Datasheet LT3061 (Analog Devices) - 7

LT3061 Series
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Internal Current Limit Internal Current Limit Output Discharge Time
250 250 4.0 TJ = 150°C VIN = 7V COUT = 10µF 225 TJ = 125°C 225 VOUT = 0V 3.5 VIN = VOUT +1V T 200 J = 25°C T 200 J = –40°C 3.0 175 TJ = –55°C 175 150 150 2.5 125 125 2.0 100 100 1.5 CURRENT LIMIT (mA) 75 CURRENT LIMIT (mA) 75 1.0 OUTPUT DISCHARGE 50 50 OUTPUT DISCHARGE TIME (ms) FOLDBACK STARTS 25 25 0.5 0 0 0 0 5 10 15 20 25 30 35 40 45 –75 –50 –25 0 25 50 75 100 125 150 175 0 2 4 6 8 10 12 14 16 18 20 INPUT/OUTPUT VOLTAGE DIFFERENTIAL (V) TEMPERATURE (°C) OUTPUT VOLTAGE (V) 3061 G13 3061 G14 3061 G15
Output Discharge Time Output Discharge vs VOUT Output Discharge vs VOUT COUT = 10µF, VIN = VOUT +1V CREF/BYP = 0 CREF/BYP = 0
7 OUT = 20V OUT = 12V 12V 12V 6 OUT = 5V OUT = 3.3V 10V 5 OUT = 1.2V 8V 20V 20V 6V 15V 4 2V/DIV 5V/DIV 5V 12V 3.3V 3 2V 1.2V 2 0V 0V SHDN: 0 TO 1V SHDN: 0 TO 1V OUTPUT DISCHARGE TIME (ms) 1 3061 G17 3061 G18 1ms/DIV 1ms/DIV VIN = VOUT +1V VIN = VOUT +1V 0 COUT = 10µF COUT = 10µF –75 –50 –25 0 25 50 75 100 125 150 175 IFB-DIVIDER = 5µA IFB-DIVIDER = 5µA TEMPERATURE (°C) 3061 G16
Reverse Output Current Reverse Output Current Input Ripple Rejection
50 150 90 VIN = VSHDN = 2.1V 140 VOUT = VADJ = 3.3V V 45 V OUT = 0.6V ADJ = VOUT 130 VIN = VSHDN = 2.1V 80 40 120 70 COUT = 10µF 110 35 VOUT = 5V 100 IADJ 60 30 90 80 50 25 70 40 20 60 50 30 15 OUTPUT CURRENT (µA) OUTPUT CURRENT (µA) 40 RIPPLE REJECTION (dB) 10 30 20 I 20 LOAD = 100mA 5 IOUT 10 C COUT = 3.3µF 10 REF/BYP = CFF = 0 VIN = VOUT +1.5V +50mVRMS RIPPLE 0 0 0 0 2 4 6 8 10 12 14 16 18 20 –75 –50 –25 0 25 50 75 100 125 150 175 10 100 1k 10k 100k 1M 10M VOUT (V) TEMPERATURE (°C) FREQUENCY (Hz) 3061 G19 3061 G20 3061 G21 3061fb For more information www.linear.com/LT3061 7