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1646 Datasheet(PDF) 2 Page - Linear Technology |
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1646 Datasheet(HTML) 2 Page - Linear Technology |
2 / 20 page LTC1646 2 1646fa SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IDD V5VIN Supply Current OFF/ON = 0V ● 1.5 4 mA VLKO Undervoltage Lockout 5VIN ● 2.3 2.50 2.7 V 3VIN ● 2.3 2.55 2.7 V VFB Foldback Current Limit Voltage VFB = (V5VIN –V5VSENSE), V5VOUT = 0V, TIMER = 0V ● 15 20 30 mV VFB = (V5VIN – V5VSENSE), V5VOUT = 4V, TIMER = 0V ● 50 55 65 mV VFB = (V3VIN – V3VSENSE), V3VOUT = 0V, TIMER = 0V ● 15 20 30 mV VFB = (V3VIN – V3VSENSE), V3VOUT = 2V, TIMER = 0V ● 50 55 65 mV VCB Circuit Breaker Trip Voltage VCB = (V5VIN – V5VSENSE), V5VOUT = 5V, TIMER Open ● 50 56 65 mV VCB = (V3VIN – V3VSENSE), V3VOUT = 3.3V, TIMER Open ● 50 56 65 mV tOC Overcurrent Fault Response Time (V5VIN – V5VSENSE) = 100mV, TIMER Open ● 10 21 30 µs (V3VIN – V3VSENSE) = 100mV, TIMER Open ● 10 21 30 µs tSS Short-Circuit Fault Response Time (V5VIN – V5VSENSE) = 200mV, TIMER Open ● 0.145 1 µs (V3VIN – V3VSENSE) = 200mV, TIMER Open ● 0.145 1 µs ICP GATE Pin Output Current OFF/ON = 0V, VGATE = 0V, TIMER = 0V ● –18 –13 –8 µA OFF/ON = 5V, VGATE = 5V, TIMER = 0V 80 200 300 µA OFF/ON = 0V, VGATE = 5V, FAULT = 0V, TIMER Open ● 47 12 mA VGATE External Gate Voltage OFF/ON = 0V, IGATE = –1µA ● 12 15 16 V (GATE to GND) OFF/ON = 0V, V5VIN = 3.3V, IGATE = –1µA ● 11 13 15 V VTH Power Good Threshold Voltage 3VOUT ● 2.8 2.9 3.0 V 5VOUT ● 4.5 4.65 4.75 V V3VONLY No 5V Input Mode Window Voltage V3VONLY = ⎪V5VIN – V3VIN⎪, V5VOUT = V3VOUT = 3.3V ● 50 120 200 mV VIL Input Low Voltage OFF/ON, RESETIN, FAULT ● 0.8 V ORDER PART NUMBER TJMAX = 125°C, θJA = 135°C/W Consult LTC Marketing for parts specified with wider operating temperature ranges. LTC1646CGN LTC1646IGN ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1) ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. V5VIN = 5V and V3VIN = 3.3V unless otherwise noted. Supply Voltages: 5VIN, 3VIN............................................... 10V Input Voltages: (Pins 15, 16) ..................... –0.3V to 10V Output Voltages: (Pins 1, 3, 4) .................. –0.3V to 10V Analog Voltages and Currents: (Pin 9) .................................... –0.3V to (3VIN + 0.3V) (Pins 2, 5, 7, 11, 13, 14) ........ –0.3V to (5VIN + 0.3V) (Pin 10) .......................................................... ±20mA Operating Temperature Range: LTC1646C ............................................... 0 °C to 70°C LTC1646I .............................................–40 °C to 85°C Storage Temperature Range ..................–65 °C to 150°C Lead Temperature (Soldering, 10 sec).................. 300 °C TOP VIEW GN PACKAGE 16-LEAD PLASTIC SSOP 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 RESETOUT TIMER FAULT PWRGD 5VOUT GND 3VOUT 3VIN RESETIN OFF/ON DRIVE PRECHARGE 5VIN 5VSENSE GATE 3VSENSE GN PART MARKING 1646 1646I Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ |
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