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LM3100MH Arkusz danych(PDF) 4 Page - National Semiconductor (TI) |
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LM3100MH Arkusz danych(HTML) 4 Page - National Semiconductor (TI) |
4 / 15 page Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. VIN, RON to GND -0.3V to 40V SW to GND -0.3V to 40V SW to GND (Transient) -2V (< 100ns) VIN to SW -0.3V to 40V BST to SW -0.3V to 7V All Other Inputs to GND -0.3V to 7V ESD Rating (Note 2) Human Body Model ±2kV Storage Temperature Range -65˚C to +150˚C Junction Temperature (T J) 150˚C Operating Ratings (Note 1) Supply Voltage Range (VIN) 4.5V to 36V Junction Temperature Range (T J) −40˚C to + 125˚C Thermal Resistance ( θ JC) (Note 3) 6.5˚C/W Electrical Charateristics Specifications with standard type are for T J = 25˚C only; limits in boldface type ap- ply over the full Operating Junction Temperature (T J) range. Minimum and Maximum limits are guaranteed through test, de- sign, or statistical correlation. Typical values represent the most likely parametric norm at T J = 25˚C, and are provided for ref- erence purposes only. Unless otherwise stated the following conditions apply: V IN = 18V, VOUT = 3.3V. Symbol Parameter Conditions Min Typ Max Units Start-Up Regulator, V CC V CC V CC output voltage C CC = 680nF, no load 5.0 6.0 7.2 V V IN -VCC V IN -VCC dropout voltage I CC = 2mA 50 140 mV I CC = 20mA 350 570 I VCCL V CC current limit (Note 4) V CC =0V 40 65 mA V CC-UVLO V CC under-voltage lockout threshold (UVLO) V IN increasing 3.6 3.75 3.85 V V CC-UVLO-HYS V CC UVLO hysteresis V IN decreasing 130 mV t VCC-UVLO-D V CC UVLO filter delay 3 µs I IN I IN operating current No switching, V FB = 1V 0.7 1 mA I IN-SD I IN operating current, Device shutdown V EN =0V 17 30 µA Switching Characteristics R DS-UP-ON Main MOSFET Rds(on) 0.18 0.35 Ω R DS- DN-ON Syn. MOSFET Rds(on) 0.11 0.2 Ω V G-UVLO Gate drive voltage UVLO V BST -VSW increasing 3.3 4 V Soft-start I SS SS pin source current V SS = 0.5V 6 8 9.8 µA Current Limit I CL Syn. MOSFET current limit threshold 1.9 A ON/OFF Timer t ON ON timer pulse width V IN = 10V, RON = 100 k Ω 1.38 µs V IN = 30V, RON = 100 k Ω 0.47 t ON-MIN ON timer minimum pulse width 200 ns t OFF OFF timer pulse width 260 ns Enable Input V EN EN Pin input threshold V EN rising 1.236 1.26 1.285 V V EN-HYS Enable threshold hysteresis V EN falling 90 mV Regulation and Over-Voltage Comparator V FB In-regulation feedback voltage V SS ≥ 0.8V T J = −40˚C to + 125˚C 0.784 0.8 0.816 V V SS ≥ 0.8V T J = 0˚C to + 125˚C 0.788 0.812 V FB-OV Feedback over-voltage threshold 0.894 0.920 0.940 V I FB 5 100 nA Thermal Shutdown T SD Thermal shutdown temperature T J rising 165 ˚C www.national.com 4 |
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