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TPS54318RTET Datasheet(PDF) 5 Page - Texas Instruments |
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TPS54318RTET Datasheet(HTML) 5 Page - Texas Instruments |
5 / 36 page PH VIN 15 14 13 GND 12 11 10 9 8 7 6 5 16 GND VIN PH PH 1 2 3 4 SS Thermal Pad (17) TPS54318 www.ti.com ......................................................................................................................................................................................... SLVS975 – SEPTEMBER 2009 PIN CONFIGURATION QFN16 RTE PACKAGE (TOP VIEW) PIN FUNCTIONS PIN DESCRIPTION NAME NO. AGND 5 Analog Ground should be electrically connected to GND close to the device. BOOT 13 A bootstrap capacitor is required between BOOT and PH. If the voltage on this capacitor is below the minimum required by the BOOT UVLO, the output is forced to switch off until the capacitor is refreshed. COMP 7 Error amplifier output, and input to the output switch current comparator. Connect frequency compensation components to this pin. EN 15 Enable pin, internal pull-up current source. Pull below 1.2 V to disable. Float to enable. Can be used to set the on/off threshold (adjust UVLO) with two additional resistors. GND 3, 4 Power Ground. This pin should be electrically connected directly to the power pad under the IC. PH 10, 11, The source of the internal high side power MOSFET, and drain of the internal low side (synchronous) rectifier 12 MOSFET. PowerPAD 17 GND pin should be connected to the exposed power pad for proper operation. This power pad should be connected to any internal PCB ground plane using multiple vias for good thermal performance. PWRGD 14 An open drain output, asserts low if output voltage is low due to thermal shutdown, overcurrent, over/under-voltage or EN shut down. RT/CLK 8 Resistor Timing or External Clock input pin. SS 9 Slow-start. An external capacitor connected to this pin sets the output voltage rise time. VIN 1, 2, 16 Input supply voltage, 2.95 V to 6 V. VSENSE 6 Inverting node of the transconductance (gm) error amplifier. Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s) :TPS54318 |
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