ZXCT1008
Document overview
- Manufacturer or author: Diodes Incorporated
- PDF pages: 8
Technical content
Features
Low Cost, Accurate High-Side Current Sensing -40 to +125℃ Temperature Range Up to 500mV Sense Voltage 2.5V to 20V Supply Range 4μA Quiescent Current 1% Typical Accuracy SOT23 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) An Automotive -Compliant Part is Available Under Separate Data Sheet (ZXCT1008Q)
Applications
Automotive Current Measurement DC Motor and Solenoid Control Over Current Monitor Power Management Pin Assignments (Top View) SOT23 Application Circuit ZXCT1008 VSENSE+ VSENSE- IOUT RSENSE RLIM R VIN To load VOUT Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html 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. IOUT VSENSE+ 3VSENSE- (Top View)
1 IOUT
(Top View)
Document number: DS33440 Rev.8 - 2 2 of 8 www.diodes.com December 2017 © Diodes Incorporated ZXCT1008 Pin Descriptions Pin Name Pin Function VSENSE+ Connection to Supply Voltage VSENSE- Connection to Load IOUT Output Current, Proportional to Measured Current Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.) Description Rating Unit Voltage on Any Pin (relative to IOUT) -0.6 to 20 V Continous Output Current, IOUT 25 mA Continuous Sense Voltage, VSENSE (Note 4) -0.5 to 5 V Operating Temperature, TA -40 to +85 °C Storage Temperature -55 to +125 °C Package Power Dissipation @ TA = +25°C (Derate to Zero @ +125°C) 450 mW Operation above the absolute maximum rating may cause device failure. Operation at the absolute maximum ratings for extended periods may reduce device reliability. Electrical Characteristics (@TA = +25°C, VIN = 5V, ROUT = 100Ω, unless otherwise specified.) Symbol Parameter Conditions Min Typ Max Unit VIN VCC Range — 2.5 — 20 V IOUT Output Current (Note 5) VSENSE = 0V VSENSE = 10mV VSENSE = 100mV VSENSE = 200mV VSENSE = 500mV 0.975 1.95 4.8 104 1.0 2.0 5.0 120 1.025 2.05 5.2 µA µA mA mA mA VSENSE Sense Voltage (Note 4) — 0 — 500 mV ISENSE- VSENSE - Input Current — — — 100 nA ACC Accuracy RSENSE = 0.1Ω, VSENSE = 200mV -2.5 — 2.5 % GM Transconductance, IOUT/VSENSE — 10,000 — µA/V BW Bandwidth VSENSE(DC) = 10mV, RF PIN = -40dBm (Note 6) — 300 — kHz VSENSE(DC) = 100mV, RF PIN = -20dBm (Note 6) 2 — MHz Notes: 4. VSENSE is defined as the differential voltage between VSENSE+ and VSENSE- VSENSE = VSENSE+ - VSENSE- = VIN - VLOAD = ILOAD x RSENSE 5. Includes input offset voltage contribution. 6. -20dBm=63mVPP into 50Ω.
Document number: DS33440 Rev.8 - 2 3 of 8 www.diodes.com December 2017 © Diodes Incorporated ZXCT1008 Typical Characteristics
Document number: DS33440 Rev.8 - 2 4 of 8 www.diodes.com December 2017 © Diodes Incorporated ZXCT1008 Typical Characteristics (Continued) Power Dissipation The maximum allowable power dissipation of the device for normal operation (PMAX), is a function of the package junction to ambient thermal resistance ( θJA), maximum junction temperature (T JMAX), and ambient temperature (TAMB), according to the expression: PMAX = (TJMAX – TAMB) / θJA The device power dissipation, PD is given by the expression: PD = IOUT x (VIN -VOUT) W
Application Information
The following text describes how to scale a load current to an output voltage. Figure 1. Generic ZXCT1008 Configuration For example, choose VSENSE = 100mV at 1.0A. From (1) RSENSE = VSENSE/ILOAD = 0.1/1.0 = 0.1Ω.
voltage transient incidents. Figure 2. ZXCT1008 with Additional Current Limiting Resistor RLIM compensates for the NTC of the device. PCB layout is available through Diodes applications group.
Document number: DS33440 Rev.8 - 2 6 of 8 www.diodes.com December 2017 © Diodes Incorporated ZXCT1008
Ordering Information
(Note 7) Package Code Identification Code Packing: 7” Tape and Reel Quantity Tape Width Part Number Suffix ZXCT1008FTA SOT23 F 108 3,000 Units 8mm TA Marking Information (1) Package Type: SOT23 XXX : Identification Code: 108
Document number: DS33440 Rev.8 - 2 7 of 8 www.diodes.com December 2017 © Diodes Incorporated ZXCT1008 Package Outline Dimensions Please see http://www.diodes.com/package-outlines.html for the latest version. SOT23 SOT23 Dim Min Max Typ A 0.37 0.51 0.40 B 1.20 1.40 1.30 C 2.30 2.50 2.40 D 0.89 1.03 0.915 F 0.45 0.60 0.535 G 1.78 2.05 1.83 H 2.80 3.00 2.90 J 0.013 0.10 0.05 K 0.890 1.00 0.975 K1 0.903 1.10 1.025 L 0.45 0.61 0.55 L1 0.25 0.55 0.40 M 0.085 0.150 0.110 a 0° 8° -- All Dimensions in mm Suggested Pad Layout Please see http://www.diodes.com/package-outlines.html for the latest version. SOT23 Dimensions Value (in mm) C 2.0 X 0.8 X1 1.35 Y 0.9 Y1 2.9 J K1 K GAUGE PLANE 0.25 H L M All 7° A C B D GF a X Y Y1 C
Document number: DS33440 Rev.8 - 2 8 of 8 www.diodes.com December 2017 © Diodes Incorporated ZXCT1008 IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license unde r its patent or trademark rights, nor the rights of others. Any Customer or user of th is document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diod es Incorporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising ou t of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or more United States, international or foreign patents pending. Product name s and markings noted herein may also be covered by one or more United States, international or foreign trademarks. This document is written in English but may be translated into mu ltiple languages for reference. Only the English version of this document is the final and determinative format released by Diodes Incorporated. LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided i n the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expe cted to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support d evices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety -critical, life support devices or systems, notwithstanding any devices - or systems -related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2017, Diodes Incorporated www.diodes.com