AP7173

1.5A LOW DROPOUT LINEAR REGULATOR WITH

PROGRAMMABLE SOFT-START

AP7173 Rev. 7

1 of 16

OCTOBER 2009

DS31369

www.diodes.com

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2% accuracy over line, load and temperature range

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Power-Good (PG) output for supply monitoring and for

sequencing of other supplies

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Programmable soft-start provides linear voltage startup

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transient response

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Stable with any output capacitor

≥ 2.2µF

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DFN3030-10 and SOP-8L-EP: available in “Green”

molding compound (No Br, Sb)

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Lead-free finish/ RoHS Compliant (Note 1)

The AP7173 is a 1.5A 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.

The AP7173 is available in both DFN3030-10 and SOP-8L-EP

packages.

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PCs, Servers, Modems, and Set-Top-Boxes

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FPGA Applications

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DSP Core and I/O Voltages

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Post-Regulation Applications

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Applications With Sequencing Requirements

Typical Application Circuit

EN

PG

VCC

IN

OUT

FB

SS

GND

AP7173

R1

R2

R3

C1

C2

C3

Figure 1. Typical Application Circuit (Adjustable Output)

Features

General Description

Applications