1

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FN6484.0

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ISL29009

Non-Linear Output Current, Low Power

Ambient Light Photo Detect IC

The ISL29009 is a light-to-current silicon optical sensor

combining a photodiode and current amplifiers on a single

monolithic IC. Similar to human eyes, the photodiode has

peak sensitivity at 550nm and spans from 400nm to 700nm,

rejecting UV light and IR light. The input luminance range is

from 0.3 lux to 10,000 lux.

The integrated non-linear current amplifier boosts and converts

the photodiode signal in a square root fashion, extending the

light input dynamic range while maintaining excellent sensitivity

at dim conditions with low lux levels. The device consumes

minimal power over a wide range of ambient lux levels because

the current consumption ramps at a square root fashion. A dark

current compensation circuit aids the photodiode to minimize

temperature dependent leakage currents in the absence of

light, improving the light sensitivity at low lux levels.

In addition, the ISL29009 has an EN pin that can be used for

a polling scheme extending portables’ battery life.

The ISL29009 is housed in an ultra compact 2mmx2.1mm

ODFN plastic case surface mount package. Operation is

rated from -40°C to +85°C.

Simplified Block Diagram

Features

• Non-linear current output

• 0.3 lux to 10,000 lux range

• Dark current compensation

• Temperature compensated

• Human eye response

• 1.8V to 3.3V supply range

• Low supply current

• Fast response time

• 6 Ld ODFN: 2mmx2.1mmx0.7mm

• Pb-free (RoHS compliant)

Applications

• Display and keypad dimming for:

- Mobile devices: smart phone, PDA, GPS

- Computing devices: notebook PC, webpod

- Consumer devices: LCD-TV, digital picture frame, digital

camera

• Industrial and medical light sensing

Pinout

ISL29009

(6 LD ODFN)

TOP VIEW

Ordering Information

PART

NUMBER

(Note)

TEMP.

RANGE (°C)

PACKAGE

(Pb-free)

PKG. DWG. #

ISL29009IROZ-T7*

-40 to +85

6 Ld ODFN

L6.2x2.1

*Please refer to TB347 for details on reel specifications.

NOTE: These Intersil Pb-free plastic packaged products employ

special Pb-free material sets; molding compounds/die attach

materials and NiPdAu plate - e4 termination finish, which is RoHS

compliant and compatible with both SnPb and Pb-free soldering

operations. Intersil Pb-free products are MSL classified at Pb-free

peak reflow temperatures that meet or exceed the Pb-free

requirements of IPC/JEDEC J STD-020.

VDD

IOUT

1

2

LIGHT DATA

PROCESS

CURRENT

AMPLIFIER

OUTPUT CURRENT

α √LIGHT INTENSITY

PHOTODIODE

ARRAY

4

GND

EN

6

Pin Descriptions

PIN NUMBER

PIN NAME

DESCRIPTION

1

VDD

Supply, 1.8V to 3.3V

2

GND

Ground

3

NC

No connect

4EN

Active LO enable

5

NC

No connect

6

IOUT

Current output

1

2

3

6

5

4

VDD

GND

NC

IOUT

NC

EN

*THERMAL PAD CAN BE CONNECTED TO GND OR

THERMAL

PAD*

ELECTRICALLY ISOLATED

Data Sheet

July 1, 2008