TPS62040DRCR vs TPS62044DRCR

The TPS62040DRCR and TPS62044DRCR are both 1.2 A step-down converters from Texas Instruments in a 10-pin VSON package. The primary difference is the fixed output voltage option and the associated feedback configuration. The TPS62040DRCR is an adjustable-output device that uses an external resistor divider on the FB pin, while the TPS62044DRCR is a fixed-output version. Designers must confirm the exact output voltage and feedback topology from the respective datasheets before comparing them in a target design.

Both devices are offered in the same 10-pin VSON (DRC) package, so the package footprint and pin count are identical. However, pin-to-pin compatibility in a specific application depends on the function of each pin, especially the feedback and output voltage setting pins. The TPS62040DRCR uses an external feedback divider, whereas the TPS62044DRCR is a fixed-output version, so the surrounding components and PCB connections may differ. Always verify pin functions against the official datasheets before substituting one for the other.

They should not be treated as direct drop-in replacements without validation. Although both are 1.2 A synchronous step-down converters in the same package, the TPS62040DRCR is adjustable via an external resistor divider, while the TPS62044DRCR provides a fixed output voltage. The feedback network, output voltage accuracy, and external component selection can differ. A substitution requires checking the datasheet parameters, output voltage requirements, and the existing feedback circuit.

Both devices are part of the TPS6204x family of step-down converters. According to Texas Instruments documentation, the TPS62040 and TPS62044 operate from a 2.5 V to 6 V input voltage range. The exact limits and any derating conditions should be confirmed in the official datasheet for each specific device.

Both the TPS62040DRCR and TPS62044DRCR are rated for up to 1.2 A of continuous output current. The actual deliverable current depends on input voltage, output voltage, ambient temperature, and thermal layout. Refer to the manufacturer datasheet for the safe operating area and thermal derating curves.

The TPS62040 and TPS62044 are fixed-frequency PWM step-down converters. Texas Instruments specifies a nominal switching frequency for the TPS6204x family, typically around 1.25 MHz. Because the exact value and any frequency variation should be verified from the official datasheet, designers should confirm the switching frequency for each specific device before comparing EMI or filter design implications.

These devices are typically used in portable and battery-powered equipment, point-of-load regulation, and low-voltage digital core or I/O supplies where a compact 1.2 A step-down converter is required. The TPS62040DRCR is suited to applications needing an adjustable output voltage, while the TPS62044DRCR is suited to designs requiring a fixed output voltage. The final choice depends on the required output voltage, board space, and external component count.

Both devices are supplied in a 10-pin VSON package, which is a thermally enhanced package intended for space-constrained designs. Thermal performance depends on the PCB copper area, thermal vias, and ambient temperature. The maximum power dissipation and thermal resistance values should be taken from the official datasheet, and the layout should follow the manufacturer recommendations for the DRC package.