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LM26400Y bảng dữ liệu(PDF) 5 Page - Texas Instruments |
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LM26400Y bảng dữ liệu(HTML) 5 Page - Texas Instruments |
5 / 33 page LM26400Y www.ti.com SNVS457D – FEBRUARY 2007 – REVISED OCTOBER 2015 6.5 Electrical Characteristics Unless otherwise stated, the following conditions apply: AVIN = PVIN = VIN = 5 V. Limits are for TJ = 25°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. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT TJ = 25°C 0.6 Feedback Loop Closed TJ = 0°C to 85°C 0.591 0.611 VFB Voltages at FB1 and FB2 Pins V TJ = 25°C 0.6 Feedback Loop V Closed TJ = –40°C to 125°C 0.585 0.617 Line Regulation of FB1 and FB2 Voltages, ΔVFB_Line Expressed as PPM Change Per Volt of VIN VIN = 3 V to 20 V 66 ppm/V Variation Current in FB1 and FB2 Pins TJ = 25°C 0.4 IFB VFB = 0.6 V nA TJ = –40°C to 125°C 250 TJ = 25°C 2.7 VIN Rising From 0 V TJ = –40°C to 125°C 2.9 VUVLO Undervoltage Lockout Threshold V TJ = 25°C 2.3 VIN Falling From 3.3 V TJ = –40°C to 125°C 2 UVLO Hysteresis TJ = 25°C 0.36 VUVLO_HYS V TJ = –40°C to 125°C 0.2 0.55 TJ = 25°C 0.52 FSW Switching Frequency MHz TJ = –40°C to 125°C 0.39 0.65 TJ = 25°C 96% DMAX Maximum Duty Cycle TJ = –40°C to 125°C 90% DMIN Minimum Duty Cycle 2% TJ = 25°C 175 HTSSOP, 2-A Drain Current TJ = –40°C to 125°C 320 RDS(ON) ON-Resistance of Internal Power MOSFET m Ω TJ = 25°C 194 WSON, 2-A Drain Current TJ = –40°C to 125°C 350 Peak Current Limit of Internal MOSFET TJ = 25°C 3 ICL A TJ = –40°C to 125°C 2.5 4.5 ISD Shutdown Current of AVIN Pin EN1 = EN2 = 0 V 2 nA Quiescent Current of AVIN Pin (both EN1 = EN2 = 5 V, FB1 = FB2 = 0.7 V, IQ 4 mA channels are enabled but not switching) TJ = –40°C to 125°C VEN_IH Input Logic High of EN1 and EN2 Pins TJ = –40°C to 125°C 2.5 V VEN_IL Input Logic Low of EN1 and EN2 Pins TJ = –40°C to 125°C 0.4 V IEN EN1 and EN2 Currents (sink or source) 5 nA Switch Leakage Current Measured at SW1 ISW_LEAK EN1 = EN2 = SWx = 0 1 µA and SW2 Pins Phase Shift Between SW1 and SW2 Rising ΔΦ Feedback Loop Closed. Continuous Conduction Mode. 170 180 19 deg Edges SSx Pin Current TJ = 25°C 16 ISS µA TJ = –40°C to 125°C 11 21 ΔISS Difference Between SS1 and SS2 Currents TJ = –40°C to 125°C 3 µA FB1 and FB2 Frequency Foldback VFB_F 0.35 V Threshold TSD Thermal Shutdown Threshold Junction temperature rises. 165 °C TSD_HYS Thermal Shutdown Hysteresis Junction temperature falls from above TSD. 15 °C Copyright © 2007–2015, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM26400Y |
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