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  ON Semiconductor Electronic Components Datasheet  

CAT4004B Datasheet

Constant Current Programmable LED Driver

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CAT4004B pdf
CAT4003B, CAT4004B
Constant Current
Programmable LED Driver
with 32 Dimming Levels
Description
The CAT4003B and CAT4004B provide respectively three and four
matched low dropout current sources to drive LEDs. The CAT400XB
requires no external RSET resistor. The LED current is internally set
to 25 mA when the device is first enabled. Each LED channel includes
an individual control loop allowing the device to handle a wide range
of LED forward voltages while still maintaining tight current
matching.
The EN/DIM logic input supports the device enable and a digital
dimming interface for setting the LED channel current with 32 linear
dimming levels.
LEDs can be powered directly from a Lithiumion battery due to the
low dropout (75 mV at 20 mA) current sinks.
Package options are available in the 4channel tiny 8pad UDFN
2 mm x 2 mm with a max height of 0.55 mm, and 3channel in the
6lead TSOT23, TSOP and SC70.
Features
3, 4 LED Current Sinks with Tight Matching
32 Dimming Levels
Low Dropout Driver 75 mV at 20 mA
No Switching Noise
Shutdown Current less than 1 mA
25 mA Max LED Current per Channel
Dimming via 1wire EZDim Interface
Thermal Shutdown Protection
RoHS Compliant
6lead TSOT23, TSOP, SC70, and 8pad UDFN 2 mm x 2 mm
Packages
Typical Applications
LCD Display Backlight
Cellular Phones
Digital Still Cameras
This document contains information on some products that are still under development.
ON Semiconductor reserves the right to change or discontinue these products without
notice.
http://onsemi.com
UDFN8
HU2 SUFFIX
CASE 517AW
TSOT236
TD SUFFIX
CASE 419AF
SC706
SD SUFFIX
CASE 419AD
TSOP6
TS SUFFIX
CASE 318G
TYPICAL APPLICATION CIRCUIT
VIN
2.4 V CIN
to
5.5 V 1 mF
LED1 LED2 LED3
VIN
One Wire
Programming
32 Steps
CAT4003B
EN/DIM
GND
ORDERING INFORMATION
See detailed ordering information on page 2 of this data
sheet.
© Semiconductor Components Industries, LLC, 2011
January, 2012 Rev. 2
1
Publication Order Number:
CAT4003B/D


  ON Semiconductor Electronic Components Datasheet  

CAT4004B Datasheet

Constant Current Programmable LED Driver

No Preview Available !

CAT4004B pdf
CAT4003B, CAT4004B
MARKING DIAGRAMS
BHA
YM
UDFN8 (2 x 2 mm)
BH = CAT4004B Device Code
A = Assembly Location Code
Y = Production Year (last digit)
M = Production Month: 1 9, O, N, D
KLYM
TSOT236L
KL = CAT4003B Device Code
Y = Production Year (last digit)
M = Production Month: 1 9, O, N, D
KLA L4AYW
SC706L
KL = CAT4003B Device Code
A = Assembly Location Code
TSOP6
L4 = CAT4003B Device Code
A = Assembly Location Code
YW = Year and Work Week
ORDERING INFORMATION (Note 1)
Orderable Part Number
Package
Finish
Shipping (Note 2)
CAT4003BTDGT3
TSOT23, 6Lead
NiPdAu (RoHS Compliant)
3,000 / Tape & Reel
CAT4003BTST3
TSOP, 6Lead
MatteTin (RoHS Compliant)
3,000 / Tape & Reel
CAT4003BSDGT3
SC70, 6Lead
NiPdAu (RoHS Compliant)
3,000 / Tape & Reel
CAT4004BHU2GT3
UDFN, 8Pad, 2 x 2 mm
NiPdAu (RoHS Compliant)
3,000 / Tape & Reel
1. For additional package and temperature options, please contact your nearest ON Semiconductor Sales office.
2. 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.
3. For detailed information and a breakdown of device nomenclature and numbering systems, please see the ON Semiconductor Device
Nomenclature document, TND310/D, available at www.onsemi.com
http://onsemi.com
2


Part Number CAT4004B
Description Constant Current Programmable LED Driver
Maker ON Semiconductor
Total Page 12 Pages
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