Datasheet LT1307, LT1307B (Analog Devices) - 5

LT1307/LT1307B
W U TYPICAL PERFOR A CE CHARACTERISTICS 5V Output Efficiency, Circuit of 3.3V Output Efficiency, Circuit of 5V Output Efficiency, Circuit of Figure 1 (LT1307) Figure 1 (LT1307B) Figure 1 (LT1307B)
90 90 90 V 80 80 IN = 1.5V 80 70 70 VIN = 1V VIN = 1.25V V 60 60 IN = 1.25V VIN = 1V V 70 IN = 1.00V 50 50 VIN = 1.25V 40 40 EFFICIENCY (%) VIN = 1.5V EFFICIENCY (%) EFFICIENCY (%) VIN = 1.5V 60 30 30 20 20 50 10 10 0.1 1 10 100 200 0.1 1 10 100 0.1 1 10 100 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) LT1307 • G01 1307 G02 1307 G02
Feedback Bias Current vs Quiescent Current vs Temperature Temperature LBI Bias Current vs Temperature
80 50 16 VIN = 1.1V 70 14 40 µA) 60 12 50 10 30 40 8 30 20 6 LBI BIAS CURRENT (nA) QUIESCENT CURRENT ( 20 4 FEEDBACK BIAS CURRENT (nA) 10 10 2 0 0 0 –50 –25 0 25 50 75 100 –50 –25 0 25 50 75 100 –50 –25 0 25 50 75 100 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 1307 G04 1307 G05 LT1307 • TPC06
Quiescent Current in Shutdown Shutdown Pin Bias Current vs Switch VCESAT vs Current Input Voltage
10 20 500 TA = 25°C 8 µA) 16 400 µA) 6 12 300 (mV) 4 8 CESATV 200 QUIESCENT CURRENT ( 2 SHUTDOWN PIN CURRENT ( 4 100 0 0 0 0 1 2 3 4 5 0 1 2 3 4 5 0 100 200 300 400 500 600 INPUT VOLTAGE (V) INPUT VOLTAGE (V) SWITCH CURRENT (mA) 1307 G07 1307 G07 LT1307 • TPC09 1307fa 5