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UC2842AD8 from TI, Texas Instruments 18311pcs , SOP-8,Current Mode PWM Controller
Partno Mfg Dc Qty Available
UC2842AD8 TI N/a 18311
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UC2842AD8 1pcs,Current Mode PWM Controller
Block Diagram... 1011.8 Glossary. 257.3 Feature Description.... 1012 Mechanical, Packaging, and Orderable7.4 Device Functional Modes.... 13Information..... 262 Submit Documentation Feedback Copyright 1994–2017, Texas Instruments IncorporatedProduct Folder Links: UC1842A UC1843A UC1844A UC1845A UC2842A UC2843A UC2844A UC2845A UC3842AUC3843A UC3844A UC3845AUC1842A,UC1843A,UC1844A,UC1845AUC2842A,UC2843A,UC2844A,UC2845AUC3842A,UC3843A,UC3844A,UC3845Afeatures: startup current• Automatic Feedforward Compensationis less than 0.5 mA, oscillator discharge is trimmed to• Pulse-by-Pulse Current Limiting8.3 mA, and during UVLO, the output stage can sink• Enhanced Load Response Characteristicsat least 10 mA at less than 1.2 V for V over 5 V.CC• Undervoltage Lockout With Hysteresis(1)Device Information• Double Pulse SuppressionPART NUMBER PACKAGE BODY SIZE (NOM)• High-Current Totem Pole OutputCDIP (8) 6.67 mm × 9.60 mmUC1842A, UC1843A,• Internally-Trimmed Bandgap ReferenceUC1844A, UC1845ALCCC (20) 8.89 mm × 8.89 mm• Up to 500-kHz OperationUC2843A PLCC (20) 8.96 mm × 8.96 mm• Create a Custom Design Using the UCx84xA WithPDIP (8) 6.35 mm × 9.81 mm®the WEBENCH Power Designer UC2842A, UC2843A,SOIC (8) 3.91 mm × 4.90 mmUC2844A, UC2845A,UC3842A, UC3843A,SOIC (14) 3.91 mm × 8.65 mm2 ApplicationsUC3844A, UC3845ASOIC (16) 7.50 mm × 10.30 mm• Switch Mode Power Supplies (SMPS)(1) For all available packages, see the orderable addendum at• DC-DC Convertersthe end of the data sheet.• Power ModulesDevice Comparison Table• Industrial PSUMAX DUTY• Battery Operated PSUDEVICE UVLO ON UVLO OFFCYCLEUC1842A 16 V 10 V <100%UC1843A 8.4 V 7.6 V <100%UC1844A 16 V 10 V <50%UC1845A 8.4 V 7.6 V <50%Simplified Application DiagramVINVCC OUTPUTVREF ISENSEUC2843AFBRT/CTGND COMPCopyright 2017, Texas Instruments Incorporated1An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,intellectual property matters and other important disclaimers. PRODUCTION DATA.UC1842A,UC1843A,UC1844A,UC1845AUC2842A,UC2843A,UC2844A,UC2845AUC3842A,UC3843A,UC3844A,UC3845ASLUS224F–SEPTEMBER 1994–REVISED OCTOBER 2017 Features, Application and Implementation and Device and DocumentationSupport........ 1• Added copyright information to the Simplified Application Diagram ..... 1• Changed operating free-air temperature of the UC284xA changed from 125°C to 85°C. ....... 6• Changed operating free-air temperature of the UC384xA changed from -40°C to 0°C. . 6• Changed operating free-air temperature of the UC384xA changed from 85°C to 70°C. 6• Changed the frequency (f) calculation to the correct equation... 13• Changed the C equation to the corrected equation. ... 17OUT• Changed the L equation to the corrected equation....... 18PM• Added G (f) definition and equation..... 19CO• Changed the f equation to the corrected equation...... 19RHPzChanges from Revision D (July 2011) to Revision E Page• Added Applications section, Device Information table, Pin Configuration and Functions section, Specificationssection, Detailed Description section, Application and Implementation section, Power Supply Recommendationssection, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and OrderableInformation section........ 1• Deleted Ordering Information Table; see POA at the end of the datasheet.. 1Changes from Revision C (August 2010) to Revision D Page• Changed Absolute Maximum Ratings.. 611 Device and Documentation Support........ 246.2 ESD Ratings........ 611.1 Device Support 246.3 Recommended Operating Conditions..... 611.2 Documentation Support.... 246.4 Thermal Information..... 711.3 Related Links.. 256.5 Features... 1 8 Application and Implementation...... 148.1 Application Information........ 142 Applications..... 18.2 Typical Application..... 143 Description....... 19 Power Supply Recommendations.... 214 Revision History........ 310 Layout.... 225 Pin Configuration and Functions....... 410.1 Layout Guidelines.... 226 Specifications... 610.2 Layout Example....... 236.1 Absolute

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