công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
LM2743 bảng dữ liệu(PDF) 4 Page - Texas Instruments |
|
LM2743 bảng dữ liệu(HTML) 4 Page - Texas Instruments |
4 / 37 page LM2743 SNVS276F – MAY 2004 – REVISED JANUARY 2012 www.ti.com Electrical Characteristics 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 guaranteed by design, test, or statistical analysis. Symbol Parameter Conditions Min Typ Max Units VFB FB Pin Voltage VCC = 3V to 6V 0.588 0.6 0.612 V VON UVLO Thresholds Rising 2.76 V Falling 2.42 VCC = 3.3V, VSD = 3.3V 1.0 1.5 2.1 Fsw = 600kHz Operating VCC Current mA IQ_VCC VCC = 5V, VSD = 3.3V 1.0 1.7 2.1 Fsw = 600kHz Shutdown VCC Current VCC = 3.3V, VSD = 0V 110 185 µA tPWGD1 PWGD Pin Response Time VFB Rising 6 µs tPWGD2 PWGD Pin Response Time VFB Falling 6 µs ISS-ON SS Pin Source Current VSS = 0V 7 10 14 µA ISS-OC SS Pin Sink Current During Over VSS = 2.5V 90 µA Current ISEN-TH ISEN Pin Source Current Trip Point 25 40 55 µA ERROR AMPLIFIER GBW Error Amplifier Unity Gain 9 MHz Bandwidth G Error Amplifier DC Gain 106 dB SR Error Amplifier Slew Rate 3.2 V/µs IEAO EAO Pin Current Sourcing and VEAO = 1.5, FB = 0.55V 2.6 mA Sinking Capability VEAO = 1.5, FB = 0.65V 9.2 VEA Error Amplifier Output Voltage Minimum 1 V Maximum 2 V 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 4 Submit Documentation Feedback Copyright © 2004–2012, Texas Instruments Incorporated Product Folder Links: LM2743 |
Số phần tương tự - LM2743_14 |
|
Mô tả tương tự - LM2743_14 |
|
|
Link URL |
Chính sách bảo mật |
ALLDATASHEET.VN |
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không? [ DONATE ] |
Alldatasheet là | Quảng cáo | Liên lạc với chúng tôi | Chính sách bảo mật | Trao đổi link | Tìm kiếm theo nhà sản xuất All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |