SP6223EK-L datasheet(4/14 Pages) SIPEX

Part #	SP6223EK-L

Description	50mA and 150mA CMOS Linear Regulators

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Manufacturer	SIPEX [Sipex Corporation]

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Date: 6/15/06 Rev AB

SP6222/6223 50/150mA CMOS Linear Regulators

General Overview

The SP6222 and SP6223 are CMOS

LDOs designed to meet a broad range

of low voltage applications that require

accuracy and ease of use. The

SP6222 offers a 50mA output current

while the SP6223 offers an output

current of 150mA. The SP6222 is

available in a 2.5V or 3.0V fixed output

along with an adjustable output

version. The SP6223 is offered in an

adjustable output only. These LDOs

have a minimum input voltage of only

1.6V and a maximum input voltage of

4.5V. The output voltage can be

programmed to as low as 0.9V and

have a maximum dropout voltage

rating of 100mV for the SP6222 and

300mV for the SP6223. Both devices

are equipped with an enable (EN)

input for very low current (10nA typical)

shutdown mode.

Enable / Shutdown Operation

The SP6222/6223 is turned on by

providing 1.6V or greater to the EN

pin. To place the device into shutdown

pull the EN pin below 0.4V. If this

feature is not required connect EN to

input supply to always enable the

device whenever power is applied.

Input / Output Capacitor

The SP6222/6223 is designed to

operate using very small ceramic

capacitors. The minimum input and

output capacitor value for stable

operation is 1.0μF. The output

capacitor value may be increased

without limit to improve transient

response. Place these capacitors

as close as possible to the device.

Bypass (BYP) Capacitor

The fixed output versions offer a

BYP pin to decouple the bandgap

reference. Connecting an external

10nF capacitor from BYP to GND

can reduce output noise. If output

noise is not a concern the BYP pin

may be left open. When a bypass

capacitor is used the turn on time is

slower. See the following turn on

time plots for various BYP capacitor

values. The adjustable output

version does not offer this BYP input.

Adjustable Regulator

The output of the device can be

programmed to a specific voltage by

using two external resistors

connected to the ADJ pin (see

Typical Application Circuit for

Adjustable output). The resistors set

APPLICATION INFORMATION

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SP6223EK-L Datasheet(PDF) 4 Page - Sipex Corporation

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