Datasheet LT1528 (Analog Devices) - 4

LT1528
TYPICAL PERFORMANCE CHARACTERISTICS Guaranteed Dropout Voltage Dropout Voltage Quiescent Current
1.0 0.8 2.00 = TEST POINTS VIN = 4.3V 0.9 0.7 1.75 RL = ∞ 0.8 0.6 ILOAD = 3A 1.50 0.7 TJ ≤ 125°C 0.5 1.25 0.6 TAGE (V) ILOAD = 1.5A 0.5 0.4 I 1.00 LOAD = 700mA TJ ≤ 25°C 0.4 0.3 0.75 0.3 DROPOUT VOL DROPOUT VOLTAGE (V) 0.2 V I SHDN = OPEN 0.2 LOAD = 300mA QUIESCENT CURRENT (mA) 0.50 0.1 0.1 V I 0.25 SHDN = 0V LOAD = 10mA 0 0 0 0.5 1.0 1.5 2.0 2.5 3.0 –50 –25 0 25 50 75 100 125 0–50 –25 0 25 50 75 100 125 OUTPUT CURRENT (A) TEMPERATURE (°C) TEMPERATURE (°C) 1528 TPC02 1528 TPC01 1528 TPC03
Quiescent Current SENSE Pin Voltage GND Pin Current
2000 3.400 7 ILOAD = 0 ILOAD = 1mA TJ = 25°C 1750 RLOAD = ∞ 3.375 V 6 OUT = VSENSE *FOR VOUT = 3.3V 1500 3.350 5 RL = 6.6Ω 1250 3.325 I TAGE (V) LOAD = 500mA* 4 1000 3.300 RL = 11Ω 3 ILOAD = 300mA* 750 3.275 RL = 33Ω SENSE PIN VOL 2 QUIESCENT CURRENT (μA) 500 VSHDN = OPEN (HIGH) 3.250 GND PIN CURRENT (mA) ILOAD = 100mA* 250 1 VSHDN = 0V 3.225 RL = 330Ω: ILOAD = 10mA* 0 3.200 0 0 1 2 3 4 5 6 7 8 9 10 –50 –25 0 25 50 75 100 125 0 1 2 3 4 5 6 7 8 9 10 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V) 1528 TPC04 1528 TPC05 1528 TPC06
SHDN Pin Threshold GND Pin Current GND Pin Current (On-to-Off)
100 100 2.0 T V J = 25°C IN = 3.3V ILOAD = 1mA 90 V DEVICE IS OPERATING 1.8 OUT = VSENSE 90 *FOR V IN DROPOUT 80 OUT = 3.3V 80 1.6 TJ = 125°C 70 70 1.4 60 60 1.2 R TJ = 25°C L = 1.1Ω 50 I 50 1.0 LOAD = 3A* 40 40 0.8 RL = 2.2Ω PIN THRESHOLD (V) TJ = –50°C 30 I 30 LOAD = 1.5A* RL = 4.7Ω 0.6 GND PIN CURRENT (mA) I GND PIN CURRENT (mA) LOAD = 700mA* SHDN 20 20 0.4 10 10 0.2 0 0 0 0 1 2 3 4 5 6 7 8 9 10 0 0.5 1.0 1.5 2.0 2.5 3.0 –50 –25 0 25 50 75 100 125 INPUT VOLTAGE (V) OUTPUT CURRENT (A) TEMPERATURE (°C) 1528 TPC07 1528 TPC08 1528 TPC09 1528fb 4