Datasheet LTC3563 (Analog Devices) - 5

LTC3563
W U TYPICAL PERFOR A CE CHARACTERISTICS TA = 25°C unless otherwise specifi ed. RDS(ON) vs Input Voltage RDS(ON) vs Temperature Switch Leakage vs Input Voltage
0.9 0.9 1000 0.8 0.8 900 MAIN SWITCH 0.7 0.7 800 0.6 0.6 700 ) Ω MAIN SWITCH Ω 600 ( 0.5 ( 0.5 500 0.4 0.4 MAIN SWITCH DS(ON) DS(ON) R R 400 0.3 SYNCHRONOUS 0.3 300 SWITCH 0.2 0.2 SYNCHRONOUS LEAKAGE CURRENT (pA) SYNCHRONOUS SWITCH V 200 IN = 2.7V SWITCH 0.1 0.1 VIN = 3.6V 100 VIN = 4.2V 0 0 0 1 2 3 4 5 6 7 –50 –25 0 25 50 75 100 125 0 1 2 3 4 5 6 VIN (V) TEMPERATURE (°C) VIN (V) 3563 G13 3563 G14 3542 G15
Switch Leakage vs Temperature Effi ciency vs Input Voltage
300 100 VOUT = 1.87V 90 250 80 200 70 150 60 EFFICIENCY (%) 100 I SWITCH LEAKAGE (nA) 50 OUT = 500mA IOUT = 100mA 50 MAIN SWITCH IOUT = 10mA SYNCHRONOUS SWITCH 40 IOUT = 1mA IOUT = 0.1mA 0 30 –50 –25 0 25 50 75 100 125 2.5 3 3.5 4 4.5 5 5.5 TEMPERATURE (°C) INPUT VOLTAGE (V) 3542 G16 3563 G17
Effi ciency vs Load Current Effi ciency vs Load Current
100 100 90 90 80 80 70 70 60 60 50 50 40 40 EFFICIENCY (%) EFFICIENCY (%) 30 30 20 V 20 IN = 2.7V VIN = 2.7V 10 V V OUT = 1.87V IN = 3.6V 10 V V OUT = 1.28V IN = 3.6V FIGURE 3a CIRCUIT VIN = 4.2V FIGURE 3a CIRCUIT VIN = 4.2V 0 0 0.1 1 10 100 1000 0.1 1 10 100 1000 OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) 3563 G17 3563 G18 3563f 5