NCP5504, NCV5504

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APPLICATION INFORMATION

Introduction

The NCP5504/NCV5504 are high performance dual

output, 250 mA linear regulators suitable for post regulation

and power sensitive battery−operated applications. They

feature 2.0% accuracy over the operating temperature

range. With one fixed output voltage at 3.3 V, and one

adjustable output voltage ranging from 1.25 V to 5.0 V, the

dropout voltage is 250 mV typical. Additional features, such

as an architecture that allows for low noise on the fixed

output without a bypass capacitor, provides for an attractive

LDO solution for audio visual equipment, instrumentation,

computing and networking applications, and automotive

electronics. It is thermally robust and is offered in a 5 pin

DPAK Pb−Free package.

Capacitor Selection

The recommended input capacitor types are tantalum and

aluminum electrolytic ranging from 4.7

mF to 100 mF. It is

especially required if the power source is located more than

a few inches from the NCP5504/NCV5504. This capacitor

will reduce device sensitivity and enhance the output

transient response time. The PCB layout is very important

traces should be sufficiently wide to minimize noise and

unstable operation.

1.0 nF.

The output capacitor range is between 1.0

mF and 22 mF.

For PCB layout considerations, place the capacitor close to

the output pin and keep the leads short.

Adjustable Output Operation

The application circuit for the adjustable output version is

equation:

Vout2 + 1.25 V * 1 ) R2

R1

In order to maintain high accuracy on the adjustable

output, R1 values should be < 30 k

W.

ORDERING INFORMATION

Device

Package

NCP5504DTRKG

DPAK

(Pb−Free)

2500 / Tape and Reel

NCV5504DTRKG*

DPAK

(Pb−Free)

2500 / Tape and Reel

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

*NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP

Capable