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LM3488 Folha de dados(PDF) 4 Page - Texas Instruments |
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LM3488 Folha de dados(HTML) 4 Page - Texas Instruments |
4 / 33 page LM3488 LM3488-Q1 SNVS089M – JULY 2000 – REVISED MARCH 2013 www.ti.com Electrical Characteristics (continued) Specifications in Standard type face are for TJ = 25°C, and in bold type face apply over the full Operating Temperature Range. Unless otherwise specified, VIN = 12V, RFA = 40kΩ Symbol Parameter Conditions Typical Limit Unit VOVP(HYS) Output Over-Voltage Protection VCOMP = 1.4V 60 mV Hysteresis(5) 20 mV(min) 110 mV(max) Gm Error Ampifier Transconductance VCOMP = 1.4V 800 µmho IEAO = 100µA (Source/Sink) 600/ 365 µmho (min) 1000/ 1265 µmho (max) AVOL Error Amplifier Voltage Gain VCOMP = 1.4V 38 V/V IEAO = 100µA (Source/Sink) 26 V/V (min) 44 V/V (max) IEAO Error Amplifier Output Current (Source/ Source, VCOMP = 1.4V, VFB = 0V 110 µA Sink) 80/ 50 µA (min) 140/ 180 µA (max) Sink, VCOMP = 1.4V, VFB = 1.4V −140 µA −100/ −85 µA (min) −180/ −185 µA (max) VEAO Error Amplifier Output Voltage Swing Upper Limit 2.2 V VFB = 0V 1.8 V(min) COMP Pin = Floating 2.4 V(max) Lower Limit 0.56 V VFB = 1.4V 0.2 V(min) 1.0 V(max) TSS Internal Soft-Start Delay VFB = 1.2V, VCOMP = Floating 4 msec Tr Drive Pin Rise Time Cgs = 3000pf, VDR = 0 to 3V 25 ns Tf Drive Pin Fall Time Cgs = 3000pf, VDR = 0 to 3V 25 ns VSD Shutdown and Synchronization signal Output = High 1.27 V threshold (6) 1.4 V (max) Output = Low 0.65 V 0.3 V (min) ISD Shutdown Pin Current VSD = 5V −1 µA VSD = 0V +1 IFB Feedback Pin Current 15 nA TSD Thermal Shutdown 165 °C Tsh Thermal Shutdown Hysteresis 10 °C θJA Thermal Resistance VSSOP-8 Package 200 °C/W (6) The FA/SYNC/SD pin should be pulled to VIN through a resistor to turn the regulator off. 4 Submit Documentation Feedback Copyright © 2000–2013, Texas Instruments Incorporated Product Folder Links: LM3488 LM3488-Q1 |
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