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LTC4362CDCB-2-TRMPBF Datasheet(PDF) 5 Page - Linear Technology |
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LTC4362CDCB-2-TRMPBF Datasheet(HTML) 5 Page - Linear Technology |
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5 / 12 page  LTC4362-1/LTC4362-2 5 436212f TYPICAL PERFORMANCE CHARACTERISTICS Normal Start-Up Sequence Turn-On Ramp-Up Entering Sleep Mode PIN FUNCTIONS GATEP: Gate Drive for External P-channel MOSFET. GATEP connects to the gate of an optional external P-channel MOSFET to protect against negative voltages at IN. Inter- nally clamped to 5.8V below VIN. An internal 2M resistor connects this pin to ground. Connect to IN if unused. GND: Device Ground. IN: Supply Voltage Input. Connect this pin to the input power supply. This pin has an overvoltage threshold of 5.8V. After an overvoltage event, this pin must fall below VIN(OV) – ΔVOV to release the overvoltage lockout. During lockout, the internal N-channel MOSFET remains off and the PWRGD pull-down releases. ON: On Control Input. A logic low at ON enables the LTC4362. A logic high at ON activates a low current pull- down on the gate of the internal N-channel MOSFET and causes the LTC4362 to enter a low current sleep mode. An internal 5μA current pulls ON down to ground. Connect to ground or leave open if unused. OUT: Source of Internal N-Channel MOSFET. Connect to load. PWRGD: Power Good Status. Open-drain output with internal 500k resistive pull-up to OUT. Pulls low 65ms after the MOSFET gate ramps above its internal gate high threshold. SENSE, Exposed Pad: Current Sense Node and Internal N-Channel MOSFET Drain. An internal sense resistor between IN and SENSE is used to implement the 1.5A overcurrent threshold. The exposed pad is connected to SENSE and must be soldered to an electrically isolated printed circuit board trace to properly transfer the heat out of the package. To disable the overcurrent function, connect SENSE and the exposed pad to IN. 20ms/DIV VIN 5V/DIV VOUT 5V/DIV ICABLE 0.5A/DIV FIGURE 4 CIRCUIT RIN = 150mΩ, LIN = 0.7μH LOAD = 10Ω, COUT = 10μF 436212 G10 1ms/DIV VIN 5V/DIV VOUT 5V/DIV ICABLE 0.5A/DIV FIGURE 4 CIRCUIT RIN = 150mΩ, LIN = 0.7μH LOAD = 10Ω, COUT = 10μF 436212 G11 50μs/DIV VIN 5V/DIV VOUT 5V/DIV VON 5V/DIV ICABLE 0.5A/DIV FIGURE 4 CIRCUIT RIN = 150mΩ, LIN = 0.7μH LOAD = 10Ω, COUT = 10μF 436212 G12 Specifications are at TA = 25°C, VIN = 5V, VON = 0V unless otherwise noted. |
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Similar Description - LTC4362CDCB-2-TRMPBF |
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