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LM3100MHX Folha de dados(PDF) 4 Page - Texas Instruments |
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LM3100MHX Folha de dados(HTML) 4 Page - Texas Instruments |
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4 / 21 page  LM3100 SNVS421F – JANUARY 2006 – REVISED DECEMBER 2009 www.ti.com Electrical Characteristics Specifications with standard type are for TJ = 25°C only; limits in boldface type apply over the full Operating Junction Temperature (TJ) range. Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise stated the following conditions apply: VIN = 18V, VOUT = 3.3V. Symbol Parameter Conditions Min Typ Max Units Start-Up Regulator, VCC VCC VCC output voltage CCC = 680nF, no load 5.0 6.0 7.2 V VIN - VCC VIN - VCC dropout voltage ICC = 2mA 50 140 mV ICC = 20mA 350 570 IVCCL VCC current limit (1) VCC = 0V 40 65 mA VCC-UVLO VCC under-voltage lockout threshold VIN increasing 3.6 3.75 3.85 V (UVLO) VCC-UVLO-HYS VCC UVLO hysteresis VIN decreasing 130 mV tVCC-UVLO-D VCC UVLO filter delay 3 µs IIN IIN operating current No switching, VFB = 1V 0.7 1 mA IIN-SD IIN operating current, Device shutdown VEN = 0V 17 30 µA Switching Characteristics RDS-UP-ON Main MOSFET Rds(on) 0.18 0.35 Ω RDS- DN-ON Syn. MOSFET Rds(on) 0.11 0.2 Ω VG-UVLO Gate drive voltage UVLO VBST - VSW increasing 3.3 4 V Soft-start ISS SS pin source current VSS = 0.5V 6 8 9.8 µA Current Limit ICL Syn. MOSFET current limit threshold 1.9 A ON/OFF Timer tON ON timer pulse width VIN = 10V, RON = 100 kΩ 1.38 µs VIN = 30V, RON = 100 kΩ 0.47 tON-MIN ON timer minimum pulse width 200 ns tOFF OFF timer pulse width 260 ns Enable Input VEN EN Pin input threshold VEN rising 1.236 1.26 1.285 V VEN-HYS Enable threshold hysteresis VEN falling 90 mV Regulation and Over-Voltage Comparator VFB In-regulation feedback voltage VSS ≥ 0.8V 0.784 0.8 0.816 V TJ = −40°C to + 125°C VSS ≥ 0.8V 0.788 0.812 TJ = 0°C to + 125°C VFB-OV Feedback over-voltage threshold 0.894 0.920 0.940 V IFB 5 100 nA Thermal Shutdown TSD Thermal shutdown temperature TJ rising 165 °C TSD-HYS Thermal shutdown temperature TJ falling 20 °C hysteresis (1) VCC provides self bias for the internal gate drive and control circuits. Device thermal limitations limit external loading. 4 Submit Documentation Feedback Copyright © 2006–2009, Texas Instruments Incorporated Product Folder Links: LM3100 |
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