Datasheet LT3028 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | Dual 100mA/500mA Low Dropout, Low Noise, Micropower Regulators with Independent Inputs |
| 页数 / 页 | 16 / 5 — TYPICAL PERFOR A CE CHARACTERISTICS. Quiescent Current (Per Output). ADJ1 … |
| 文件格式/大小 | PDF / 348 Kb |
| 文件语言 | 英语 |
TYPICAL PERFOR A CE CHARACTERISTICS. Quiescent Current (Per Output). ADJ1 or ADJ2 Pin Voltage. Output 2
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LT3028
W U TYPICAL PERFOR A CE CHARACTERISTICS Quiescent Current (Per Output) ADJ1 or ADJ2 Pin Voltage Quiescent Current (Per Output)
50 1.240 40 IL = 1mA TJ = 25°C 45 1.235 35 RL = 250k 40 V A) A) SHDN = VIN µ 1.230 µ 30 35 VSHDN = VIN 1.225 25 30 25 1.220 20 20 1.215 15 15 ADJ PIN VOLTAGE (V) QUIESCENT CURRENT ( 1.210 QUIESCENT CURRENT ( 10 10 1.205 5 5 VIN = 6V RL = 250k, IL = 5µA VSHDN = 0V 0 1.200 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 0 2 4 6 8 10 12 14 16 18 20 TEMPERATURE (°C) TEMPERATURE (°C) INPUT VOLTAGE (V) 3028 G07 3028 G08 3028 G09
Output 2 Output 2 GND Pin Current GND Pin Current vs ILOAD Output 1 GND Pin Current
2.50 2.50 1200 T V J = 25°C IN = VOUT(NOMINAL) + 1V 2.25 *FOR V 2.25 T OUT = 1.22V J = 25°C 1000 R 2.00 L = 24.4Ω R 2.00 L = 12.2Ω IL = 50mA* I A) 1.75 L = 100mA* 1.75 µ 800 1.50 1.50 TJ = 25°C VIN = VSHDN 1.25 R 1.25 600 L = 24.4Ω *FOR VOUT = 1.22V 1.00 IL = 50mA* 1.00 400 RL = 122Ω 0.75 0.75 I GND PIN CURRENT (mA) GND PIN CURRENT (mA) GND PIN CURRENT ( L = 10mA* 0.50 RL = 1.22k RL = 122Ω 0.50 I 200 R L = 1mA* I L = 1.22k 0.25 L = 10mA* 0.25 IL = 1mA* 0 0 0 0 1 2 3 4 5 6 7 8 9 10 0 10 20 30 40 50 60 70 80 90 100 0 1 2 3 4 5 6 7 8 9 10 INPUT VOLTAGE (V) OUTPUT CURRENT (mA) INPUT VOLTAGE (V) 3028 G10 3028 G11 3028 G12
Output 1 SHDN1 or SHDN2 Pin Threshold Output 1 GND Pin Current GND Pin Current vs ILOAD (On-to-Off)
12 12 1.0 T V J = 25°C IN = VOUT(NOMINAL) + 1V IL = 1mA V T 0.9 IN = VSHDN J = 25°C 10 *FOR V 10 OUT = 1.22V 0.8 RL = 2.44Ω 0.7 8 IL = 500mA* 8 0.6 R 6 L = 4.07Ω I 6 0.5 L = 300mA* 0.4 4 4 0.3 GND PIN CURRENT (mA) RL = 12.2Ω GND PIN CURRENT (mA) SHDN PIN THRESHOLD (V) 0.2 2 IL = 100mA* 2 0.1 0 0 0 0 1 2 3 4 5 6 7 8 9 10 0 50 100 150 200 250 300 350 400 450 500 –50 –25 0 25 50 75 100 125 INPUT VOLTAGE (V) OUTPUT CURRENT (mA) TEMPERATURE (°C) 3028 G13 3028 G14 3028 G15 3028f 5
W U TYPICAL PERFOR A CE CHARACTERISTICS Quiescent Current (Per Output) ADJ1 or ADJ2 Pin Voltage Quiescent Current (Per Output)
50 1.240 40 IL = 1mA TJ = 25°C 45 1.235 35 RL = 250k 40 V A) A) SHDN = VIN µ 1.230 µ 30 35 VSHDN = VIN 1.225 25 30 25 1.220 20 20 1.215 15 15 ADJ PIN VOLTAGE (V) QUIESCENT CURRENT ( 1.210 QUIESCENT CURRENT ( 10 10 1.205 5 5 VIN = 6V RL = 250k, IL = 5µA VSHDN = 0V 0 1.200 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 0 2 4 6 8 10 12 14 16 18 20 TEMPERATURE (°C) TEMPERATURE (°C) INPUT VOLTAGE (V) 3028 G07 3028 G08 3028 G09
Output 2 Output 2 GND Pin Current GND Pin Current vs ILOAD Output 1 GND Pin Current
2.50 2.50 1200 T V J = 25°C IN = VOUT(NOMINAL) + 1V 2.25 *FOR V 2.25 T OUT = 1.22V J = 25°C 1000 R 2.00 L = 24.4Ω R 2.00 L = 12.2Ω IL = 50mA* I A) 1.75 L = 100mA* 1.75 µ 800 1.50 1.50 TJ = 25°C VIN = VSHDN 1.25 R 1.25 600 L = 24.4Ω *FOR VOUT = 1.22V 1.00 IL = 50mA* 1.00 400 RL = 122Ω 0.75 0.75 I GND PIN CURRENT (mA) GND PIN CURRENT (mA) GND PIN CURRENT ( L = 10mA* 0.50 RL = 1.22k RL = 122Ω 0.50 I 200 R L = 1mA* I L = 1.22k 0.25 L = 10mA* 0.25 IL = 1mA* 0 0 0 0 1 2 3 4 5 6 7 8 9 10 0 10 20 30 40 50 60 70 80 90 100 0 1 2 3 4 5 6 7 8 9 10 INPUT VOLTAGE (V) OUTPUT CURRENT (mA) INPUT VOLTAGE (V) 3028 G10 3028 G11 3028 G12
Output 1 SHDN1 or SHDN2 Pin Threshold Output 1 GND Pin Current GND Pin Current vs ILOAD (On-to-Off)
12 12 1.0 T V J = 25°C IN = VOUT(NOMINAL) + 1V IL = 1mA V T 0.9 IN = VSHDN J = 25°C 10 *FOR V 10 OUT = 1.22V 0.8 RL = 2.44Ω 0.7 8 IL = 500mA* 8 0.6 R 6 L = 4.07Ω I 6 0.5 L = 300mA* 0.4 4 4 0.3 GND PIN CURRENT (mA) RL = 12.2Ω GND PIN CURRENT (mA) SHDN PIN THRESHOLD (V) 0.2 2 IL = 100mA* 2 0.1 0 0 0 0 1 2 3 4 5 6 7 8 9 10 0 50 100 150 200 250 300 350 400 450 500 –50 –25 0 25 50 75 100 125 INPUT VOLTAGE (V) OUTPUT CURRENT (mA) TEMPERATURE (°C) 3028 G13 3028 G14 3028 G15 3028f 5