Datasheet LT3013B (Analog Devices) - 3

LT3013B
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TJ = 25°C. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage ILOAD = 250mA l 4 4.5 V ADJ Pin Voltage (Notes 2, 3) VIN = 4V, ILOAD = 1mA 1.225 1.24 1.255 V 4.5V < VIN < 80V, 1mA < ILOAD < 250mA l 1.2 1.24 1.28 V Line Regulation ΔVIN = 4V to 80V, ILOAD = 1mA (Note 2) l 0.1 5 mV Load Regulation (Note 2) V l IN = 4.5V, ΔILOAD = 1mA to 250mA 7 12 mV VIN = 4.5V, ΔILOAD = 1mA to 250mA 25 mV Dropout Voltage ILOAD = 10mA 160 230 mV VIN = VOUT(NOMINAL) ILOAD = 10mA l 300 mV (Notes 4, 5) ILOAD = 50mA 250 340 mV ILOAD = 50mA l 420 mV ILOAD = 250mA 400 490 mV ILOAD = 250mA l 620 mV GND Pin Current ILOAD = 0mA l 65 120 μA VIN = 4.5V ILOAD = 100mA 3 mA (Notes 4, 6) ILOAD = 250mA l 10 18 mA Output Voltage Noise COUT = 10μF, ILOAD = 250mA, BW = 10Hz to 100kHz 100 μVRMS ADJ Pin Bias Current (Note 7) 30 100 nA PWRGD Trip Point % of Nominal Output Voltage, Output Rising l 85 90 94 % PWRGD Trip Point Hysteresis % of Nominal Output Voltage 1.1 % PWRGD Output Low Voltage IPWRGD = 50μA l 140 250 mV CT Pin Charging Current 3.6 6 μA CT Pin Voltage Differential VCT(PWRGD High) – VCT(PWRGD Low) 1.6 V Ripple Rejection VIN = 7V(Avg), VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, ILOAD = 250mA 65 75 dB Current Limit VIN = 7V, VOUT = 0V 400 mA VIN = 4.5V, ΔVOUT = –0.1V (Note 2) l 270 mA Reverse Output Current (Note 8) VOUT = 1.24V, VIN < 1.24V (Note 2) 12 25 μA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 6:
GND pin current is tested with VIN = 4.5V and a current source may cause permanent damage to the device. Exposure to any Absolute load. This means the device is tested while operating close to its dropout Maximum Rating condition for extended periods may affect device region. This is the worst-case GND pin current. The GND pin current will reliability and lifetime. decrease slightly at higher input voltages.
Note 2:
The LT3013B is tested and specifi ed for these conditions with the
Note 7:
ADJ pin bias current fl ows into the ADJ pin. ADJ pin connected to the OUT pin.
Note 8:
Reverse output current is tested with the IN pin grounded and the
Note 3:
Operating conditions are limited by maximum junction OUT pin forced to the rated output voltage. This current fl ows into the OUT temperature. The regulated output voltage specifi cation will not apply pin and out the GND pin. for all possible combinations of input voltage and output current. When
Note 9:
The LT3013BE is guaranteed to meet performance specifi cations operating at maximum input voltage, the output current range must be from 0°C to 125°C operating junction temperature. Specifi cations over limited. When operating at maximum output current, the input voltage the –40°C to 125°C operating junction temperature range are assured by range must be limited. design, characterization and correlation with statistical process controls.
Note 4:
To satisfy requirements for minimum input voltage, the LT3013B is
Note 10:
This IC includes overtemperature protection that is intended tested and specifi ed for these conditions with an external resistor divider to protect the device during momentary overload conditions. Junction (249k bottom, 549k top) for an output voltage of 4V. The external resistor temperature will exceed 125°C when overtemperature protection is active. divider will add a 5μA DC load on the output. Continuous operation above the specifi ed maximum operating junction
Note 5:
Dropout voltage is the minimum input to output voltage differential temperature may impair device reliability. needed to maintain regulation at a specifi ed output current. In dropout, the output voltage will be equal to (VIN – VDROPOUT). 3013bfb 3