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LTC3611IWP-PBF Datasheet(PDF) 4 Page - Linear Technology |
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LTC3611IWP-PBF Datasheet(HTML) 4 Page - Linear Technology |
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4 / 24 page  LTC3611 4 3611fb SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Internal VCC Regulator VINTVCC Internal VCC Voltage 6V < VIN < 30V, VEXTVCC = 4V l 4.7 5 5.6 V ΔVLDO(LOADREG) Internal VCC Load Regulation ICC = 0mA to 20mA, VEXTVCC = 4V –0.1 ±2 % VEXTVCC EXTVCC Switchover Voltage ICC = 20mA, VEXTVCC Rising l 4.5 4.7 V ΔVEXTVCC EXTVCC Switch Drop Voltage ICC = 20mA, VEXTVCC = 5V 150 300 m/V ΔVEXTVCC(HYS) EXTVCC Switchover Hysteresis 500 m/V PGOOD Output ΔVFBH PGOOD Upper Threshold VFB Rising 7 10 13 % ΔVFBL PGOOD Lower Threshold VFB Falling –7 –10 –13 % ΔVFB(HYS) PGOOD Hysteresis VFB Returning 1 2.5 % VPGL PGOOD Low Voltage IPGOOD = 5mA 0.15 0.4 V 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: TJ is calculated from the ambient temperature TA and power dissipation PD as follows: TJ = TA + (PD • 28°C/W) (θJA is simulated per JESD51-7 high effective thermal conductivity test board) θJC = 1°C/W (θJC is simulated when heatsink is applied at the bottom of the package) Note 3: The LTC3611 is tested in a feedback loop that adjusts VFB to achieve a specified error amplifier output voltage (ITH). The specification at 85°C is not tested in production. This specification is assured by design, characterization, and correlation to testing at 125°C. Note 4: The LTC3611E is guaranteed to meet performance specifications from 0°C to 125°C. Specifications over the –40°C to 125°C operating temperature range are assured by design, characterization and correlation with statistical process controls. The LTC3611I is guaranteed over the full –40°C to 125°C operating temperature range. TYPICAL PERFORMANCE CHARACTERISTICS Transient Response Transient Response (Discontinuous Mode) Start-Up VIN = 25V VOUT = 2.5V RLOAD = 0.5Ω FIGURE 6 CIRCUIT 3611 G03 40ms/DIV RUN/SS 2V/DIV VOUT 1V/DIV IL 5A/DIV LOAD = 1A TO 10A VIN = 25V VOUT = 2.5V FCB = INTVCC FIGURE 6 CIRCUIT 3611 G02 VOUT 200mV/DIV IL 5A/DIV ILOAD 5A/DIV 40μs/DIV LOAD STEP 0A TO 8A VIN = 25V VOUT = 2.5V FCB = 0 FIGURE 6 CIRCUIT 3611 G01 40μs/DIV VOUT 200mV/DIV IL 5A/DIV ILOAD 5A/DIV ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 15V unless otherwise noted. |
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