Datasheet LT3091 (Analog Devices) - 4

LT3091
e lecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. PARAMETER CONDITIONS MIN TYP MAX UNITS
Dropout Voltage ILOAD = 1mA 173 225 mV VIN = VOUT(NOMINAL) ILOAD = 1mA l 270 mV (Note 7) ILOAD = 100mA 176 225 mV ILOAD = 100mA l 280 mV ILOAD = 500mA 185 230 mV ILOAD = 500mA l 320 mV DFN and TSSOP ILOAD = 1.5A 300 360 mV ILOAD = 1.5A l 450 mV TO-220 and DD-Pak ILOAD = 1.5A 360 420 mV ILOAD = 1.5A l 525 mV GND Pin Current ILOAD = 20μA l 1.2 2.0 mA VIN = VOUT(NOMINAL) ILOAD = 1mA l 1.2 2.0 mA (Note 8) ILOAD = 100mA l 2.6 5.5 mA ILOAD = 500mA l 9.3 20 mA ILOAD = 1.5A l 40 80 mA Error Amplifier RMS Output ILOAD = 1.5A, BW = 10Hz to 100kHz, COUT = 10μF, 18 μVRMS Noise (Note 12) CSET = 0.1μF Reference Current RMS BW = 10Hz to 100kHz 10 nARMS Output Noise (Note 12) Ripple Rejection VRIPPLE = 500mVP-P, fRIPPLE = 120Hz, ILOAD = 100mA, COUT = 10μF, CSET = 0.47μF 70 85 dB VIN – VOUT = –1.5V (Avg) VRIPPLE = 50mVP-P, fRIPPLE = 10kHz, ILOAD = 1.5A, COUT = 10μF, CSET = 0.47μF 45 dB VRIPPLE = 50mVP-P, fRIPPLE = 1MHz, ILOAD = 1.5A, COUT = 10μF, CSET = 0.47μF 20 dB SHDN Pin Turn-ON Positive SHDN Rising l 1.14 1.23 1.32 V Threshold Negative SHDN Rising (in Magnitude) l –1.36 –1.27 –1.18 V SHDN Pin Hysteresis Positive SHDN Hysteresis 180 mV Negative SHDN Hysteresis 190 mV SHDN Pin Current VSHDN = 0V ±1 µA (Note 10) VSHDN = 15V 21 30 µA VSHDN = –15V –7 –4.5 µA Quiescent Current in VIN = –6V, VSHDN = 0V 0.1 1 µA Shutdown VIN = –6V, VSHDN = 0V l 20 µA Internal Current Limit VIN = –1.9V, VOUT = 0V l 1600 1900 2200 mA (Note 13) VIN = –13V, VOUT = 0V 840 mA VIN = –36V, VOUT = 0V l 20 65 120 mA VIN = –1.9V, ∆VOUT < 10mV l 1550 1850 2150 mA Programmable Current Programmable Scale Factor: –36V < VIN < –1.9V, 20 A•kΩ Limit IOUT > 100mA (Note 14) Max IOUT: VIN = –1.9V, RILIM = 13.3k l 1.35 1.5 1.65 A Max IOUT: VIN = –1.9V, RILIM = 40k l 450 500 550 mA Positive Current Monitor Positive Current Monitoring (IMONP) Scale Factor 0.25 mA/A (Note 15) IOUT = 500mA, VIN = –2.5V, VIMONN = 2V, VIMONP = 0V l 113 125 137 µA IOUT = 1.5A, VIN = –2.5V, VIMONN = 2V, VIMONP = 0V l 338 375 412 µA Negative Current Monitor Negative Current Monitoring (IMONN) Scale Factor 0.5 mA/A IOUT = 500mA, VIN = –2.5V, VIMONN = 0V, VIMONP = –2.5V l 225 250 275 µA IOUT = 1.5A, VIN = –2.5V, VIMONN = 0V, VIMONP = –2.5V l 675 750 825 µA Minimum Required Load –36V < VIN < –1.9V l 20 μA Current (Note 4) Thermal Regulation ISET 10ms Pulse 0.04 %/W 3091fa 4 For more information www.linear.com/LT3091 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