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TPS54361QDPRTQ1 Datasheet(PDF) 3 Page - Texas Instruments |
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TPS54361QDPRTQ1 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 50 page  BOOT VIN EN SS/TR RT/CLK PWRGD SW GND COMP FB 10 9 1 2 3 4 5 8 7 6 TPS54361-Q1 www.ti.com SLVSCC4A – APRIL 2014 – REVISED APRIL 2014 6 Pin Configuration and Functions 10-Pin SON With PowerPAD DPR Package (Top View) Pin Functions PIN I/O DESCRIPTION NAME NO. A bootstrap capacitor is required between BOOT and SW. If the voltage on this capacitor is below the BOOT 1 O minimum required to operate the high-side MOSFET, the gate drive is switched off until the capacitor is refreshed. This pin is the error amplifier output and input to the output switch current (PWM) comparator. Connect COMP 7 O frequency compensation components to this pin. This pin is the enable pin, with an internal pullup current source. Pull EN below 1.2 V to disable. Float EN EN 3 I to enable. Adjust the input undervoltage lockout with two resistors. See the Enable and Adjust Undervoltage Lockout section. FB 6 I This pin is the Inverting input of the transconductance (gm) error amplifier. GND 8 – Ground VIN 2 I This pin is the input supply voltage with 4.5-V to 60-V operating range. The PWRGD pin is an open drain output that asserts low if the output voltage is out of regulation because PWRGD 10 O of thermal shutdown, dropout, over-voltage, or EN shut down. This pin is the resistor timing and external clock pin. An internal amplifier holds this pin at a fixed voltage when using an external resistor to ground to set the switching frequency. If the pin is pulled above the PLL RT/CLK 5 I upper threshold, a mode change occurs and the pin becomes a synchronization input. The internal amplifier is disabled and the pin is a high impedance clock input to the internal PLL. If clocking edges stop, the internal amplifier is re-enabled and the operating mode returns to resistor frequency programming. This pin is the soft-start and tracking pin. An external capacitor connected to this pin sets the output rise SS/TR 4 I time. Because the voltage on this pin overrides the internal reference, SS/TR can be used for tracking and sequencing. SW 9 O The SW pin is the source of the internal high-side power MOSFET and switching node of the converter. The GND pin must be electrically connected to the exposed pad on the printed circuit board for proper Thermal Pad – operation. Copyright © 2014, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: TPS54361-Q1 |
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