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LT4321 Folha de dados(PDF) 3 Page - Linear Technology |
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LT4321 Folha de dados(HTML) 3 Page - Linear Technology |
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3 / 12 page ![]() LT4321 3 4321f For more information www.linear.com/LT4321 elecTrical characTerisTics Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Operating Supply Range |IN12-IN36|, |IN45-IN78|, OUTP l 20 80 V VUVLO Undervoltage Lockout OUTP-OUTN l 15 17 18 V IS(DET) Total Supply Current in Detect Region OUTP < 10V l 0.8 5 µA IS(OFF) Total Supply Current in Shutdown OUTP > 12V, EN < VIL and EN > VIH l 32 60 µA IS(ON) Total Operating Supply Current EN > VIH or EN < VIL, OUTP > 20V l 0.5 0.8 mA Top Gate Drive INn = OUTP + ∆VSD(MAX) + 5mV, 10µA Out of TGn (Note 3) l 7.7 9.5 11 V VBG Bottom Gate Drive 10µA Out of BGn (Note 3) l 10 11.5 13 V Top Gate Pull-Up Current TGn = INn (Note 3) l 50 120 250 µA Top Gate Pull-Down Current INn = OUTP – 0.25V; TGn – INn = 5V l 1.25 mA Bottom Gate Pull-Up Current BGn < VBG (Note 3) l 15 30 45 µA Bottom Gate Pull-Down Current BGn = 5V l 3 mA EN Pull-Up Resistance (Active Low) OUTP = 55V l 160 250 310 kΩ EN Pull-Down Resistance (Active High) OUTP = 55V l 160 250 310 kΩ VIH Digital Input High EN, EN l 2.6 V VIL Digital Input Low EN, EN l 0.5 V VENOC EN Open Circuit Voltage OUTP = 55V l 2 2.5 3 V ∆VSD Topside Forward Regulation Voltage INn - OUTP l 2 10 18 mV Bottom Comparator Turn-On Threshold INn - OUTN l –30 –15 0 mV Bottom Comparator Turn-Off Threshold INn - OUTN l 2 15 30 mV The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C, OUTP = 20V to 80V unless otherwise noted. Note 2: Referenced with respect to OUTN unless otherwise specified. Note 3: All conditions for external MOSFET turn on must be met. See Table 1 and Table 2. |
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