Datasheet LTC3104 (Analog Devices) - 4

LTC3104
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = VINLDO = 10V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
LDO Feedback Input Current l 1 20 nA Dropout Voltage (VDO) ILDO = 10mA 150 mV Output Current l 10 mA Output Current—Short Circuit VLDO = 0V l 15 20 mA Quiescent Current, VINLDO VIN = VINLDO = RUNLDO = 10V 0.3 µA Line Regulation VINLDO = 2.5V to 15V, ILDO = 1mA 0.1 % Load Regulation ILDO = 1mA to 10mA 0.75 % RUNLDO Threshold l 0.5 0.8 1.2 V RUNLDO Input Current RUNLDO = 1.2V 0.01 0.3 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
This IC includes overtemperature protection that is intended to may cause permanent damage to the device. Exposure to any Absolute protect the device during momentary overload conditions. The maximum Maximum Rating condition for extended periods may affect device rated junction temperature will be exceeded when this protection is active. reliability and lifetime. Continuous operation above the specified absolute maximum operating
Note 2:
The LTC3104 is tested under pulsed load conditions such that junction temperature may impair device reliability or permanently damage T the device. J ≈ TA. The LTC3104E is guaranteed to meet specifications from 0°C to 85°C junction temperature. Specifications over the –40°C to
Note 4:
Specification is guaranteed by design. 125°C operating junction temperature range are assured by design,
Note 5:
The LTC3104 has a proprietary test mode that allows testing in a characterization and correlation with statistical process controls. The feedback loop which servos VFB to the balance point for the error amplifier. LTC3104I is guaranteed over the full –40°C to 125°C operating junction temperature range. The junction temperature (TJ) is calculated from the ambient temperature (TA) and power dissipation (PD) according to the formula: TJ = TA + (PD)( θJA°C/W) where θJA is the package thermal impedance. Note the maximum ambient temperature consistent with these specifications is determined by specific operating conditions in conjunction with board layout, the rated package thermal resistance and other environmental factors.
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted Application No-Load Input Current Efficiency vs Input Voltage vs Supply Voltage (Automatic Efficiency vs Output Current (Automatic Burst Mode Operation) Burst Mode Operation)
100 100 4.0 VOUT = 3.3V V FRONT PAGE APPLICATION 95 OUT = 2.2V L = 15µH 95 L = 10µH LDO ENABLED 90 90 3.5 85 85 80 80 75 75 3.0 70 70 EFFICIENCY (%) EFFICIENCY (%) 65 65 ILOAD = 300mA INPUT CURRENT (µA) V I 2.5 60 IN = 4V LOAD = 100mA V 60 IN = 7V ILOAD = 10mA 55 VIN = 10V 55 ILOAD = 1mA VIN = 15V ILOAD = 100µA 50 50 2.0 0.0001 0.001 0.01 0.1 1 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 16 18 OUTPUT CURRENT (A) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3104 G01 3104 G02 3104 G03 3104fa 4 For more information www.linear.com/LTC3104 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts