Texas Instruments TPS744 3.0A Low-Dropout (LDO) Linear Regulators

Texas Instruments TPS744 3.0A Low-Dropout (LDO) Linear Regulators provide an easy-to-use, robust power management design for various applications. Stress on the input power source is reduced by the user-programmable soft-start by reducing capacitive inrush current on start-up. The soft-start is monotonic and is well-suited for powering many different types of processors and ASICs. The enable input and power-good output allow easy sequencing with external regulators. This complete flexibility permits the user to configure a solution that meets the sequencing requirements of DSPs, FPGAs, and other applications with special start-up requirements.

A precision reference and error amplifier delivers 1% accuracy over load, line, temperature, and process. The Texas Instruments TPS744 is stable with any type of capacitor with a 2.2µF or greater capacitance (new chip) and is fully specified from –40°C to 125°C.

Features

Input voltage range of 1.1V to 5.5V
Adjustable start-up in-rush control
1% accuracy over line, load, and temperature
V_BIAS permits low V_IN operation with good transient response
Adjustable output of 0.8V to 3.6V
Ultra-Low Dropout
- 115mV (legacy chip) at 3.0A (typ.)
- 120mV (new chip) at 3.0A (typ.)

Stable with any output capacitor ≥ 2.2µF (new chip)
Stable with any or no output capacitor (legacy chip)
Power-good (PG) output allows supply monitoring or provides a sequencing signal for other supplies
Packages
- 5mm × 5mm × 1mm VQFN (RGW)
- 3.5mm × 3.5mm VQFN (RGR), and DDPAK-7 (Legacy chip only)