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LTC1148CS-5 Datasheet(PDF) 3 Page - Linear Technology |
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LTC1148CS-5 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 20 page  3 LTC1148 LTC1148-3.3/LTC1148-5 114835fd SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V8 – V7 Current Sense Threshold Voltage LTC1148, LTC1148HV, LTC1148L VSENSE– = 5V, V9 = VOUT/4 + 25mV (Forced) 25 mV VSENSE– = 5V, V9 = VOUT/4 – 25mV (Forced) ● 130 150 170 mV LTC1148-3.3, LTC1148HV-3.3 VSENSE – = VOUT + 100mV (Forced) 25 mV LTC1148L-3.3 VSENSE– = VOUT – 100mV (Forced) ● 130 150 170 mV LTC1148-5, LTC1148HV-5 VSENSE– = VOUT + 100mV (Forced) 25 mV VSENSE– = VOUT – 100mV (Forced) ● 130 150 170 mV V10 Shutdown Pin Threshold 0.5 0.8 2 V I10 Shutdown Pin Input Current 0V < VSHUTDOWN < 8V, VIN = 16V 1.2 5 µA I4 CT Pin Discharge Current VOUT in Regulation, VSENSE– = VOUT 50 70 90 µA VOUT = 0V 2 10 µA tOFF Off Time (Note 5) CT = 390pF, ILOAD = 700mA 4 5 6 µs tR, tF Driver Output Transition Times CL = 3000pF (Pins 1, 14), VIN = 6V 100 200 ns SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V9 Feedback Voltage (LTC1148, LTC1148HV VIN = 9V 1.20 1.25 1.30 V LTC1148L) ∆VOUT Regulated Output Voltage VIN = 9V LTC1148-3.3, LTC1148HV-3.3, LTC1148L-3.3 ILOAD = 700mA 3.17 3.33 3.43 V LTC1148-5, LTC1148HV-5 ILOAD = 700mA 4.85 5.05 5.20 V IQ Input DC Supply Current (Note 3) (Note 7) LTC1148 Series Normal Mode 4V < VIN < 12V 1.6 2.4 mA Sleep Mode 4V < VIN < 12V 160 260 µA Sleep Mode 6V < VIN < 12V 160 260 µA Shutdown VSHUTDOWN = 2.1V, 4V < VIN < 12V 10 22 µA LTC1148HV Series Normal Mode 4V < VIN < 18V 1.6 2.6 mA Sleep Mode 4V < VIN < 18V 160 280 µA Sleep Mode 6V < VIN < 18V 160 280 µA Shutdown VSHUTDOWN = 2.1V, 4V < VIN < 18V 10 24 µA LTC1148L Series Normal Mode 3.5V < VIN < 12V 1.6 2.4 mA Sleep Mode 3.5V < VIN < 12V 160 260 µA Shutdown VSHUTDOWN = 2.1V, 3.5V < VIN < 12V 10 22 µA V8 – V7 Current Sense Threshold Voltage LTC1148, LTC1148HV, LTC1148L (Note 4) VSENSE – = 5V, V9 = VOUT/4 – 25mV (Forced) 25 mV VSENSE– = 5V, V9 = VOUT/4 + 25mV (Forced) 125 150 175 mV LTC1148-3.3, LTC1148HV-3.3, LTC1148L-3.3 VSENSE– = VOUT + 100mV (Forced) 25 mV VSENSE– = VOUT – 100mV (Forced) 125 150 175 mV LTC1148-5, LTC1148HV-5 VSENSE– = VOUT + 100mV (Forced) 25 mV VSENSE– = VOUT – 100mV (Forced) 125 150 175 mV V10 Shutdown Pin Threshold 0.55 0.8 2 V tOFF Off Time (Note 5) CT = 390pF, ILOAD = 700mA 3.8 5 6 µs –40°C ≤ TA ≤ 85°C (Note 5), VIN = 10V, unless otherwise noted. The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 10V, VSHUTDOWN = 0V unless otherwise noted. ELECTRICAL C C HARA TERISTICS |
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