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LTM4622 Datasheet(PDF) 3 Page - Linear Technology |
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LTM4622 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 26 page  LTM4622 3 4622f For more information www.linear.com/LTM4622 ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTM4622 is tested under pulsed load conditions such that TJ ≈ TA. The LTM4622E is guaranteed to meet performance specifications over the 0°C to 125°C internal operating temperature range. Specifications over the full –40°C to 125°C internal operating temperature range are assured by design, characterization and correlation with statistical process controls. The LTM4622I is guaranteed to meet specifications over the full –40°C to 125°C internal operating temperature range. Note that 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. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS ΔVOUT (Load)/VOUT Load Regulation Accuracy VOUT = 1.5V, IOUT = 0A to 2.5A l 0.2 1.0 % VOUT(AC) Output Ripple Voltage IOUT = 0A, COUT = 100µF Ceramic, VIN = 12V, VOUT = 1.5V 5 mV ΔVOUT(START) Turn-On Overshoot IOUT = 0A, COUT = 100µF Ceramic, VIN = 12V, VOUT = 1.5V 30 mV tSTART Turn-On Time COUT = 100µF Ceramic, No Load, TRACK/SS = 0.01µF, VIN = 12V, VOUT = 1.5V 2.5 ms ΔVOUTLS Peak Deviation for Dynamic Load Load: 0% to 50% to 0% of Full Load, COUT = 100µF Ceramic, VIN = 12V, VOUT = 1.5V 100 mV tSETTLE Settling Time for Dynamic Load Step Load: 0% to 50% to 0% of Full Load, COUT = 100µF Ceramic, VIN = 12V, VOUT = 1.5V 20 µs IOUTPK Output Current Limit VIN = 12V, VOUT = 1.5V 3 4 A VFB Voltage at FB Pin IOUT = 0A, VOUT = 1.5V l 0.592 0.60 0.608 V IFB Current at FB Pin (Note 4) ±30 nA RFBHI Resistor Between VOUT and FB Pins 60.00 60.40 60.80 kΩ ITRACK/SS Track Pin Soft-Start Pull-Up Current TRACK/SS = 0V 1.4 µA tSS Internal Soft-Start Time 10% to 90% Rise Time (Note 4) 400 700 μs tON(MIN) Minimum On-Time (Note 4) 20 ns tOFF(MIN) Minimum Off-Time (Note 4) 45 ns VPGOOD PGOOD Trip Level VFB With Respect to Set Output VFB Ramping Negative VFB Ramping Positive –8 8 –14 14 % % RPGOOD PGOOD Pull-Down Resistance 1mA Load 20 Ω VINTVCC Internal VCC Voltage VIN = 3.6V to 20V 3.1 3.3 3.5 V VINTVCC Load Reg INTVCC Load Regulation ICC = 0mA to 50mA, VIN = 3.6V to 20V 1.3 % fOSC Oscillator Frequency 1 MHz fSYNC SYNC Capture Range With Respect to Set Frequency ±30 % IMODE MODE Input Current MODE = INTVCC –1.5 µA Note 3: See output current derating curves for different VIN, VOUT and TA. Note 4: 100% tested at wafer level. Note 5: This IC includes overtemperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 125°C when overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. The l denotes the specifications which apply over the full internal operating temperature range (Note 2). Specified as each individual output channel at TA = 25°C, VIN = 12V, unless otherwise noted per the typical application shown in Figure 24. |
Similar Part No. - LTM4622_15 |
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Similar Description - LTM4622_15 |
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