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LM5170QPHPTQ1 bảng dữ liệu(PDF) 7 Page - Texas Instruments |
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LM5170QPHPTQ1 bảng dữ liệu(HTML) 7 Page - Texas Instruments |
7 / 67 page 7 LM5170-Q1 www.ti.com SNVSAQ6 – NOVEMBER 2016 Product Folder Links: LM5170-Q1 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Recommended Operating Conditions (continued) over operating free-air temperature range (unless otherwise noted) (1) MIN NOM MAX UNIT (2) High junction temperatures degrade operating lifetime. Operating lifetime is de-rated for junction temperature greater than 125°C. TJ Operating junction temperature(2) –40 150 °C FOSC Oscillator frequency 50 500 kHz FEX_CLK Synchronization to external clock frequency (minimal 50 kHz) 0.8 × FOSC 1.2 × FOSC kHz tDT Programmable dead time 15 200 ns ISETD PWM frequency 1 100 kHz SYNCIN pulse width 100 500 ns (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. 6.4 Thermal Information THERMAL METRIC(1) LM5170-Q1 UNIT PHP (TQFP) 48 PINS RθJA Junction-to-ambient thermal resistance 29.8 °C/W RθJC(top) Junction-to-case (top) thermal resistance 14.3 °C/W RθJB Junction-to-board thermal resistance 5.3 °C/W ψJT Junction-to-top characterization parameter 0.2 °C/W ψJB Junction-to-board characterization parameter 5.4 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance 0.6 °C/W (1) All minimum and maximum limits are specified by correlating the electrical characteristics to process and temperature variations and applying statistical process control. (2) Minimum and maximum limits apply over the –40°C to 125°C junction temperature range. (3) Typical values correspond to TJ = 25°C. 6.5 Electrical Characteristics FOSC = 100 kHz; VVCC = 10 V; VVIN = VHV-Port = 48 V and VLV-Port = 12 V, unless otherwise stated. (1) PARAMETER TEST CONDITIONS MIN(2) TYP(3) MAX(2) UNIT VIN SUPPLY (VIN, VINX) ISHUTDOWN VIN pin current in shutdown mode VUVLO = 0 V 10 µA ISTANDBY VIN pin current, no switching VVCC > 9 V, VUVLO > 2.5 V, VEN1 = VEN2 = 0 V 1 mA VIN to VINX disconnect switch VUVLO < 1 V or VVCC < 7.5 V 5 MΩ VIN to VINX disconnect switch VUVLO > 2.6 V, VVCC > 9 V 100 Ω VCC AND VCCA BIAS SUPPLIES VCCUVLO VCC undervoltage detection VVCC falling 7.6 8 8.3 V VCCHYS VCC UVLO hysteresis VVCC rising 8.1 8.5 8.9 V IVCC_SD VCC sink current in shutdown mode VUVLO = 0 V 20 µA IVCC_SB VCC sink current in standby: no switching VUVLO > 2.6 V, VEN1 = VEN2 = 0 V 10 mA MASTER ON/OFF CONTROL (UVLO) VUVLO_TH UVLO release threshold UVLO voltage rising 2.4 2.5 2.6 V IHYS UVLO hysteresis current UVLO source current when VUVLO > 2.6 V 21 25 29 µA VSD UVLO shutdown threshold (IC shutdown) UVLO voltage falling 1 1.25 1.5 V UVLO shutdown release UVLO voltage rising above VSD 0.15 0.25 0.35 V tUVLO UVLO glitch filter time UVLO voltage falling 2.5 µs UVLO internal pulldown current 1 µA CHANNEL ENABLE INPUTS EN1 AND EN2 VIL Enable input low state Disabled the driver outputs 1 V VIH Enable input high state Enable the driver outputs 2 V |
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