Datasheet LT3012B (Analog Devices) - 3

LT3012B
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25
°
C. PARAMETER CONDITIONS MIN TYP MAX UNITS
Dropout Voltage ILOAD = 10mA 160 230 mV VIN = VOUT(NOMINAL) ILOAD = 10mA ● 300 mV (Notes 4, 5) ILOAD = 50mA 250 340 mV ILOAD = 50mA ● 420 mV ILOAD = 250mA 400 490 mV ILOAD = 250mA ● 620 mV GND Pin Current ILOAD = 0mA ● 40 100 µA VIN = 4.5V ILOAD = 100mA 3 mA (Notes 4, 6) ILOAD = 250mA ● 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 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, ∆VOUT = –0.1V (Note 2) ● 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 LT3012B is tested and specified for these conditions with the
Note 7:
ADJ pin bias current flows 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 flows into the OUT temperature. The regulated output voltage specification will not apply for pin and out the GND pin. all possible combinations of input voltage and output current. When
Note 9:
The LT3012BE is guaranteed to meet performance specifications operating at maximum input voltage, the output current range must be from 0°C to 125°C operating junction temperature. Specifications 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 LT3012B
Note 10:
This IC includes overtemperature protection that is intended to is tested and specified for these conditions with an external resistor divider 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 divider will add a 5µA DC load on the output. active. Continuous operation above the specified maximum operating
Note 5:
Dropout voltage is the minimum input to output voltage differential junction temperature may impair device reliability. needed to maintain regulation at a specified output current. In dropout, the output voltage will be equal to (VIN – VDROPOUT). 3012bf 3