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LM2743MTC Datasheet(PDF) 4 Page - Texas Instruments |
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LM2743MTC Datasheet(HTML) 4 Page - Texas Instruments |
4 / 37 page LM2743 SNVS276G – APRIL 2004 – REVISED MARCH 2013 www.ti.com Electrical Characteristics (1) (continued) VCC = 3.3V unless otherwise indicated. Typicals and limits appearing in plain type apply for TA= TJ= 25°C. Limits appearing in boldface type apply over full Operating Temperature Range. Datasheet min/max specification limits are specified by design, test, or statistical analysis. Symbol Parameter Conditions Min Typ Max Units GATE DRIVE IQ-BOOT BOOT Pin Quiescent Current VBOOT = 12V, VSD = 0 18 90 µA RHG_UP High-Side MOSFET Driver Pull-Up VBOOT = 5V @ 350mA Sourcing 3 Ω ON resistance RHG_DN High-Side MOSFET Driver Pull- HG = 5V @ 350mA Sourcing 2 Ω Down ON resistance RLG_UP Low-Side MOSFET Driver Pull-Up VBOOT = 5V @ 350mA Sourcing 3 Ω ON resistance RLG_DN Low-Side MOSFET Driver Pull- LG = 5V @ 350mA Sourcing 2 Ω Down ON resistance OSCILLATOR RFADJ = 702.1 kΩ 50 RFADJ = 98.74 kΩ 300 fSW PWM Frequency kHz RFADJ = 45.74 kΩ 475 600 725 RFADJ = 24.91 kΩ 1000 D Max High-Side Duty Cycle fSW = 300kHz 80 % fSW = 600kHz 76 fSW = 1MHz 73 LOGIC INPUTS AND OUTPUTS V STBY-IH Standby High Trip Point VFB = 0.575V, VBOOT = 3.3V, VSD 1.1 V Rising V STBY-IL Standby Low Trip Point VFB = 0.575V, VBOOT = 3.3V, VSD 0.232 V Falling V SD-IH SD Pin Logic High Trip Point VSD Rising 1.3 V V SD-IL SD Pin Logic Low Trip Point VSD Falling 0.8 V VPWGD-TH-LO PWGD Pin Trip Points FB Falling 0.408 0.434 0.457 V VPWGD-TH-HI PWGD Pin Trip Points FB Rising 0.677 0.710 0.742 V VPWGD-HYS PWGD Hysteresis FB Falling 60 mV FB Rising 90 4 Submit Documentation Feedback Copyright © 2004–2013, Texas Instruments Incorporated Product Folder Links: LM2743 |
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