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LM25116 データシート(PDF) 5 Page - Texas Instruments |
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LM25116 データシート(HTML) 5 Page - Texas Instruments |
5 / 36 page LM25116 www.ti.com SNVS509C – APRIL 2007 – REVISED AUGUST 2011 Electrical Characteristics (continued) Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the junction temperature range of -40°C to +125°C and are provided for reference only. Unless otherwise specified, the following conditions apply: VIN = 24V, VCC = 7.4V, VCCX = 0V, EN = 5V, RT = 16 kΩ, no load on LO and HO. Symbol Parameter Conditions Min Typ Max Unit VCCX Switch Threshold VCCX Rising 4.3 4.5 4.7 V VCCX Switch Hysteresis 0.25 V VCCX Switch RDS(ON) ICCX = 10 mA 3.8 6.2 Ω VCCX Leakage VCCX = 0V -200 nA VCCX Pull- down Resistance VCCX = 3V 100 k Ω VCC Under-voltage Threshold VCC Rising 4.3 4.5 4.7 V VCC Under-voltage Hysteresis 0.2 V HB DC Bias Current HB - SW = 15V 125 200 µA EN Input VIL max EN Input Low Threshold 0.5 V VIH min EN Input High Threshold 3.3 V EN Input Bias Current VEN = 3V -7.5 -3 1 µA EN Input Bias Current VEN = 0.5V -1 0 1 µA EN Input Bias Current VEN = 42V 15 µA UVLO Thresholds UVLO Standby Threshold UVLO Rising 1.170 1.215 1.262 V UVLO Threshold Hysteresis 0.1 V UVLO Pull-up Current Source UVLO = 0V 5.4 µA UVLO Pull-down RDS(ON) 80 210 Ω Soft Start SS Current Source SS = 0V 8 11 14 µA SS Diode Emulation Ramp Disable SS Rising 3 V Threshold SS to FB Offset FB = 1.25V 160 mV SS Output Low Voltage Sinking 100 µA, UVLO = 0V 45 mV Error Amplifier VREF FB Reference Voltage Measured at FB pin, FB = COMP 1.195 1.215 1.231 V FB Input Bias Current FB = 2V 15 500 nA COMP Sink/Source Current 3 mA AOL DC Gain 80 dB fBW Unity Gain Bandwidth 3 MHz PWM Comparators tHO(OFF) Forced HO Off-time 320 450 580 ns tON(min) Minimum HO On-time VIN = 42V, CRAMP = 50 pF 100 ns Oscillator fSW1 Frequency 1 RT = 16 k Ω 180 200 220 kHz fSW2 Frequency 2 RT = 5 k Ω 480 535 590 kHz RT output voltage 1.191 1.215 1.239 V RT sync positive threshold 3.0 3.5 4.0 V Current Limit VCS(TH) Cycle-by-cycle Sense Voltage VCCX = 0V, RAMP = 0V 94 110 126 mV Threshold (CSG - CS) VCS(THX) Cycle-by-cycle Sense Voltage VCCX = 5V, RAMP = 0V 105 122 139 mV Threshold (CSG - CS) CS Bias Current CS = 42V -1 1 µA CS Bias Current CS = 0V 90 125 µA Copyright © 2007–2011, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM25116 |
同様の部品番号 - LM25116_14 |
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同様の説明 - LM25116_14 |
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