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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LM22674 датащи(PDF) 3 Page - Texas Instruments |
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LM22674 датащи(HTML) 3 Page - Texas Instruments |
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3 / 22 page  LM22674 www.ti.com SNVS590L – SEPTEMBER 2008 – REVISED APRIL 2013 Operating Ratings (1) Supply Voltage (VIN) 4.5V to 42V Junction Temperature Range -40°C to +125°C (1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond those indicated in the recommended Operating Ratings is not implied. The recommended Operating Ratings indicate conditions at which the device is functional and should not be operated beyond such conditions. Electrical Characteristics Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the junction temperature (TJ) range of -40°C to +125°C. Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at TA = TJ = 25°C, and are provided for reference purposes only. Unless otherwise specified: VIN = 12V. Symbol Parameter Conditions Min(1) Typ(2) Max(1) Units LM22674-5.0 VFB Feedback Voltage VIN = 8V to 42V 4.925/4.9 5.0 5.075/5.1 V LM22674-ADJ VFB Feedback Voltage VIN = 4.7V to 42V 1.266/1.259 1.285 1.304/1.311 V All Output Voltage Versions IQ Quiescent Current VFB = 5V 3.4 6 mA ISTDBY Standby Quiescent Current EN Pin = 0V 25 40 µA ICL Current Limit 0.56/0.62 0.7 0.84/0.9 A IL Output Leakage Current VIN = 42V, EN Pin = 0V, VSW = 0V 0.2 2 µA VSW = -1V 0.1 3 µA RDS(ON) Switch On-Resistance 0.2 0.24/0.32 Ω fO Oscillator Frequency 400 500 600 kHz TOFFMIN Minimum Off-time 100 200 300 ns TONMIN Minimum On-time 100 ns IBIAS Feedback Bias Current VFB = 1.3V (ADJ Version Only) 230 nA VEN Enable Threshold Voltage Falling 1.3 1.6 1.9 V VENHYST Enable Voltage Hysteresis 0.6 V IEN Enable Input Current EN Input = 0V 6 µA TSD Thermal Shutdown Threshold 150 °C θJA Thermal Resistance MR package, Junction to ambient 60 °C/W thermal resistance(3) (1) Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control (SQC) methods. Limits are used to calculate TI's Average Outgoing Quality Level (AOQL). (2) Typical values represent most likely parametric norms at the conditions specified and are not guaranteed. (3) The value of θJA for the SO PowerPAD exposed pad (MR) package of 60°C/W is valid if package is mounted to 1 square inch of copper. The θJA value can range from 42 to 115°C/W depending on the amount of PCB copper dedicated to heat transfer. Copyright © 2008–2013, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM22674 |
Аналогичный номер детали - LM22674 |
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Аналогичное описание - LM22674 |
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