ISL9008IEKZ-T datasheet(7/10 Pages) INTERSIL

Part #	ISL9008IEKZ-T

Description	Low Noise LDO with Low IQ and High PSRR

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Manufacturer	INTERSIL [Intersil Corporation]

Direct Link	http://www.intersil.com/cda/home

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7 / 10 page

7

FN9235.1

March 11, 2008

Pin Description

Typical Application

FIGURE 17. SPECTRAL NOISE DENSITY vs FREQUENCY

Typical Performance Curves (Continued)

2.0

1.0

0.1

0.01

0.001

10

100

1k

10k

100k

1M

FREQUENCY (Hz)

VIN = 3.9V

VO = 1.8V

CBYP = 0.1µF

CIN = 1µF

CLOAD = 1µF

100µA

10mA

NUMBER

NAME

DESCRIPTION

1

VIN

Supply Voltage/LDO Input:

Connect a 1µF capacitor to GND.

2

GND

GND is the connection to system ground. Connect to PCB Ground plane.

3

EN

Output Enable. When this signal goes high, the LDO is turned on.

4

NC

No Connect

5

VO

LDO Output:

Connect a 1µF capacitor of value to GND

C1, C2: 1µF X5R CERAMIC CAPACITOR

ISL9008

VIN

GND

VO

NC

5

4

1

2

VIN (2.3 TO 5V)

VOUT

C1

C2

EN

3

ENABLE

OFF

ON

C3: 0.1µF X5R CERAMIC CAPACITOR

ISL9008

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