SLVSDQ8B October 2016 – June 2021 TPS54388C-Q1
PRODUCTION DATA
PIN | I/O(1) | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
AGND | 5 | — | Connect analog ground electrically to GND close to the device. |
BOOT | 13 | O | The device requires a bootstrap capacitor between BOOT and PH. A voltage on this capacitor that is below the minimum required by the BOOT UVLO forces the output to switch off until the capacitor recharges. |
COMP | 7 | O | Error amplifier output, and input to the output-switch current comparator. Connect frequency-compensation components to this pin. |
EN | 15 | I | Enable pin, internal pullup-current source. Pull below 1.2 V to disable. Float to enable. One can use this pin to set the on-off threshold (adjust UVLO) with two additional resistors. |
GND | 3 | — | Power ground. Directly connect this pin electrically to the thermal pad under the device. |
4 | |||
PH | 10 | O | The source of the internal high-side power MOSFET, and drain of the internal low-side (synchronous) rectifier MOSFET |
11 | |||
12 | |||
PWRGD | 14 | O | An open-drain output; asserted low if output voltage is low due to thermal shutdown, overcurrent, over- or undervoltage, or EN shutdown. |
RT/CLK | 8 | I | Resistor-timing or external-clock input pin |
SS/TR | 9 | I | Slow start and tracking. An external capacitor connected to this pin sets the output-voltage rise time. Another use of this pin is for tracking. |
VIN | 1 | I | Input supply voltage, 2.95 V to 6 V |
2 | |||
16 | |||
VSENSE | 6 | I | Inverting node of the transconductance (gm) error amplifier |
Thermal pad | — | Connect the GND pin to the exposed thermal pad for proper operation. Connect this thermal pad to any internal PCB ground planes using multiple vias for good thermal performance. |