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LTC1754-5 Datasheet(PDF) 5 Page - Linear Technology |
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LTC1754-5 Datasheet(HTML) 5 Page - Linear Technology |
5 / 12 page 5 LTC1754-3.3/LTC1754-5 VOUT (Pin 1): Regulated Output Voltage. For best perfor- mance, VOUT should be bypassed with a 6.8µF (min) low ESR capacitor as close as possible to the pin. GND (Pin 2): Ground. Should be tied to a ground plane for best performance. SHDN (Pin 3): Active Low Shutdown Input. A low on SHDN disables the LTC1754. SHDN must not be allowed to float. C– (Pin 4): Flying Capacitor Negative Terminal. VIN (Pin 5): Input Supply Voltage. VIN should be bypassed with a 6.8 µF (min) low ESR capacitor. C + (Pin 6): Flying Capacitor Positive Terminal. SI PLIFIED BLOCK DIAGRA TYPICAL PERFOR A CE CHARACTERISTICS LTC1754-3.3. LTC1754-5, TA = 25°C unless otherwise noted. Oscillator Frequency vs Supply Voltage Efficiency vs Supply Voltage SUPPLY VOLTAGE (V) 2.0 70 80 100 3.5 4.5 1754 G19 60 50 2.5 3.0 4.0 5.0 5.5 40 30 90 TA = 25°C CFLY = 1µF LTC1754-5 IOUT = 25mA LTC1754-3.3 IOUT = 20mA SUPPLY VOLTAGE (V) 2.0 800 3.5 1754 G20 650 550 2.5 3.0 4.0 500 450 850 750 700 600 4.5 5.0 5.5 TA = 85°C TA = 25°C TA = –40°C SUPPLY VOLTAGE (V) 2.0 0.85 0.90 0.95 3.5 4.5 1754 G21 0.80 0.75 2.5 3.0 4.0 5.0 5.5 0.70 0.65 TA = –40°C TA = 25°C TA = 85°C – + COMP1 2 * C+ CFLY 1 µF C– *CHARGE PUMP SHOWN IN PHASE 1, THE CHARGING PHASE. PHASE 1 IS ALSO THE SHUTDOWN PHASE 1 1 2 CONTROL VREF COUT 10 µF CIN 10 µF VIN 1754 BD VOUT SHDN VSHDN Threshold Voltage vs Supply Voltage PI FU CTIO S |
Similar Part No. - LTC1754-5_15 |
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Similar Description - LTC1754-5_15 |
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