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LM25010 数据表(PDF) 4 Page - Texas Instruments |
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LM25010 数据表(HTML) 4 Page - Texas Instruments |
4 / 27 page LM25010 SNVS419C – DECEMBER 2005 – REVISED DECEMBER 2008 www.ti.com Electrical Charateristics 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. See (1). Symbol Parameter Conditions Min Typ Max Units VCC Regulator VCCReg VCC regulated output 6.6 7 7.4 Volts VIN - VCC ICC = 0 mA, FS ≤ 200 kHz, 6.0V ≤ VIN ≤ 8.5V 100 mV VCC Bypass Threshold VIN Increasing 8.9 V VCC Bypass Hysteresis VIN Decreasing 260 mV VCC output impedance VIN = 6.0V 55 Ω (0 mA ≤ ICC ≤ 5 mA) VIN = 8.0V 50 VIN = 24V 0.21 VCC current limit (Note 3) VIN = 24V, VCC = 0V 15 mA UVLOVcc VCC under-voltage lock-out VCC Increasing 5.25 V threshold UVLOVCC hysteresis VCC Decreasing 180 mV UVLOVCC filter delay 100 mV overdrive 3 µs IIN operating current Non-switching, FB = 3V 645 920 µA IIN shutdown current RON/SD = 0V 90 170 µA Switch Characteristics RDS(on) Buck Switch RDS(on) @ fSW = 200 TJ ≤ 125°C 0.35 0.80 Ω mA TJ ≤ 150°C 0.85 UVLOGD Gate Drive UVLO VBST - VSW Increasing 1.7 3.0 4.0 V UVLOGD hysteresis 400 mV SOFT-START Pin ISS Internal current source 8.0 11.5 15 µA Current Limit ILIM Threshold Current out of ISEN 1 1.25 1.5 A Resistance from ISEN to SGND 130 m Ω Response time 150 ns On Timer, RON/SD Pin tON - 1 On-time VIN = 10V, RON = 200 kΩ 2.1 2.75 3.4 µs tON - 2 On-time VIN = 42V, RON = 200 kΩ 500 695 890 ns Shutdown threshold Voltage at RON/SD rising 0.30 0.7 1.05 V Threshold hysteresis 40 mV Off Timer tOFF Minimum Off-time 260 ns Regulation and Over-Voltage Comparators (FB Pin) VREF FB regulation threshold TJ ≤ 125°C 2.445 2.50 2.550 V TJ ≤ 150°C 2.435 FB over-voltage threshold 2.9 V FB bias current 1 nA Thermal Shutdown TSD Thermal shutdown temperature 175 °C Thermal shutdown hysteresis 20 °C Thermal Resistance θJA Junction to Ambient, 0 LFPM Air SDC Package 40 °C/W Flow MXA Package 40 (1) Typical specifications represent the most likely parametric norm at 25°C operation. 4 Submit Documentation Feedback Copyright © 2005–2008, Texas Instruments Incorporated Product Folder Links: LM25010 |
类似零件编号 - LM25010 |
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类似说明 - LM25010 |
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