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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LM5145 датащи(PDF) 8 Page - Texas Instruments |
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LM5145 датащи(HTML) 8 Page - Texas Instruments |
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8 / 60 page  5.5 Electrical Characteristics (continued) TJ = –40°C to 150°C. Typical values are at TJ = 25°C and VIN = 12V (unless otherwise noted). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VFPWM-LO FPWM low detection threshold 0.8 V VZC-PFM Zero-cross threshold (LO off) in PFM –5.5 mV VZC-FPWM Zero-cross threshold (LO off) in FPWM 30 mV tPFM-FILTER SYNCIN to PFM mode 13 72 µs SWITCHING FREQUENCY (RT) VRT RT pin regulation voltage 10kΩ < RRT < 100kΩ 1 V FSW2-VCC Switching frequency 2, RT to VCC RT = 10.1kΩ to VCC 2.2 MHz FSW1 Switching frequency 1 RRT = 53kΩ to AGND 396 440 484 kHz FSW2 Switching frequency 2 RRT = 10.1kΩ to AGND 2.2 MHz FSW3 Switching frequency 3 RRT = 237kΩ to AGND 100 kHz SLOPE1 Internal slope compensation 1 RRT = 10.1kΩ 1000 mV/µs tON(min) Minimum on-time VHO – VSW = VCBOOT – VSW 25 ns tOFF(min) Minimum off-time VHO – VSW = 0V 80 ns POWER GOOD (PG) VPG-OV PG OV threshold level Rising with respect to the regulation voltage 107 110 113.5 % VPG-UV PG UV threshold level Falling with respect to the regulated voltage 89 92 95 % VPG-UV-HYST PG UV hysteresis Rising with respect to the regulated output 3.6 % VPG-OV-HYST PG OV hysteresis Rising with respect to the regulation voltage 3.6 % tOV-DLY PG OV filter time VOUT rising 25 µs tUV-DLY PG UV filter time VOUT falling 25 µs VPG-OL PG voltage Open collector, IPG = 4mA 0.04 0.14 0.8 V STARTUP (Soft Start) tSS-INT Internal fixed soft-start time 1.5 3 4.2 ms BOOT CIRCUIT (CBOOT) VBOOT-DROP Internal diode forward drop ICBOOT = 20mA, VCC to CBOOT 0.8 V IBOOT CBOOT to SW quiescent current, not switching VEN = 5V, VCBOOT – VSW = 5V 9 µA VBOOT-SW-UV-R CBOOT to SW UVLO rising threshold VCBOOT – VSW rising 2.9 V VBOOT-SW-UV-F CBOOT to SW UVLO falling threshold VCBOOT – VSW falling 2.6 V VBOOT-SW-UV-HYS CBOOT to SW UVLO hysteresis 330 mV HIGH-SIDE GATE DRIVER (HO) VHO-HIGH HO high-state output voltage IHO = –100mA, VHO-HIGH = VCBOOT – VHO 120 mV VHO-LOW HO low-state output voltage IHO = 100mA 60 mV IHO-SRC HO peak source current VHO = VSW = 0V, VCBOOT = VVCC = 5V 1.65 A IHO-SINK HO peak sink current VVCC = 5V 2.4 A LOW-SIDE GATE DRIVER (LO) VLO-HIGH LO high-state output voltage ILO = –100mA 124 mV VLO-LOW LO low-state output voltage ILO = 100mA 60 mV ILO-SRC LO peak source current VLO = VSW = 0V, VVCC = 5V 1.65 A ILO-SINK LO peak sink current VVCC = 5V 2.4 A ADAPTIVE DEADTIME CONTROL tDEAD1 HO off to LO on deadtime 18 ns tDEAD2 LO off to HO on deadtime 22 ns INTERNAL HICCUP MODE HICDLY Hiccup mode activation delay VISNS – VVOUT > 60mV 512 cycles HICCYCLES HICCUP mode fault VISNS – VVOUT > 60mV 16384 cycles OVERCURRENT PROTECTION VCS-TH Current limit threshold Measured from ISNS to VOUT 52 60 68 mV LM25139 SLVSJ80 – OCTOBER 2025 www.ti.com 8 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated Product Folder Links: LM25139 |
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