/important-notice The Diodes logo is a registered trademark of Diodes Incorporated in the United States and other countries. All other trademarks are the property of their respective owners. © 2025 Diodes Incorporated. All Rights Reserved. www.diodes.com