SLUSG11A March   2025  – October 2025 TPS92544-Q1

PRODUCTION DATA  

  1.   1
  2. 1Features
  3. 2Applications
  4. 3Description
  5. 4Pin Configuration and Functions
  6. 5Revision History
  7. 6Mechanical, Packaging, and Orderable Information
    1. 6.1 Package Option Addendum
    2. 6.2 Tape and Reel Information

4 Pin Configuration and Functions

TPS92544-Q1 PKD Package48-Pin HTQFP (Top-Exposed PAD)Top ViewFigure 4-1 PKD Package48-Pin HTQFP (Top-Exposed PAD)Top View
TPS92544-Q1 PHP Package48-Pin HTQFP (Bottom-Exposed PAD)Top ViewFigure 4-2 PHP Package48-Pin HTQFP (Bottom-Exposed PAD)Top View
Table 4-1 Pin Functions
PINI/ODESCRIPTION
NAMENO.
PKD/PHP
BOOTBCK19PSupply input for BUCK high-side MOSFET gate drive circuit. Connect a ceramic capacitor between BOOTBCK and SWBCK pins. An internal diode is connected between VDD and BOOTBCK.
BOOTBST33PSupply input for BOOST high-side MOSFET gate drive circuit. Connect a ceramic capacitor between BOOTBST and SWBST pins. An internal diode is connected between VDD and BOOTBST.
CMPBCK25I/OOutput of BUCK internal transconductance error amplifier. Connect an integral compensation network to ensure stability.
CMPBST41I/OOutput of BOOST internal transconductance error amplifier. Connect a proportional-integral compensation network to ensure stability.
CSN24INegative input (–) of internal rail-to-rail transconductance error amplifier. Connect directly to the negative node of the LED current sense resistor, RCS.
CSP23IPositive input (+) of internal rail-to-rail transconductance error amplifier. Connect directly to the positive node of the LED current sense resistor, RCS.
DIO0 6 I/O Digital IO. The pin can be configured as digital input, or digital output.
DIO1 8 I/O
EN45IHardware enable. Pull this pin low to enter shutdown.
GND43GSignal and analog ground. Return for the internal voltage reference and analog circuits. Connect to circuit ground to complete return path.
GNDA40
HGBST31I/OBOOST high side gate driver output.
ISN37ONegative input (–) of BOOST current sense amplifier. Connect directly to the current sense resistor, RIS.
ISP38IPositive input (+) of BOOST current sense amplifier. Connect directly to the current sense resistor, RIS.
LGBST36I/OBOOST low side gate driver output.
MPIO048I/OMulti-purpose IO. The pin can be configured as an ADC input, digital input, or digital output. MPIO0 is used to enter CTM.
MPIO11I/O Multi-purpose IO. The pin can be configured as an ADC input, digital input, or digital output.
MPIO22I/O
MPIO33I/O
MPIO4 4 I/O
NC1, NC2, NC3, NC4, NC5, NC6, NC7, NC8, NC9, NC10, NC11, NC12, NC13, NC14, NC15, NC16, NC175, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 22, 27, 30, 34, 39NCDo not connect. Can be connected to ground.
PGNDBCK26GGround return for BUCK low-side MOSFET
PGNDBST35GGround return for BOOST high-side gate driver
RX47IUART receive data input. Connect to RX of CAN transceiver.
SWBCK20, 21PSwitching output of the BUCK regulator. Internally connected to both power MOSFETs. Connect to the power inductor.
SWBST32PSwitch node of the BOOST controller.
TX46OUART transmit data output. Connect to TX of CAN transceiver.
VBCK29PPower inputs and connections to BUCK high-side MOSFET drain node. Connect to the BOOST output voltage and bypass capacitors CIN. The path from the VBCK pin to high frequency bypass CIN and PGND must be as short as possible.
VBCKA28PPower to internal analog block of BUCK regulator. Connect to VBCK pin and high frequency bypass capacitor.
VDD44PDigital input supply voltage. Locally decouple to GND using a 2.2µF to 4.7µF ceramic capacitor located close to the device.
VDDA42PAnalog input supply voltage. Locally decouple to GND using a 100nF to 1µF ceramic capacitor located close to the device.