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LM20143QMHX 数据表(PDF) 5 Page - Texas Instruments |
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LM20143QMHX 数据表(HTML) 5 Page - Texas Instruments |
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5 / 36 page  LM20143, LM20143-Q1 www.ti.com SNVS528H – OCTOBER 2007 – REVISED JANUARY 2016 6.5 Electrical Characteristics Unless otherwise stated, the following conditions apply: AVIN = PVIN = VIN = 5 V. All Typical limits are for TJ = 25°C only, all Minimum and Maximum limits apply over the junction temperature (TJ) range of –40°C to 125°C (1). 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 VFB Feedback pin voltage VIN = 2.95 V to 5.5 V 0.788 0.8 0.812 V ΔVOUT/ΔIOUT Load Regulation IOUT = 100 mA to 3 A 0.08 %/A ICL Switch Current Limit Threshold VIN = 3.3 V 4.3 4.8 5.3 A RDS_ON High-Side Switch On Resistance ISW = 3.5 A 36 55 m Ω RDS_ON Low-Side Switch On Resistance ISW = 3.5 A 32 52 m Ω IQ Operating Quiescent Current Non-switching, VFB = VCOMP 3.5 6 mA ISD Shutdown Quiescent current VEN = 0 V 90 180 µA VUVLO VIN Under Voltage Lockout Rising VIN 2.45 2.7 2.95 V VUVLO_HYS VIN Under Voltage Lockout Hysteresis Falling VIN 45 100 mV VVCC VCC Voltage IVCC = 0 µA 2.45 2.7 2.95 V ISS Soft-Start Pin Source Current VSS/TRK = 0 V 2 4.5 7 µA VTRACK SS/TRK Accuracy, VSS - VFB VSS/TRK = 0.4 V –10 3 15 mV OSCILLATOR FOSCH Oscillator Frequency RT = 49.9 kΩ 1350 1500 1650 kHz FOSCL Oscillator Frequency RT = 249 kΩ 450 510 570 kHz DCMAX Maximum Duty Cycle ILOAD = 0 A 85% TON_TIME Minimum On Time 100 ns TCL_BLANK Current Sense Blanking Time After Rising VSW 80 ns ERROR AMPLIFIER AND MODULATOR IFB Feedback pin bias current VFB = 0.8 V 1 100 nA ICOMP_SRC COMP Output Source Current VFB = VCOMP = 0.6 V 80 100 µA ICOMP_SNK COMP Output Sink Current VFB = 1.0 V, VCOMP = 0.6 V 80 100 µA Gm Error Amplifier Transconductance ICOMP = ± 50 µA 450 510 600 µmho AVOL Error Amplifier Voltage Gain 2000 V/V POWER GOOD VOVP Over Voltage Protection Rising Threshold With respect to VFB 105% 108% 111% VOVP_HYS Over Voltage Protection Hysteresis With respect to VFB 2% 3% VPGTH PGOOD Rising Threshold With respect to VFB 92% 94% 96% VPGHYS PGOOD Falling Hysteresis With respect to VFB 2% 3% TPGOOD PGOOD deglitch time 16 µs IOL PGOOD Low Sink Current VPGOOD = 0.4 V 0.6 1 mA IOH PGOOD High Leakage Current VPGOOD = 5 V 5 100 nA ENABLE VIH_EN EN Pin turn-on Threshold VEN Rising 1.08 1.18 1.28 V VEN_HYS EN Pin Hysteresis 66 mV THERMAL SHUTDOWN TSD Thermal Shutdown 160 °C TSD_HYS Thermal Shutdown Hysteresis 10 °C (1) Minimum and Maximum limits are specified by test, design, or statistical correlation. Copyright © 2007–2016, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM20143 LM20143-Q1 |
类似零件编号 - LM20143QMHX |
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类似说明 - LM20143QMHX |
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