Datasheet LT3012B (Analog Devices) - 4

LT3012B
W U TYPICAL PERFOR A CE CHARACTERISTICS Typical Dropout Voltage Guaranteed Dropout Voltage Dropout Voltage
600 600 600 = TEST POINTS TJ ≤ 125°C 500 T 500 500 J = 125°C IL = 250mA 400 400 400 IL = 100mA TJ ≤ 25°C 300 TJ = 25°C 300 300 IL = 50mA 200 200 200 I DROPOUT VOLTAGE (mV) DROPOUT VOLTAGE (mV) L = 10mA 100 100 100 IL = 1mA GUARANTEED DROPOUT VOLTAGE (mV) 0 0 0 0 50 100 150 200 250 0 50 100 150 200 250 –50 –25 0 25 50 75 100 125 OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) TEMPERATURE (°C) 3012B G01 301B2 G02 3012B G03
Quiescent Current ADJ Pin Voltage Quiescent Current
100 1.260 80 VIN = 6V IL = 1mA TJ = 25°C 90 RL = ∞ 1.255 70 RL = ∞ IL = 0 VOUT = 1.24V 80 1.250 µA) µA) 60 70 1.245 50 60 50 1.240 40 40 1.235 30 30 ADJ PIN VOLTAGE (V) 1.230 QUIESCENT CURRENT ( QUIESCENT CURRENT ( 20 20 1.225 10 10 0 1.220 0 – 50 – 25 0 25 50 75 100 125 – 50 – 25 0 25 50 75 100 125 0 1 2 3 4 5 6 7 8 9 10 TEMPERATURE (°C) TEMPERATURE (°C) INPUT VOLTAGE (V) 3012B G04 3012B G05 3012B G06
GND Pin Current GND Pin Current GND Pin Current vs ILOAD
1.2 10 10 T T J = 25°C J = 25°C, *FOR VOUT = 1.24V VIN = 4.5V *FOR VOUT = 1.24V 9 9 TJ = 25°C 1.0 V 8 8 OUT = 1.24V RL = 49.6Ω RL = 4.96Ω I 7 I 7 0.8 L = 25mA* L = 250mA* 6 6 RL = 124Ω 0.6 IL = 10mA* 5 5 4 RL = 12.4Ω 4 0.4 IL = 100mA* 3 3 GND PIN CURRENT (mA) R GND PIN CURRENT (mA) GND PIN CURRENT (mA) L = 1.24k 2 2 0.2 IL = 1mA* 1 R 1 L = 24.8Ω, IL = 50mA* 0 0 0 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 50 100 150 200 250 INPUT VOLTAGE (V) INPUT VOLTAGE (V) LOAD CURRENT (mA) 3012B G07 3012B G08 3012B G09 3012bf 4