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TPS611781 датащи(PDF) 6 Page - Texas Instruments |
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TPS611781 датащи(HTML) 6 Page - Texas Instruments |
6 / 40 page 6 TPS61178, TPS611781 SLVSDA7 – FEBRUARY 2017 www.ti.com Product Folder Links: TPS61178 TPS611781 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Electrical Characteristics (continued) VIN = 2.7 V to 14 V and VOUT = 16 V, TJ = - 40 °C to 125 °C , Typical values are at TJ = 25 °C, unless otherwise noted. PARAMETER TEST CONDITION MIN TYP MAX UNIT EN / SYNC LOGIC VEN_H EN Logic high threshold 1.2 V VEN_L EN Logic Low threshold 0.4 V REN EN pulldown resistor 800 kΩ VSYNC_H SYNC clock high threshold 1.2 V VSYNC_L SYNC clock low threshold 0.4 V ERROR AMPLIFIER VCOMPH COMP output high voltage High threshold, VFB = VREF - 200 mV, RLIMIT = 80.6 kΩ, Minimum On time 1.9 V VCOMPL COMP output low voltage Low threshold, VFB = VREF + 200 mV, RLIMIT = 80.6 kΩ, Minimum On time 1.25 V GmEA Error amplifier trans conductance VCOMP = 1.5 V 195 µS ISINK Comp pin sink current VFB = VREF + 200 mV, VCOMP = 1.5 V 20 µA ISOURCE Comp pin source current VFB = VREF –200 mV, VCOMP = 1.5 V 20 µA 7.6 Timing Requirements VIN = 2.7 V to 14 V and VOUT = 16 V, TJ = - 40 °C to 125 °C , Typical values are at TJ = 25 °C, unless otherwise noted. PARAMETER CONDITION MIN TYP MAX UNIT CURRENT LIMIT tHIC_OFF Waiting time for restart in hiccup mode 90 ms SOFT START tSTARTUP Startup time 3.2 ms tPRE_CHARG Pre-charge time 1.8 2.6 3.4 ms PROTECTION tSD_R Thermal shutdown rising threshold TJ rising 150 °C tSD_F Thermal shutdown falling threshold TJ falling 130 °C 7.7 Switching Characteristics VIN = 2.7 V to 14 V and VOUT = 16 V, TJ = - 40 °C to 125 °C , Typical values are at TJ = 25 °C, unless otherwise noted. PARAMETER CONDITION MIN TYP MAX Unit SWITCHING FREQUENCY / SYNC RFREQ = 342 kΩ 400 500 600 kHz fSW Switching frequency RFREQ = 842 kΩ 160 200 240 kHz RFREQ = 75 kΩ 1900 2200 2500 kHz tON_min Minimum on time 105 135 ns tOFF_min Minimum off time 140 180 ns fSYNC_MIN Minimum external frequency 190 200 210 kHz fSYNC_MAX Maximum external frequency 2090 2200 2310 kHz GATE DRIVER FOR LOAD DISCONNECT IGD_SINK Driver current for the external FET 55 µA |
Аналогичный номер детали - TPS611781 |
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Аналогичное описание - TPS611781 |
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