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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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LTC4221IGN Arkusz danych(PDF) 2 Page - Linear Technology |
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LTC4221IGN Arkusz danych(HTML) 2 Page - Linear Technology |
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2 / 28 page  2 LTC4221 4221f ORDER PART NUMBER (Note 1) Supply Voltage (VCCn) ............................................ 17V SENSE n Pins ............................ – 0.3V to (VCCn + 0.3V) FB, ON Pins .............................. – 0.3V to (VCC1 + 0.3V) TIMER Pin .................................................. – 0.3V to 2V GATE Pins (Note 3) ................................... – 0.3V to 21V PWRGD, FAULT, FILTER Pins ................... – 0.3V to 17V Operating Temperature Range LTC4221C ............................................... 0°C to 70°C LTC4221I ............................................ – 40°C to 85°C Storage Temperature Range ................. – 65°C to 150°C Lead Temperature (Soldering, 10 sec).................. 300°C LTC4221CGN LTC4221IGN TJMAX = 125°C, θJA = 130°C/W ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VCC1 Supply Voltage Channel 1 ● 2.7 13.5 V VCC2 Supply Voltage Channel 2 VCC2 ≤ VCC1 ● 1 13.5 V ICC1 VCC1 Supply Current ON1, ON2 = 2V ● 2.2 3 mA ICC2 VCC2 Supply Current ON1, ON2 = 2V ● 0.05 0.15 mA VCC1(UVL) Undervoltage Lockout for Channel 1 VCC1 Rising ● 2.1 2.5 2.675 V ∆VCC1(HYST) Undervoltage Lockout Hysteresis 110 mV VCC2(UVL) Undervoltage Lockout for Channel 2 VCC2 Rising ● 0.65 0.8 0.975 V ∆VCC2(HYST) Undervoltage Lockout Hysteresis 25 mV ISENSE1(IN) SENSE1 Pin Input Current 0V ≤ VSENSE1 ≤ VCC1 ● ±0.03 ±5 µA ISENSE2(IN) SENSE2 Pin Input Current VSENSE2 = VCC2 ● ±0.2 ±5 µA VSENSE2 = 0V 1000 µA VSENSE(FC) SENSE n Threshold Voltage Channel n Fast Comparator Threshold ● 85 100 115 mV VSENSE(SC) SENSE n Threshold Voltage Channel n Slow Comparator Threshold 22.5 25 27.5 mV ● 20.5 25 29.5 mV VSENSE(ACL) SENSE n Voltage at Active VFBn = 0 9 mV Current Limit VFBn = 0.65V 25 mV IGATE(UP) GATE n Output Current VON1 = VON2 = 2V, VGATEn = 0V ● –7 –9.5 –12 µA IGATE(DN) GATE n Output Current VON1 = VON2 = 0.6V, VGATEn = 3.3V ● 75 100 125 µA IGATE(FSTDN) GATE n Output Current UVLO with VGATEn = 3.3V or FAULT 16 mA Latched with VGATEn = 3.3V ∆VGATE External N-Channel Gate Drive VGATEn – VCC1 for VCC1 = 2.7V, VCC2 = 1V ● 4.5 13 V VGATEn – VCC1 for VCC1 = 3.3V, VCC2 = 2.5V ● 516 V VGATEn – VCC1 for VCC1 = 5V, VCC2 = 3.3V ● 816 V VGATEn – VCC1 for VCC1 = 12V, VCC2 = 12V ● 718 V VGATE(OV) GATE n Overvoltage Lockout Threshold ● 0.4 0.5 V ION(IN) ON n Pin Input Current 0V ≤ VONn ≤ VCC1 ● ±0.01 ±1 µA VON(RESET) ON1 Reset Threshold VON1 Falling ● 0.375 0.4 0.425 V ∆VON(RESETHYST) ON1 Reset Threshold Hysteresis 25 mV The ● indicates specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC1 = 5V, VCC2 = 3.3V, unless otherwise noted. GN PACKAGE 16-LEAD PLASTIC SSOP 1 2 3 4 5 6 7 8 TOP VIEW 16 15 14 13 12 11 10 9 ON1 VCC1 SENSE1 GATE1 FB1 PWRGD1 FAULT FILTER ON2 VCC2 SENSE2 GATE2 FB2 PWRGD2 GND TIMER GN PART MARKING 4221 4221I Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS |
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