Datasheet LT3045-1 (Analog Devices) - 4

LT3045-1
ELECTRICAL 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
EN/UV Pin Current VEN/UV = 0V, VIN = 20V l ±1 µA VEN/UV = 1.24V, VIN = 20V 0.03 µA VEN/UV = 20V, VIN = 0V l 8 15 µA Quiescent Current in VIN = 6V 0.3 1 µA Shutdown (VEN/UV = 0V) l 10 µA Internal Current Limit VIN = 2V, VOUT = 0V l 570 710 850 mA (Note 12) VIN = 12V, VOUT = 0V 700 mA VIN = 20V, VOUT = 0V l 230 330 430 mA Programmable Programming Scale Factor: 2V < VIN < 20V (Note 11) 150 mA • kΩ Current Limit VIN = 2V, VOUT = 0V, RILIM = 300Ω l 450 500 550 mA VIN = 2V, VOUT = 0V, RILIM = 1.5kΩ l 90 100 110 mA PGFB Trip Point PGFB Trip Point Rising l 291 300 309 mV PGFB Hysteresis PGFB Trip Point Hysteresis 7 mV PGFB Pin Current VIN = 2V, VPGFB = 300mV 25 nA PG Output Low Voltage IPG = 100µA l 30 100 mV PG Leakage Current VPG = 20V l 1 µA Reverse Input Current VIN = –20V, VEN/UV = 0V, VOUT = 0V, VSET = 0V l 100 µA Reverse Output Current VIN = 0, VOUT = 5V, SET = Open 14 25 µA Minimum Load Required VOUT < 1V l 10 µA (Note 13) Thermal Shutdown TJ Rising 165 °C Hysteresis 8 °C Start-Up Time VOUT(NOM) = 5V, ILOAD = 500mA, CSET = 0.47µF, VIN = 6V, VPGFB = 6V 55 ms VOUT(NOM) = 5V, ILOAD = 500mA, CSET = 4.7µF, VIN = 6V, VPGFB = 6V 550 ms VOUT(NOM) = 5V, ILOAD = 500mA, CSET = 4.7µF, VIN = 6V, RPG1 = 50kΩ, 10 ms RPG2 = 700kΩ (with Fast Start-Up to 90% of VOUT) Thermal Regulation 10ms Pulse –0.01 %/W Input-to-Output VIOC Amplifier Gain 1 V/V Differential Voltage Control (VIOC) (Note 15) VIOC Pin Voltage Range: VOUT >  VVIOC + 0.5V l 1 4 V VIOC Pin Voltage: VOUT ≤ 1.5V, VIN = 2.5V 1 V VIOC Pin Source Current l 200 µA VIOC Pin Sink Current: VIN ≥ 2.5V l 15 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
OUTS ties directly to OUT. may cause permanent damage to the device. Exposure to any Absolute
Note 5:
Dropout voltage is the minimum input-to-output differential Maximum Rating condition for extended periods may affect device voltage needed to maintain regulation at a specified output current. The reliability and lifetime. dropout voltage is measured when output is 1% out of regulation. This
Note 2:
The EN/UV pin threshold must be met to ensure device operation. definition results in a higher dropout voltage compared to hard dropout —
Note 3:
Maximum junction temperature limits operating conditions. The which is measured when VIN = VOUT(NOMINAL). For lower output voltages, regulated output voltage specification does not apply for all possible below 1.5V, dropout voltage is limited by the minimum input voltage combinations of input voltage and output current, especially due to the specification. Please consult the Typical Performance Characteristics internal current limit foldback which starts to decrease current limit at for curves of dropout voltage as a function of output load current and V temperature measured in a typical application circuit. IN – VOUT > 12V. If operating at maximum output current, limit the input voltage range. If operating at the maximum input voltage, limit the output current range. 30451fa 4 For more information www.linear.com/LT3045-1 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 Revision History Typical Application Related Parts