Datasheet LTM4614 (Analog Devices) - 3

LTM4614
e lecTrical characTerisTics The
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denotes the specifications which apply over the full internal operating temperature range (Note 2), otherwise specifications are at TA = 25°C. VIN = 5V unless otherwise noted. Refer to Figure 1. Specified as each channel (Note 5). SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IS(VIN) Input Supply Current VIN = 2.375V, VOUT = 1.5V, IOUT = 4A 3.15 A VIN = 5.5V, VOUT = 1.5V, IOUT = 4A 1.35 A IOUT(DC) Output Continuous Current Range VIN = 3.3V, VOUT = 1.5V (Note 4) 0 4 A ∆VOUT(LINE) Line Regulation Accuracy VOUT = 1.5V, VIN from 2.375V to 5.5V, IOUT = 0A l 0.1 0.3 % VOUT ∆VOUT(LOAD) Load Regulation Accuracy VOUT = 1.5V, 0A to 4A (Note 4), VIN = 2.375V to 5.5V V 0°C ≤ T 0.7 1.25 % OUT J ≤ 125°C l 1.2 1.5 % VOUT(AC) Output Ripple Voltage IOUT = 0A, COUT = 100µF (X5R) VIN = 5V, VOUT = 1.5V 12 mVP-P fs Output Ripple Voltage Frequency IOUT = 4A, VIN = 5V, VOUT = 1.5V 1.25 MHz ∆VOUT(START) Turn-On Overshoot COUT = 100µF, VOUT = 1.5V, RUN/SS = 10nF, IOUT = 0A VIN = 3.3V 20 mV VIN = 5V 20 mV tSTART Turn-On Time COUT = 100µF, VOUT = 1.5V, IOUT = 1A Resistive Load, TRACK = VIN and RUN/SS = Float VIN = 5V 0.5 ms ∆VOUT(LS) Peak Deviation for Dynamic Load Load: 0% to 50% to 0% of Full Load, 25 mV COUT = 100µF, VIN = 5V, VOUT = 1.5V tSETTLE Settling Time for Dynamic Load Load: 0% to 50% to 0% of Full Load, 10 µs Step VIN = 5V, VOUT = 1.5V IOUT(PK) Output Current Limit COUT = 100µF VIN = 5V, VOUT = 1.5V 8 A VFB Voltage at FB Pin IOUT = 0A, VOUT = 1.5V 0.792 0.8 0.808 V l 0.788 0.8 0.810 V IFB 0.2 µA VRUN RUN Pin On/Off Threshold 0.6 0.75 0.9 V ITRACK TRACK Pin Current 0.2 µA VTRACK(OFFSET) Offset Voltage TRACK = 0.4V 30 mV VTRACK(RANGE) Tracking Input Range 0 0.8 V RFBHI Resistor Between VOUT and FB Pins 4.96 4.99 5.025 kΩ ∆VPGOOD PGOOD Range ±7.5 % RPGOOD PGOOD Resistance Open-Drain Pull-Down 90 150 Ω
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings temperature consistent with these specifications is determined by specific may cause permanent damage to the device. Exposure to any Absolute operating conditions in conjunction with board layout, the rated package Maximum Rating condition for extended periods may affect device thermal resistance and other environmental factors. reliability and lifetime.
Note 3:
The IC has overtemperature protection that is intended to protect
Note 2:
The LTM4614 is tested under pulsed load conditions such that the device during momentary overload conditions. Junction temperatures TJ ≈ TA. The LTM4614E is guaranteed to meet performance specifications will exceed 125°C when overtemperature is activated. Continuous over the 0°C to 125°C internal operating temperature range. Specifications overtemperature activation can impair long-term reliability. over the –40°C to 125°C internal operating temperature range are assured
Note 4:
See output current derating curves for different VIN, VOUT and TA. by design, characterization and correlation with statistical process
Note 5:
Two channels are tested separately and the specified test controls. The LTM4614I is guaranteed to meet specifications over the full conditions are applied to each channel. internal operating temperature range. Note that the maximum ambient 4614fb 3 Document Outline Features Applications Description 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