Datasheet LTC3025-1, LTC3025-2, LTC3025-3, LTC3025-4 (Analog Devices) - 4

LTC3025-1/LTC3025-2/ LTC3025-3/LTC3025-4
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 1.5V, VBIAS = 3.6V, COUT = 1µF, CIN = 0.1µF, CBIAS = 0.1µF (all capacitors ceramic) unless otherwise noted. (Note 3) PARAMETER CONDITIONS MIN TYP MAX UNITS
IOUT Continuous Output Current l 500 mA IOUT Current Limit VADJ = 0V(LTC3025-1), 1130 mA VSENSE = 0V(LTC3025-2/LTC3025-3/LTC3025-4) en Output Voltage Noise f = 10Hz to 100kHz, IOUT = 300mA 80 µVRMS VIH SHDN Input High Voltage l 0.9 V VIL SHDN Input Low Voltage l 0.3 V IIH SHDN Input High Current SHDN = 1.2V –1 1 µA IL SHDN Input Low Current SHDN = 0V –1 1 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
For the LTC3025-1, a regulated output voltage will only be available may cause permanent damage to the device. Exposure to any Absolute when the minimum IN and BIAS operating voltages as well as the IN to Maximum Rating condition for extended periods may affect device OUT and BIAS to OUT dropout voltages are all satisfied. For the reliability and lifetime. LTC3025-2/LTC3025-3/LTC3025-4 the minimum IN operating voltage
Note 2:
This IC includes overtemperature protection that is intended assumes IOUT = 500mA. For correct regulation at IOUT < 500mA the to protect the device during momentary overload conditions. Junction minimum IN operating voltage decreases to the maximum VSENSE temperature will exceed 125°C when overtemperature protection is active. Regulation Voltage as IOUT decreases to 0mA (i.e. VINMIN = 1.312V at IOUT Continuous operation above the specified maximum operating junction = 250mA for the LTC3025-2). temperature may impair device reliability.
Note 5:
Operating conditions are limited by maximum junction
Note 3:
The LTC3025-X regulators are tested and specified under pulse temperature. The regulated output voltage specification will not apply load conditions such that T for all possible combinations of input voltage and output current. When J ≈ TA. The LTC3025E-X are guaranteed to meet performance specifications from 0°C and 125°C. Specifications over operating at maximum input voltage, the output current range must be the –40°C to 125°C operating junction temperature range are assured by limited. When operating at maximum output current, the input voltage design, characterization and correlation with statistical process controls. range must be limited. The LTC3025I-X are guaranteed to meet performance specifications over
Note 6:
Dropout voltage is minimum input to output voltage differential the full –40°C to 125°C operating junction temperature range. needed to maintain regulation at a specified output current. In dropout, the output voltage will be equal to VIN – VDROPOUT. 30251234ff 4 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 Package Description Revision History Typical Application Related Parts