Datasheet LT3085 (Analog Devices) - 5

LT3085
TYPICAL PERFORMANCE CHARACTERISTICS Dropout Voltage Dropout Voltage (Minimum Dropout Voltage (Minimum (Minimum IN Voltage) VCONTROL Pin Voltage) VCONTROL Pin Voltage)
400 1.6 1.6 350 1.4 1.4 ILOAD = 500mA ) (mV) T I J = –50°C LOAD = 500mA OUT 300 TAGE 1.2 TAGE 1.2 – V ) (V) I ) (V) LOAD = 100mA IN 250 1.0 1.0 OUT TJ = 125°C OUT 200 – V 0.8 – V 0.8 TAGE (V TJ = 25°C 150 0.6 0.6 I CONTROL CONTROL LOAD = 100mA (V 100 0.4 (V 0.4 MINIMUM CONTROL VOL MINIMUM CONTROL VOL 50 0.2 0.2 MINIMUM IN VOL 0 0 0 –50 –25 0 25 50 75 100 125 150 0 50 100 150 200 250 300 350 400 450 500 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) LOAD CURRENT (mA) TEMPERATURE (°C) 3085 G10 3085 G11 3085 G12
Current Limit Current Limit Load Transient Response
700 700 60 V T OUT = 1.5V J = 25°C 40 CSET = 0.1μF 600 600 VIN = VCONTROL = 3V 20 500 500 VIN = 7V 0 400 VOUT = 0V 400 OUTPUT VOLTAGE DEVIATION (mV) –20 300 300 COUT = 10μF CERAMIC –40 C CURRENT LIMIT (mA) 200 CURRENT LIMIT (mA) 200 OUT = 2.2μF CERAMIC 200 100 100 (mA) 100 0 0 LOAD CURRENT 0 –50 –25 0 25 50 75 100 125 150 0 5 10 15 20 25 30 35 40 0 20 40 60 80 100 120 140 160 180 200 TEMPERATURE (°C) INPUT-TO-OUTPUT DIFFERENTIAL (V) TIME (μs) 3085 G13 3085 G14 3085 G15
Load Transient Response Line Transient Response Turn-On Response
150 100 1.5 100 COUT = 10μF CERAMIC 50 1 50 0 0.5 COUT = 2.2μF CERAMIC 0 –50 VOUT = 1.5V 0 RSET = 100k OUTPUT VOLTAGE DEVIATION (mV) ILOAD = 10mA OUTPUT VOLTAGE (V) CSET = 0 OUTPUT VOLTAGE DEVIATION (mV) –50 C –100 OUT = 2.2μF 8 RLOAD = 2Ω COUT = 2.2μF CERAMIC CERAMIC C –100 SET = 0.1μF 6 CERAMIC 6 500 VIN = VCONTROL = 3V 4 4 VOUT = 1.5V (mA) 250 CSET = 0.1μF 2 IN/CONTROL VOLTAGE (V) 2 IN/CONTROL VOLTAGE (V) LOAD CURRENT 0 0 0 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 0 2 4 6 8 10 12 14 16 18 20 TIME (μs) TIME (μs) TIME (μs) 3085 G16 3085 G17 3085 G18 3085fb 5 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS