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LM3674 Scheda tecnica(PDF) 4 Page - Texas Instruments |
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LM3674 Scheda tecnica(HTML) 4 Page - Texas Instruments |
4 / 22 page LM3674 SNVS405E – DECEMBER 2005 – REVISED SEPTEMBER 2006 www.ti.com Electrical Characteristics (1) (2) (3) Limits in standard typeface are for TJ = 25°C. Limits in boldface type apply over the full operating junction temperature range ( −30°C ≤ TJ ≤ 125°C). Unless otherwise noted, specifications apply to the LM3674 with VIN = EN = 3.6V Symbol Parameter Condition Min Typ Max Units VFB Feedback Voltage (4) (5) IO = 10mA -4 +4 % Line Regulation 2.7V ≤ VIN ≤ 5.5V 0.083 %/V IO = 100 mA Load Regulation 100 mA ≤ IO ≤ 600 mA 0.0010 %/mA VIN = 3.6V VREF Internal Reference Voltage (Note 7) 0.5 V ISHDN Shutdown Supply Current EN = 0V 0.01 1 µA IQ DC Bias Current into VIN No load, device is not switching 300 600 µA (FB=0V) RDSON (P) Pin-Pin Resistance for PFET ISW = 200mA 380 500 m Ω RDSON (N) Pin-Pin Resistance for NFET ISW = 200mA 250 400 m Ω ILIM Switch Peak Current Limit Open Loop (Note 8) 830 1020 1200 mA VIH Logic High Input 1.0 V VIL Logic Low Input 0.4 V IEN Enable (EN) Input Current 0.01 1 µA FOSC Internal Oscillator Frequency PWM Mode 1.6 2 2.6 MHz (1) All voltages are with respect to the potential at the GND pin. (2) Min and Max limits are guaranteed by design, test or statistical analysis. Typical numbers are not guaranteed, but do represent the most likely norm. (3) The parameters in the electrical characteristic table are tested at VIN = 3.6V unless otherwise specified. For performance over the input voltage range refer to datasheet curves. (4) ADJ configured to 1.5V output. (5) For VOUT less than 2.5V, VIN = 3.6V, for VOUT greater than or equal to 2.5V, VIN = VOUT +1. Dissipation Rating Table θJA TA ≤ 25°C (Power Rating) TA = 60°C (Power Rating) TA = 85°C (Power Rating) 250°C/W (2 layer board) 400mW 260mW 160mW 130°C/W (4 layer board) 770mW 500mW 310mW 4 Submit Documentation Feedback Copyright © 2005–2006, Texas Instruments Incorporated Product Folder Links: LM3674 |
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