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LTC1177-5 Datasheet(PDF) 5 Page - Linear Technology |
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LTC1177-5 Datasheet(HTML) 5 Page - Linear Technology |
5 / 8 page 5 LTC1177-5/LTC1177-12 TYPICAL PERFORMANCE CHARACTERISTICS LTC1177-12 Output Voltage vs Temperature LTC1177-12 Input Current vs Temperature TEMPERATURE ( °C) –55 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 25 75 1177-12 G14 –25 0 50 100 125 VIN = 12V NO LOAD N18 SW28 TEMPERATURE ( °C) –55 6.4 6.2 6.0 5.8 5.6 5.4 5.2 5.0 25 75 1177-12 G13 –25 0 50 100 125 N18 SW28 VIN = 12V NO LOAD LTC1177-12 Output Voltage vs Input Voltage INPUT VOLTAGE (V) 9 8 7 6 5 4 3 10 11 12 13 1177-12 G15 14 N18 15 TA = 25°C SW28 LTC1177-12 Input Current vs Input Voltage INPUT VOLTAGE (V) 9 3.4 3.0 2.6 2.2 1.8 1.4 10 11 N18 SW28 12 13 1177-12 G16 14 15 TA = 25°C SENSE: Current Limit Sense Input. Connecting a 1 Ω resis- tor from the Sense pin to GND2 limits the current through the power MOSFET to 620mA (typ). ILIM = 620mV/RSENSE. GND2: Floating Ground Connects to the source of the external N-channel MOSFET. GND1: Input Ground. The ground connection of the input control signal. VIN: Voltage Input, 5.25V ≥ VIN ≥ 4.75V (LTC1177-5) and 12.6V ≥ VIN ≥ 11.4V (LTC1177-12). Connect a 0.01µF capacitor between VIN and GND1 when the source imped- ance is high or the VIN connection is long. OUT: Output Voltage. The output voltage level is 8V (typ) for SW package and 7.5V (typ) for N package (LTC1177- 5) with 5V at VIN pin; 5.7V (typ) for SW package and 5.2V (typ) for N package (LTC1177-12) with 12V at VIN pin. This pin is to drive the gate of the external N-channel MOSFET. PIN FUNCTIONS |
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