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LM10500 データシート(PDF) 7 Page - Texas Instruments |
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LM10500 データシート(HTML) 7 Page - Texas Instruments |
7 / 40 page LM10500 www.ti.com SNVS630G – SEPTEMBER 2009 – REVISED MARCH 2013 General Electrical Characteristics (1) (2) (continued) Specifications with standard typeface are for TJ = 25 °C, and those in boldface type apply over the full Operating Temperature Range (TJ = −40 °C to 125 °C). Unless otherwise specified, VPVIN = VAVIN = 12 V, VOUT = 1.2 V. Symbol Parameter Remarks Min Typ Max Unit Error Amplifier Gm VFB = 1.0 V, VCOMP = 0.5 V 2400 µA/V Transconductance Error Amplifier Voltage AVOL 65 dB Gain Output voltage rising threshold, % of VIH-OVP OVP Tripping Threshold 103.5 109.5 115 VOUT % VHYST-OVP OVP Hysteresis Window % of VOUT -4.3 AVIN UVLO Rising VUVLO-HI-AVIN 2.84 2.93 2.987 V Threshold AVIN UVLO VUVLO-LO-AVIN 2.66 2.73 2.83 V FallingThreshold AVIN UVLO Hysteresis VUVLO-HYS-AVIN 195 mV Window Internal LDO1 Output VVDD1 Measured At VDD1 Pin, 1 k Ω Load 4.88 V Voltage Recommended Bypass COUT-VDD1 Ceramic Capacitor 1 µF Capacitance to VDD1 Pin VDD1 Pin Short Circuit IShort-VDD1 31 mA Current Internal LDO2 Output VVDD2 Measured At VDD2 Pin, 1 k Ω Load 2.47 V Voltage Recommended Bypass COUT-VDD2 Ceramic Capacitor 100 nF Capacitance to VDD2 Pin VDD2 Pin Short Circuit IShort-VDD2 47 mA Current CBOOT Diode Forward Measured Between VDD1 and CBOOT VFCBOOT-d 0.76 V Voltage @ 10 mA ICBOOT CBOOT Leakage Current VCBOOT = 5.5 V, VEN = 0 V 0.65 µA Measured From EN Rising Edge to TStartup-Delay Soft Start Delay Time The Beginning of Internal Soft-Start 160 µs Ramp From 10% to 90% VFB, VFB = 0.8 V 1.9 3.4 5.3 Internal Soft-Start Ramping TSoft-Start ms Time From 10% to 90% VFB, VFB = 1.0 V 2.4 4.3 6.2 OSCILLATOR Nominal Switching FOSC-nom RFRQ = 61.9 kΩ 0.025% 695 750 795 Frequency Maximum Switching FOSC-MAX RFRQ = 28.4 kΩ 1500 kHz Frequency Minimum Switching FOSC-MIN RFRQ = 167.5 kΩ 300 Frequency Switch Node Minimum OFF fS = 1.5 MHz, VPVIN = 3.3 V, VFB = 1.0 TOFF-MIN 50 Time V, Resistor Divider Ratio = 3.3 ns Switch Node Minimum ON fS = 1.5 MHz, VFB = 0.6 V, Resistor TON-MIN 70 Time Divider Ratio = 1 LOGIC VIH-EN EN Pin Rising Threshold 1.1 1.2 1.3 V VHYST-EN EN Pin Hysteresis Window 130 200 302 mV IEN-IN EN Pin Input Current VEN = 12 V 18 23 µA PWROK UV Rising VIH-UV-PWROK 87.5 93 97.5 Threshold % of VOUT % PWROK UV Hysteresis VHYST-UV-PWROK -4.2 Window Copyright © 2009–2013, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: LM10500 |
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