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LM25061 bảng dữ liệu(PDF) 4 Page - Texas Instruments |
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LM25061 bảng dữ liệu(HTML) 4 Page - Texas Instruments |
4 / 29 page LM25061 SNVS611E – FEBRUARY 2011 – REVISED MARCH 2013 www.ti.com Electrical Characteristics (continued) Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the junction temperature (TJ) range of -40°C to +85°C. Minimum and Maximum limits are ensured through test, design, or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise stated the following conditions apply: VIN = 12V. Symbol Parameter Conditions Min. Typ. Max. Units Gate Control (GATE pin) IGATE Source current Normal Operation -27 -20 -13 µA Sink current UVLO = 1V 1.5 2 2.7 mA VIN - SENSE = 150 mV or VIN < 160 260 375 mA POR, VGATE = 5V VGATE Gate output voltage in normal operation GATE voltage with respect to ground 18 19.5 21 V Current Limit VCL Threshold voltage VIN-SENSE voltage 45 50 55 mV tCL Response time VIN-SENSE stepped from 0 mV to 15 µs 80 mV ISENSE SENSE input current Enabled, SENSE = OUT 23 µA Disabled, OUT = 0V 12 Enabled, OUT = 0V 62 Circuit Breaker VCB Threshold voltage VIN - SENSE 75 95 110 mV tCB Response time VIN - SENSE stepped from 0 mV to 0.19 0.36 µs 150 mV, time to GATE low, no load Timer (TIMER pin) VTMRH Upper threshold 1.60 1.72 1.85 V VTMRL Lower threshold Restart cycles (LM25061-2) 0.9 1.0 1.1 V End of 8th cycle (LM25061-2) 0.3 V Re-enable Threshold (LM25061-1) 0.3 V ITIMER Insertion time current -7.5 -5.5 -3.5 µA Sink current, end of insertion time TIMER pin = 2V 1.5 2 2.5 mA Fault detection current -110 -80 -50 µA Fault sink current 1.6 2.5 3.4 µA DCFAULT Fault Restart Duty Cycle LM25061-2 only 0.67 % tFAULT Fault to GATE low delay TIMER pin reaches the upper 20 µs threshold FB Pin FBTH FB threshold UVLO = 2V 1.145 1.17 1.195 V FBHYS FB hysteresis current FB = 2V -28 -22 -17 µA FBDEL FB delay Delay to PGD high 100 ns Delay to PGD low 110 FBBIAS FB bias current FB = 1V 1 µA Power Good (PGD pin) PGDVOL Output low voltage ISINK = 2 mA 15 30 mV PGDIOH Off leakage current VPGD = 17V 1 µA 4 Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated Product Folder Links: LM25061 |
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