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LM25007 bảng dữ liệu(PDF) 4 Page - Texas Instruments |
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LM25007 bảng dữ liệu(HTML) 4 Page - Texas Instruments |
4 / 17 page LM25007 SNVS401B – JANUARY 2006 – REVISED FEBRUARY 2008 www.ti.com Electrical Characteristics (1) Specifications with standard type are for TJ = 25°C only; limits in boldface type apply over the full Operating Junction Temperature (TJ) range. Minimum and Maximum limits are guaranteed 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 = 24V, RON = 200kΩ. . Symbol Parameter Conditions Min Typ Max Units Startup Regulator VCC Reg VCC Regulator Output 6.6 7 7.4 V VCC Current Limit (2) 11 mA VCC Supply VCC undervoltage Lockout Voltage 6.3 V (VCC increasing) VCC Undervoltage Hysteresis 206 mV VCC UVLO Delay (filter) 3 µs Operating Current (ICC) Non-Switching, FB = 3V 500 675 µA Shutdown/Standby Current RON/SD = 0V 70 150 µA Switch Characteristics Buck Switch Rds(on) ITEST = 200mA, 0.74 1.34 Ω VBST −VSW = 6.3V (3) Gate Drive UVLO (VBST – VSW) Rising 3.4 4.5 5.5 V Gate Drive UVLO Hysteresis 400 mV Current Limit Current Limit Threshold 535 725 900 mA Current Limit Response Time Iswitch Overdrive = 0.1A Time 225 ns to Switch Off OFF time generator (test 1) FB=0V, RCL = 100K 17 µs OFF time generator (test 2) FB=2.3V, RCL = 100K 2.65 µs On Time Generator TON -1 Vin = 10V 2.15 2.77 3.5 µs Ron = 200K TON -2 Vin = 40V 450 615 810 ns Ron = 200K Remote Shutdown Threshold Rising 0.45 0.7 1.1 V Remote Shutdown Hysteresis 40 mV Minimum Off Time Minimum Off Timer FB = 0V 300 ns Regulation and OV Comparators FB Reference Threshold Internal reference 2.445 2.5 2.550 V Trip point for switch ON FB Over-Voltage Threshold Trip point for switch OFF 2.875 V FB Bias Current 100 nA Thermal Shutdown Tsd Thermal Shutdown Temp. 165 °C Thermal Shutdown Hysteresis 25 °C Thermal Resistance θJA Junction to Ambient MUA Package 200 °C/W SDC Package 40 °C/W (1) All limits are guaranteed. All electrical characteristics having room temperature limits are tested during production with TA = TJ = 25°C. All hot and cold limits are guaranteed by correlating the electrical characteristics to process and temperature variations and applying statistical process control. (2) The VCC output is intended as a self bias for the internal gate drive power and control circuits. Device thermal limitations limit external loading. (3) For devices procured in the LLP-8 package the Rds(on) limits are guaranteed by design characterization data only. 4 Submit Documentation Feedback Copyright © 2006–2008, Texas Instruments Incorporated Product Folder Links: LM25007 |
Số phần tương tự - LM25007_14 |
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Mô tả tương tự - LM25007_14 |
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