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LTC3588IMSE-1PBF Datasheet(PDF) 7 Page - Linear Technology |
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LTC3588IMSE-1PBF Datasheet(HTML) 7 Page - Linear Technology |
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7 / 20 page  LTC3588-1 7 35881f PIN FUNCTIONS PZ1 (Pin 1): Input connection for piezoelectric element or other AC source (used in conjunction with PZ2). PZ2 (Pin 2): Input connection for piezoelectric element or other AC source (used in conjunction with PZ1). CAP (Pin 3): Internal rail referenced to VIN to serve as gate drive for buck PMOS switch. A 1μF capacitor should be connected between CAP and VIN. This pin is not intended for use as an external system rail. VIN (Pin 4): Rectified Input Voltage. A capacitor on this pin serves as an energy reservoir and input supply for the buck regulator. The VIN voltage is internally clamped to a maximum of 20V (typical). SW (Pin 5): Switch Pin for the Buck Switching Regulator. A 10μH or larger inductor should be connected from SW to VOUT. VOUT (Pin 6): Sense pin used to monitor the output volt- age and adjust it through internal feedback. VIN2 (Pin 7): Internal low voltage rail to serve as gate drive for buck NMOS switch. Also serves as a logic high rail for output voltage select bits D0 and D1. A 4.7μF capacitor should be connected from VIN2 to GND. This pin is not intended for use as an external system rail. D1 (Pin 8): Output Voltage Select Bit. D1 should be tied high to VIN2 or low to GND to select desired VOUT (see Table 1). D0 (Pin 9): Output Voltage Select Bit. D0 should be tied high to VIN2 or low to GND to select desired VOUT (see Table 1). PGOOD (Pin 10): Power good output is logic high when VOUT is above 92% of the target value. The logic high is referenced to the VOUT rail. GND (Exposed Pad Pin 11): Ground. The Exposed Pad should be connected to a continuous ground plane on the second layer of the printed circuit board by several vias directly under the LTC3588-1. |
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