データシートサーチシステム |
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LM27262LQX データシート(PDF) 8 Page - National Semiconductor (TI) |
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LM27262LQX データシート(HTML) 8 Page - National Semiconductor (TI) |
8 / 22 page Electrical Characteristics (Note 5),(Note 6) V CC5V = 5V unless otherwise specified. (Continued) Symbol Parameter Conditions Min Typ Max Unit Error Amp Input Offset Voltage VDAC = 1.3V ±1 mV Error Amplifier Open loop DC Gain VFB = 1.3V, Comp Pin open 730 V/V OSCILLATOR Active Mode Switching Frequency 235 300 345 kHz Minimum On-Time 120 ns Maximum Duty Cycle 75 % SOFT START AND SOFT STOP (SOFTCAP), VIDSLEW SOFTCAP Charge Current 2.2 3.2 4.4 µA SOFTCAP Discharge Resistor Measured from SOFTCAP pin to GND pin 50 k Ω DELAY FUNCTION DELAY Source/Charge Current V DELAY =0V 9 12 15 µA DELAY Discharge Current V DELAY =5V 1 mA DELAY Threshold Voltage V DELAY rising 1.4 V PWRGOOD, UVP, OVP FAULT LATCHING THRESHOLD VPGH% PWRGD OVP Threshold Difference of VCORE pin above EA int. reference voltage measured at VFB pin in test mode; VID = 110110 = 1.3V, V OS = 25mV 0.23 V VPGL% PWRGD UVP Threshold Percentage of VCORE pin below EA int. reference voltage measured at VFB pin in test mode; VID = 110110 = 1.3V, V OS = 25mV 86 89 92 % PWRGD Output Low Voltage PWRGD sinking 4mA (open drain) 0.15 V PWRGD Leakage Current PWRGD pulled up to 5.5V 1 10 µA VCORE OVP Latch Threshold Difference of VCORE pin above EA int. reference voltage measured at VFB pin in test mode; VID = 110110 = 1.3V, V OS = 25mV 0.23 V VCORE UVP Latch Threshold Percentage of VCORE pin below EA int. reference voltage measured at VFB pin in test mode; VID = 110110 = 1.3V, V OS = 25mV 86 89 92 % V RON Low Logic Level Input Voltage 0.3 V High Logic Level Input Voltage 1.2 V Low-to-High Voltage Threshold 0.95 - V V RON Threshold Hysteresis 0.1 - V V RON Leakage Current V VRON = 3.3V 5 20 µA V VRON = GND 50 nA V RON Assertion Delay Delay of power on after VRON transition (SOFTCAP = 0.01µF) 2 msec www.national.com 8 |
同様の部品番号 - LM27262LQX |
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同様の説明 - LM27262LQX |
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