FP613215VB3PTR datasheet(8/9 Pages) FITIPOWER

8 / 9 page

FP6132-1.9 -JAN-2011

FP6132

85T

fitipower integrated technology lnc.

Application Information

The FP6132 series are low dropout linear regulators

that could provide 600mA output current at dropout

voltage about 600mV.

Besides, current limit and on

chip thermal shutdown features provide protection

against any combination of overload or ambient

temperature that could exceed junction temperature.

Output and Input Capacitor

The FP6132 regulator is designed to be stable with a

wide range of output capacitors.

The ESR of the

output capacitor affects stability.

Larger value of the

output capacitor decreases the peak deviations and

provides to improve transition response for larger

current changes.

The

capacitor

types

(aluminum,

ceramic,

and

tantalum) have different characterizations such as

temperature and voltage coefficients.

All ceramic

capacitors are manufactured with a variety of

dielectrics, each with different behavior across

temperature and applications.

Common dielectrics

used are X5R, X7R and Y5V.

It is recommended to

use 1

μF to 10μF X5R or X7R dielectric ceramic

capacitors with 30m

 to 50m ESR range between

device outputs to ground for transient stability.

The

FP6132 is designed to be stable with low ESR

ceramic capacitors and higher values of capacitors

and ESR could improve output stability.

So the ESR of output capacitor is very important

because it generates a zero to provide phase lead

for loop stability.

There are no requirements for the ESR on the input

capacitor, but its voltage and temperature coefficient

have to be considered for device application

environment.

Protection Features

In order to prevent overloading or thermal condition

from damaging device, FP6132 regulator has

internal thermal and current limiting functions

designed to protect the device.

It will rapidly shut

off PMOS pass element during over temperature

condition.

Thermal Consideration

The power handling capability of the device will be

limited by allowable operation junction temperature

(125

C). The power dissipated by the device will

be estimated by PD = IOUT  (VIN-VOUT).

The power

dissipation should be lower than the maximum

power dissipation listed in “Absolute Maximum

Ratings” section.

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