Datasheet LT1129, LT1129-3.3, LT1129-5 (Analog Devices) - 7

LT1129/LT1129-3.3/LT1129-5
TYPICAL PERFORMANCE CHARACTERISTICS LT1129-3.3 LT1129-5 LT1129 Ground Pin Current Ground Pin Current Ground Pin Current
60 60 60 T T J = 25°C J = 25°C TJ = 25°C V V OUT = VSENSE OUT = VSENSE VOUT = VADJ 50 50 50 RLOAD = 5.3Ω 40 40 RLOAD = 7.1Ω 40 ILOAD = 700mA* R I LOAD = 4.7Ω LOAD = 700mA* ILOAD = 700mA* 30 30 R 30 LOAD = 10Ω RLOAD = 6.6Ω I RLOAD = 7.5Ω LOAD = 500mA* I I LOAD = 500mA* LOAD = 500mA* 20 20 20 R R R GROUND PIN CURRENT (mA) LOAD = 11Ω GROUND PIN CURRENT (mA) LOAD = 16.6Ω GROUND PIN CURRENT (mA) LOAD = 12.6Ω 10 ILOAD = 300mA* 10 ILOAD = 300mA* 10 ILOAD = 300mA* *FOR V *FOR V OUT = 3.3V OUT = 5V *FOR VOUT = 3.75V 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 1 2 3 4 5 6 7 8 9 10 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 112935 G13 112935 G14 112935 G15
Shutdown Pin Threshold Shutdown Pin Threshold Ground Pin Current (On-to-Off) (Off-to-On)
70 2.0 2.0 VIN = 3.3V (LT1129-3.3) 1.8 ILOAD = 1mA 1.8 60 VIN = 5V (LT1129-5) VIN = 3.75V (LT1129) 1.6 1.6 I DEVICE IS OPERATING LOAD = 700mA 50 IN DROPOUT 1.4 1.4 TJ = 125°C 40 1.2 1.2 ILOAD = 1mA TJ = 25°C 1.0 1.0 30 0.8 0.8 20 0.6 0.6 GROUND PIN CURRENT (mA) TJ = –50°C SHUTDOWN THRESHOLD (V) 0.4 SHUTDOWN THRESHOLD (V) 0.4 10 0.2 0.2 0 0 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 OUTPUT CURRENT (A) TEMPERATURE (°C) TEMPERATURE (°C) 112935 G16 112935 G17 112935 G18
Shutdown Pin Current Shutdown Pin Input Current Adjust Pin Bias Current
10 25 400 VSHDN = 0V VADJ = VOUT = 3.75V 9 350 8 20 300 7 250 6 15 5 200 4 10 150 3 100 2 5 SHUTDOWN PIN CURRENT (μA) ADJUST PIN BIAS CURRENT (nA) 50 1 SHUTDOWN PIN INPUT CURRENT (mA) 0 0 0 –50 –25 0 25 50 75 100 125 0 1 2 3 4 5 6 7 8 9 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) SHUTDOWN PIN VOLTAGE (V) TEMPERATURE (°C) 112935 G20 112935 G19 112935 G21 112935ff 7