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LTC1645CS Datasheet(PDF) 2 Page - Linear Technology |
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LTC1645CS Datasheet(HTML) 2 Page - Linear Technology |
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2 / 24 page  2 LTC1645 Supply Voltage (VCC1, VCC2) ................................. 13.2V Input Voltage FB, ON, COMP+ ..................... – 0.3V to (VCC1 + 0.3V) TIMER ................................................. – 0.3V to 2.5V SENSE1 ..................... (VCC1 – 0.7V) to (VCC1 + 0.3V) SENSE2 ...................... (VCC1 – 0.7V) to (VCC2 + 0.3V) Output Voltage RESET, COMPOUT, FAULT .....................– 0.3V to 16V GATE1, GATE2 ................. Internally Limited (Note 3) Output Current GATE1, GATE2 ............................................... ±20mA Operating Temperature Range LTC1645C ............................................... 0 °C to 70°C LTC1645I ............................................ – 40 °C to 85°C Storage Temperature Range ................. – 65 °C to 150°C Lead Temperature (Soldering, 10 sec).................. 300 °C SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS DC Characteristics ICC1 VCC1 Supply Current ON = VCC1 = 5V, VCC2 = 3.3V q 1.1 2.0 mA ICC2 VCC2 Supply Current ON = VCC1 = 5V, VCC2 = 3.3V q 0.28 0.4 mA VLKO1 VCC1 Undervoltage Lockout High to Low q 2.16 2.23 2.3 V VLKO2 VCC2 Undervoltage Lockout High to Low q 1.06 1.12 1.18 V VLKHn VCCn Undervoltage Lockout Hysteresis 25 mV VFB FB Pin Voltage Threshold High to Low q 1.226 1.238 1.250 V ∆VFB FB Pin Threshold Line Regulation High to Low, VCC1 = 2.375V to 12V q 14 mV VFBHST FB Pin Voltage Threshold Hysteresis 5 mV VCOMP COMP+ Pin Voltage Threshold High to Low q 1.226 1.238 1.250 V ∆VCOMP COMP+ Pin Threshold Line Regulation High to Low, VCC1 = 2.375V to 12V q 14 mV VCOMPHST COMP+ Pin Voltage Threshold Hysteresis 5 mV (Note 1) The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. 2.375V ≤ VCC1 ≤ 12V, 1.2V ≤ VCC2 ≤ 12V unless otherwise noted (Note 2). TOP VIEW S PACKAGE 14-LEAD PLASTIC SO 1 2 3 4 5 6 7 14 13 12 11 10 9 8 VCC2 SENSE2 GATE2 FAULT RESET FB GND VCC1 SENSE1 GATE1 TIMER ON COMPOUT COMP+ TJMAX = 125°C, θJA = 110°C/ W TOP VIEW VCC1 SENSE1 GATE1 ON VCC2 SENSE2 GATE2 GND S8 PACKAGE 8-LEAD PLASTIC SO 1 2 3 4 8 7 6 5 TJMAX = 125°C, θJA = 150°C/ W ORDER PART NUMBER S8 PART MARKING 1645 1645I LTC1645CS8 LTC1645IS8 ORDER PART NUMBER LTC1645CS LTC1645IS Consult factory for Military grade parts. ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO ELECTRICAL CHARACTERISTICS |
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