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AP7173

1.5

LOW DROPOUT LINEAR REGULATOR WITH

PROGRAMMABLE SOFT-START

AP7173

Document number: DS31369 Rev. 9 - 2

1 of 15

www.diodes.com

April 2011

Description

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 SO-8EP packages.

Pin Assignments

Features

● Low V

and wide V

range: 1.0V to 5.5V

● Bias voltage (V

VCC

) range: 2.7V to 5.5V

● Low V

OUT

range: 0.8V to 3.3V

● Low dropout: 165mV typical at 1.5A, V

VCC

= 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 V

operation with good transient

response

● Stable with any output capacitor ≥ 2.2µF

● DFN3030-10 and SO-8EP: available in “Green” molding

compound (No Br, Sb)

● Lead-free finish/ RoHS Compliant (Note 1)

Applications

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

• FPGA Applications

• DSP Core and I/O Voltages

• Post-Regulation Applications

• Applications With Sequencing Requirements

Note: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at

http://www.diodes.com/products/lead_free.html.

Typical Application Circuit

VCC

OUT

GND

AP7173

OUT

VCC

Figure 1. Typical Application Circuit (Adjustable Output)

( Top View )

GND

OUT

VCC

OUT

DFN3030-10

SO-8EP

SSVCC

GND

OUT

(Top View)

1 2 3 4 5 6 ... 14 15

Résumé du contenu

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Page 7 - PG Current(mA)

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Page 9 - Temperature(

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Page 14 - For DFN3030-10

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