CAT3636 Datasheet, PDF (1/14 Pages) Catalyst Semiconductor – 6-Channel Quad-ModeTM Fractional LED Driver in TQFN3x3

CAT3636
6-Channel Quad-Mode^[
Fractional LED Driver in
TQFN 3x3
Description
The CAT3636 is a high efficiency Quad−Mode fractional charge
pump that can drive up to six LEDs programmable by a one wire
digital interface. The inclusion of a 1.33x fractional charge pump
mode increases device efficiency by up to 10% over traditional 1.5x
charge pumps with no added external capacitors.
Low noise input ripple is achieved by operating at a constant
switching frequency which allows the use of small external ceramic
capacitors. The multi−fractional charge pump supports a wide range of
input voltages from 2.5 V to 5.5 V.
The EN/SET logic input functions as a chip enable and a “1−wire”
addressable interface for control and current setting of all LEDs. Three
groups of two LEDs can be configured with independent LED currents
between 0.25 mA and 32 mA.
The device is available in a tiny 16−lead TQFN 3 mm x 3 mm
package with a max height of 0.8 mm.
ON Semiconductor’s Quad−Mode^® 1.33x charge pump switching
architecture is patented.
Features
• High Efficiency 1.33x Charge Pump
• Quad−Mode Charge Pump: 1x, 1.33x, 1.5x, 2x
• Drives up to 6 LEDs at 32 mA Each
• 1−Wire EZDimt LED Current Programming
• Power Efficiency up to 92%
• Low Noise Input Ripple in All Modes
• “Zero” Current Shutdown Mode
• Soft Start and Current Limiting
• Short Circuit Protection
• Thermal Shutdown Protection
• Tiny 3 mm x 3 mm, 16−lead TQFN Package
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Applications
• LCD Display Backlight
• Color RGB LEDs
• Cellular Phones
• Digital Still Cameras
• Handheld Devices
http://onsemi.com
TQFN−16
HV3 SUFFIX
CASE 510AD
PIN CONNECTIONS
1
LEDC2
C2−
LEDC1
C2+
LEDB2
C1−
LEDB1
C1+
(Top View)
MARKING DIAGRAMS
JAAA
AXXX
YWW
JAAR
AXXX
YWW
JAAA = CAT3636HV3−T2
JAAR = CAT3636HV3−GT2
A = Assembly Location
XXX = Last Three Digits of Assembly Lot Number
Y = Production Year (Last Digit)
WW = Production Week (Two Digits)
ORDERING INFORMATION
Device
CAT3636HV3−T2
(Note 1)
Package
TQFN−16
(Pb−Free)
CAT3636HV3−GT2 TQFN−16
(Note 2)
(Pb−Free)
Shipping
2,000/
Tape & Reel
1. Matte−Tin Plated Finish (RoHS−compliant).
2. NiPdAu Plated Finish (RoHS−compliant).
© Semiconductor Components Industries, LLC, 2010
1
May, 2010 − Rev. 7
Publication Order Number:
CAT3636/D