Datasheet LT1528 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 3A Low Dropout Regulator for Microprocessor Applications |
| Pages / Page | 12 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. SHDN Pin Threshold (Off-to-On). SHDN … |
| File Format / Size | PDF / 170 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. SHDN Pin Threshold (Off-to-On). SHDN Pin Current. SHDN Pin Input Current
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LT1528
TYPICAL PERFORMANCE CHARACTERISTICS SHDN Pin Threshold (Off-to-On) SHDN Pin Current SHDN Pin Input Current
2.0 100 25 VSHDN = 0V 1.8 90 1.6 ILOAD = 3A 80 20 1.4 70 1.2 60 15 ILOAD = 1mA 1.0 50 0.8 40 10 PIN THRESHOLD (V) PIN CURRENT (μA) 0.6 30 PIN INPUT CURRENT (mA) SHDN SHDN 0.4 20 SHDN 5 0.2 10 0 0 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 TEMPERATURE (°C) TEMPERATURE (°C) SHDN PIN VOLTAGE (V) 1528 TPC10 1528 TPC11 1528 TPC12
SENSE Pin Current Reverse Output Current Current Limit
200 300 6 CURRENT FLOWS INTO SENSE PIN VIN = 0V VOUT = 0V V 175 OUT = VSENSE 250 5 150 200 4 125 100 150 3 75 100 2 OUTPUT CURRENT (μA) SENSE PIN CURRENT (μA) 50 50 SHORT-CIRCUIT CURRENT (A) 1 25 0 0 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 TEMPERATURE (°C) TEMPERATURE (°C) INPUT VOLTAGE (V) 1528 TPC13 1528 TPC14 1528 TPC15
Current Limit Reverse Output Current Ripple Rejection
6 1000 70 TJ = 25°C, VIN = 0V VIN(AVG) = 4.3V 900 VOUT =VSENSE VRIPPLE = 0.5VP-P AT f = 120Hz 5 68 CURRENT FLOWS IL = 1.5A 800 INTO DEVICE 66 4 700 600 64 3 500 62 400 2 300 60 OUTPUT CURRENT (μA) RIPPLE REJECTION (dB) SHORT-CIRCUIT CURRENT (A) 1 200 58 VIN = 7V 100 VOUT = 0V 0 0 56 –50 –25 0 25 50 75 100 125 0 1 2 3 4 5 6 7 8 9 10 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) OUTPUT VOLTAGE (V) TEMPERATURE (°C) 1528 TPC16 1528 TPC17 1528 TPC18 1528fb 5
TYPICAL PERFORMANCE CHARACTERISTICS SHDN Pin Threshold (Off-to-On) SHDN Pin Current SHDN Pin Input Current
2.0 100 25 VSHDN = 0V 1.8 90 1.6 ILOAD = 3A 80 20 1.4 70 1.2 60 15 ILOAD = 1mA 1.0 50 0.8 40 10 PIN THRESHOLD (V) PIN CURRENT (μA) 0.6 30 PIN INPUT CURRENT (mA) SHDN SHDN 0.4 20 SHDN 5 0.2 10 0 0 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 TEMPERATURE (°C) TEMPERATURE (°C) SHDN PIN VOLTAGE (V) 1528 TPC10 1528 TPC11 1528 TPC12
SENSE Pin Current Reverse Output Current Current Limit
200 300 6 CURRENT FLOWS INTO SENSE PIN VIN = 0V VOUT = 0V V 175 OUT = VSENSE 250 5 150 200 4 125 100 150 3 75 100 2 OUTPUT CURRENT (μA) SENSE PIN CURRENT (μA) 50 50 SHORT-CIRCUIT CURRENT (A) 1 25 0 0 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 TEMPERATURE (°C) TEMPERATURE (°C) INPUT VOLTAGE (V) 1528 TPC13 1528 TPC14 1528 TPC15
Current Limit Reverse Output Current Ripple Rejection
6 1000 70 TJ = 25°C, VIN = 0V VIN(AVG) = 4.3V 900 VOUT =VSENSE VRIPPLE = 0.5VP-P AT f = 120Hz 5 68 CURRENT FLOWS IL = 1.5A 800 INTO DEVICE 66 4 700 600 64 3 500 62 400 2 300 60 OUTPUT CURRENT (μA) RIPPLE REJECTION (dB) SHORT-CIRCUIT CURRENT (A) 1 200 58 VIN = 7V 100 VOUT = 0V 0 0 56 –50 –25 0 25 50 75 100 125 0 1 2 3 4 5 6 7 8 9 10 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) OUTPUT VOLTAGE (V) TEMPERATURE (°C) 1528 TPC16 1528 TPC17 1528 TPC18 1528fb 5
