Datasheet LTM4615 (Analog Devices) - 4

LTM4615
elecTrical characTerisTics The
l
denotes the specifications which apply over the full internal operating temperature range (Note 2), otherwise specifications are at TA = 25°C, VIN = 5V, LDO_IN = 1.2V unless otherwise noted. Per Typical Application Figure 12. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VLDO Section
VLDO_IN Operating Voltage (Note 3) l 1.14 3.5 V IIN(LDO_IN) Operating Current IOUT = 0mA, VOUT = 1V, EN3 = 1.2V 1 mA IIN(SHDN) Shutdown Current EN3 = 0V, LDO_IN = 1.5V 0.6 20 µA VBOOST3 BOOST3 Output Voltage EN3 = 1.2V 4.8 5 5.2 V VBOOST3(UVLO) Undervoltage Lockout 4.3 V VFB3 FB3 Internal Reference Voltage 1mA ≤ IOUT ≤ 1.5A, 1.14V ≤ VLDO_IN ≤ 3.5V, 0.397 0.4 0.404 V BOOST3 = 5V, 1V ≤ VOUT ≤ 2.59V l 0.395 0.4 0.405 V VLDO_OUT Output Voltage Range 0.4 2.6 V VDO Dropout Voltage VLDO_IN = 1.5V, VFB3 = 0.38V, IOUT = 1.5A (Note 4) 100 250 mV LDO_RHI LDO Top Feedback Resistor 4.96 4.99 5.02 kΩ IOUT Output Current VEN3 = 1.2V l 1.5 A ILIM Output Current Limit (Note 5) 2.5 A en Output Voltage Noise Frequency = 10Hz to 1MHz, ILOAD = 1A 300 µRMS VIH_EN3 EN3 Input High Voltage 1.14V ≤ VLDO_IN ≤ 3.5V l 1 V VIL_EN3 EN3 Input Low Voltage 1.14V ≤ VLDO_IN ≤ 3.5V 0.4 V IIN_EN3 EN3 Input Current –1 1 µA VOL_PGOOD3 PGOOD Low Voltage IPGOOD3 = 2mA 0.1 0.4 V PGOOD Threshold Output Threshold PGOOD3 High to Low –14 –12 –10 % Relative to VFB3 PGOOD3 Low to High –4 –3 –2 %
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
Minimum operating voltage required for regulation is: may cause permanent damage to the device. Exposure to any Absolute VIN ≥ VOUT(MIN) + VDROPOUT Maximum Rating condition for extended periods may affect device
Note 4:
Dropout voltage is the minimum input to output differential needed reliability and lifetime. to maintain regulation at a specified output current. In dropout the output
Note 2:
The LTM4615 is tested under pulsed load conditions such that voltage will be equal to VIN – VDROPOUT . TJ ≈ TA. The LTM4615E is guaranteed to meet performance specifications
Note 5:
The LTM4615 has overtemperature protection that is intended over the 0°C to 125°C internal operating temperature range. Specifications to protect the device during momentary overload conditions. Junction over the –40°C to 125°C internal operating temperature range are assured temperatures will exceed 125°C when overtemperature is activated. by design, characterization and correlation with statistical process Continuous overtemperature activation can impair long-term reliability. controls. The LTM4615I is guaranteed to meet specifications over the full internal operating temperature range. Note that the maximum ambient
Note 6:
See output current derating curves for different VIN, VOUT and TA. temperature is determined by specific operating conditions in conjunction with board layout, the rated package thermal resistance and other environmental factors. 4615fb 4 For more information www.linear.com/LTM4615 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information Package Description Revision History Package Photograph Related Parts