Datasheet LT3072 (Analog Devices) - 4

LT3072
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. RMON = 1kΩ, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
SENSE Pin Current VIN = 0.9V, VOUT = 0.6V (Unity Gain) l –1.5 0 1.5 µA (Note 5) VIN = 0.95V, VOUT = 0.65V l 7 12.5 20 µA VIN = 1.45V, VOUT = 1.15V l 82 137.5 215 µA VIN = 1.5V, VOUT = 1.2V (Unity Gain) l –1.5 0 1.5 µA VIN = 2.1V, VOUT = 1.8V l 90 150 235 µA VIN = 2.8V, VOUT = 2.5V l 194 325 508 µA Ground Pin Current VIN = 1.3V, VOUT = 1.0V, IOUT1 = IOUT2 =10mA l 2.6 5.2 mA (Both Channels Enabled) (Note 9) VIN = 1.3V, VOUT = 1.0V, IOUT1 = 10mA, IOUT2 = 2.5A l 3.2 6.4 mA BIAS Pin Current, IOUT = 10mA l 2.8 4.7 mA VIN = 1.3V, IOUT = 100mA l 3.5 5.7 mA VOUT = 1.0V IOUT = 500mA l 4.6 7.3 mA (Note 4) IOUT = 1A l 5.3 8.4 mA IOUT = 2.5A l 7 10.8 mA BIAS Pin Current in Dropout (Notes 4, 8) VBIAS = 5.25V, IOUT = 2.5A l 36 mA BIAS Pin Nap Mode Current VBIAS = 5.25V, EN = 0V l 1.4 2.4 mA Reverse Output Current (Note 10) VBIAS = 2.375V, VIN = 0V, VOUT = 0.6V l 0.02 0.2 mA EN = VBIAS VBIAS = 5.25V, VIN = 0V, VOUT = 2.5V l 0.45 1 mA IMON Output Current IOUT = 2.5A, VIN – VOUT = 0.3V l 791.7 833.3 875 µA IOUT = 0.5A, VIN – VOUT = 0.3V l 137.5 166.7 195.8 µA Adjustable Current Limit (Notes 6) RMON = 1kΩ l 2.79 3.0 3.21 A RMON = 2kΩ l 1.37 1.5 1.63 A RMON = 6kΩ l 0.4 0.5 0.6 A Internal Current Limit (Notes 6, 12) VIN = 0.9V, VOUT = 0V l 3.3 4.2 A VIN – VOUT = 0.3V, ∆VOUT = 100mV l 2.8 A PWRGD VOUT Threshold Percentage of VOUT(NOMINAL), VOUT Rising l 90 93.5 97 % Percentage of VOUT(NOMINAL), VOUT Falling l 85 88.5 92 % PWRGD VOL IPWRGD = 200µA (Fault Condition) l 100 mV PWRGD VOH Leakage VPWRGD = VBIAS = 5.25V l 1 µA TEMP Voltage (Note 3) TJ = 25°C 0.25 V TJ = 125°C 1.25 V TEMP Error (Note 3) 0°C < TJ ≤ 125°C –0.09 0.09 V VBIAS Undervoltage Lockout VBIAS Rising l 2.15 2.37 V VBIAS Falling l 1.75 2.05 V VIN Undervoltage Lockout VIN Rising l 0.43 0.50 0.59 V VIN Undervoltage Lockout Hysteresis 0.08 V VIN – VBIAS Overvoltage Lockout EN = VBIAS = 3.3V, VIN Rising l 150 320 mV EN = VBIAS = 3.3V, VIN Falling l 60 180 mV VIN – VOUT Servo Voltage: VIOC IOUT = 10mA, VOUT ≥ 0.7V l 400 450 500 mV (Note 7) IOUT = 10mA, VOUT ≤ 0.65V l 400 450 550 mV IOUT = 2.5A, VOUT ≥ 0.7V l 250 300 370 mV IOUT = 2.5A, VOUT ≤ 0.65V l 250 300 420 mV VIOC Maximum Output Current VIN = VOUT + 20mV, VIOC Pin Sources Current l 170 270 390 µA VIN = VOUT + 900mV, VIOC Pin Sinks Current l 170 310 390 µA VIOC Transconductance VIN = VOUT + 450mV 0.88 mA/V VIL Input Threshold (Logic-0 State) Input Falling l 0.27 0.33 V VOUTB2, VOUTB1, VOUTB0 VIZ Input Range (Logic-Z State) l 0.45 0.66 V VOUTB2, VOUTB1, VOUTB0 Rev. 0 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Typical Application Related Parts