AP7173 - 1.5A Very-Low Dropout Linear Regulator

The AP7173 is a 1.5A ultra-low-dropout (LDO) linear regulator that features a user-programmable soft-start, an enable input and a power-good output.

The soft-start reduces inrush current of the load capacitors and minimizes stress on the input power source during start-up. The enable input and power-good output allow users to configure power management solutions that can meet the sequencing requirements of FPGAs, DSPs, and other applications with different start-up and power-down requirements.

 

The AP7173 is stable with any type of output capacitor of 2.2μF or more. A precision reference and feedback control deliver 2% accuracy over load, line, and operating temperature ranges.

 

Features:

  • Low VIN and wide VIN range: 1.0V to 5.5V
  • Bias voltage (VVCC) range: 2.7V to 5.5V
  • Low VOUT range: 0.8V to 3.3V
  • Low dropout: 220mV typical at 1.5A, VVCC = 5V
  • 2% accuracy over line, load and temperature range
  • Power-Good (PG) output for supply monitoring and for sequencing of other supplies
  • Programmable soft-start provides linear voltage startup
  • Bias supply permits low VIN operation with good transient response
  • Stable with any output capacitor ≥ 2.2 µF

Block Diagram

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