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LTM4619IVPBF Datasheet(PDF) 4 Page - Linear Technology |
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LTM4619IVPBF Datasheet(HTML) 4 Page - Linear Technology |
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4 / 24 page  LTM4619 4 4619f ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS The l denotes the specifications which apply over the full internal operating temperature range, otherwise specifications are at TA = 25°C, VIN = 12V. Per typical application in Figure 18. Specified as each channel. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS fNOM Nominal Frequency VFREQ = 1.2V 450 500 550 kHz fLOW Lowest Frequency VFREQ = 0V 210 250 290 kHz fHIGH Highest Frequency VFREQ ≥ 2.4V 700 780 860 kHz RMODE/PLLIN MODE/PLLIN Input Resistance 250 kΩ IFREQ Frequency Setting Sinking Current Sourcing Current fMODE > fOSC fMODE < fOSC –13 13 μA μA VRUN1, 2 RUN Pin ON/OFF Threshold RUN Rising RUN Falling 1.1 1.02 1.22 1.14 1.35 1.27 V V RFB1, RFB2 Resistor Between VOUT and VFB Pins for Each Channel 60.1 60.4 60.7 kΩ VPGL PGOOD Voltage Low IPGOOD = 2mA 0.1 0.3 V IPGOOD PGOOD Leakage Current VPGOOD = 5V ±2 μA ΔVPGOOD PGOOD Range VFB Ramping Negative VFB Ramping Positive –5 5 –7.5 7.5 –10 10 % % 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 LTM4619E 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 LTM4619I is guaranteed to meet specifications over the full internal operating temperature range. Note that the maximum ambient temperature is determined by specific operating conditions in conjunction with board layout, the rated package thermal resistance and other environmental factors. Note 3: The two outputs are tested separately and the same testing condition is applied to each output. Note 4: 100% tested at wafer level only. Note 5: See Output Current Derating curves for different VIN, VOUT and TA. Efficiency vs Load Current with 5VIN (f = 500kHz for 0.8VOUT, 1.2VOUT and 1.5VOUT) Efficiency vs Load Current with 12VIN (f = 500kHz for 1.2VOUT and 1.5VOUT) Efficiency vs Load Current with 24VIN (f = 500kHz for 1.5VOUT) (Refer to Figures 18 and 19) LOAD CURRENT (A) 0 95 85 90 75 65 80 70 60 55 2.5 1.5 3.5 4619 G01 4 2 0.5 1 3 0.8VOUT 1.2VOUT 1.5VOUT 2.5VOUT 3.3VOUT LOAD CURRENT (A) 0 95 85 90 75 65 80 70 60 55 2.5 1.5 3.5 4619 G02 4 2 0.5 1 3 5VOUT 1.2VOUT 1.5VOUT 2.5VOUT 3.3VOUT LOAD CURRENT (A) 0 95 85 90 75 65 80 70 60 55 50 45 2.5 1.5 3.5 4619 G03 4 2 0.5 1 3 5VOUT 1.5VOUT 2.5VOUT 3.3VOUT |
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