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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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LTC1421CSW Scheda tecnica(PDF) 2 Page - Linear Technology |
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LTC1421CSW Scheda tecnica(HTML) 2 Page - Linear Technology |
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2 / 24 page  2 LTC1421/LTC1421-2.5 ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER I FOR ATIO Consult factory for Industrial and Military grade parts. (Note 1) Supply Voltage (VCCLO, VCCHI, AUXVCC) .............. 13.2V Input Voltage (Analog Pins) ..... – 0.3V to (VCCHI + 0.3V) Input Voltage (Digital Pins) ................... – 0.3V to 13.2V Output Voltage (Digital Pins) .. – 0.3V to (VCCLO + 0.3V) Output Voltage (CPON) ......... – 13.2V to (VCCLO + 0.3V) Output Voltage (VOUTLO, VOUTHI) ........... – 0.3V to 13.2V Output Voltage (GATELO, GATEHI) ........... – 0.3V to 20V Operating Temperature Range .................... 0 °C to 70°C Storage Temperature Range ................ – 65 °C to 150°C Lead Temperature (Soldering, 10 sec)................. 300 °C ORDER PART NUMBER TJMAX = 125°C, θJA = 100°C/W (G) TJMAX = 125°C, θJA = 85°C/W (SW) 1 2 3 4 5 6 7 8 9 10 11 12 TOP VIEW SW PACKAGE 24-LEAD PLASTIC SO G PACKAGE 24-LEAD PLASTIC SSOP 24 23 22 21 20 19 18 17 16 15 14 13 CON1 CON2 POR FAULT DISABLE PWRGD RESET REF CPON RAMP FB GND AUXVCC VCCLO SETLO GATELO VOUTLO VCCHI SETHI GATEHI VOUTHI COMPOUT COMP – COMP + ELECTRICAL CHARACTERISTICS V CCHI = 12V, VCCLO = 5V, TA = 25°C unless otherwise noted (Note 2). SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS DC Characteristics ICCLO VCCLO Supply Current CON1 = CON2 = GND, POR = VCCLO q 1.5 3 mA ICCHI VCCHI Supply Current CON1 = CON2 = GND, POR = VCCLO q 0.6 1 mA VLKO Undervoltage Lockout VCCLO and VCCHI 2.28 2.45 2.60 V VLKH Undervoltage Lockout Hysteresis VCCLO and VCCHI 100 mV VREF Reference Output Voltage No Load q 1.220 1.232 1.244 V ∆VLNR Reference Line Regulation 3V ≤ VCCLO ≤ 12V, No Load q 48 mV ∆VLDR Reference Load Regulation IO = 0mA to – 5mA, Sourcing Only q 13 mV IRSC Reference Short-Circuit Current VREF = 0V – 45 mA VCOF Comparator Offset Voltage 0V ≤ VCM ≤(VCCLO − 1.3V) q ±10 mV VCPSR Comparator Power Supply Rejection 0V ≤ VCM ≤(VCCLO − 1.3V), 3V ≤ VCCLO ≤ 12V q 1 mV/V VCHST Comparator Hysteresis 0V ≤ VCM ≤(VCCLO − 1.3V) 7 mV VRST Reset Voltage Threshold (VOUTLO) FB = VOUTLO q 2.80 2.90 3.00 V FB = Floating q 4.50 4.65 4.75 V FB = GND q 5.75 5.88 6.01 V VRHST Reset Threshold Hysteresis (VOUTLO) FB = VOUTLO 7mV FB = Floating 12 mV FB = GND 15 mV RFB FB Pin Input Resistance 0V ≤ VFB ≤ VCCLO 95 k Ω VCB Circuit Breaker Trip Voltage VCB = (VCCLO – VSETLO) or VCB = (VCCHI – VSETHI) q 40 50 60 mV VTRIP Output Voltage for Re-Power-Up LTC1421 (Note 3) 0.1 V LTC1421-2.5 (Note 4) 2.5 V LTC1421CG LTC1421CSW LTC1421-2.5CG LTC1421-2.5CSW |
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