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CAT3643HV3-GT2

P1-P3P4-P6P7-P9P10-P12P13-P14
© Semiconductor Components Industries, LLC, 2014
August, 2014 − Rev. 7
1 Publication Order Number:
CAT3643/D
CAT3643
3-Channel Ultra High
Efficiency LED Driver
Description
The CAT3643 is a high efficiency fractional charge pump that can
drive up to three 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 2.4 V to 5.5 V.
The EN/DIM logic input functions as a chip enable and a digital
dimming interface for current setting of all LEDs. Six different current
ratios are available via the interface.
The device is available in the 16−pad TQFN or 12−pad TDFN 3 mm
x 3 mm package with a max height of 0.8 mm.
ON Semiconductor’s 1.33x charge pump switching architecture is
patented.
Features
• High Efficiency 1.33x Charge Pump
• Charge Pump: 1x, 1.33x, 1.5x, 2x
• Drives up to 3 LEDs at 32 mA Each
• 1−wire EZDim 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
• 12−pad TDFN and 16−pad TQFN Packages
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Applications
• LCD Display Backlight
• Cellular Phones
• Digital Still Cameras
• Handheld Devices
http://onsemi.com
TDFN−12
HV2 SUFFIX
CASE 511AN
HABF
MARKING DIAGRAMS
HABG
Device Package Shipping†
ORDERING INFORMATION
CAT3643HV2−T2
(Note 1)
TDFN−12
(Pb−Free)
2000 /
Tape & Reel
CAT3643HV2−GT2
(Note 2)
TDFN−12
(Pb−Free)
2000 /
Tape & Reel
1. Matte−Tin Plated Finish (RoHS−compliant).
2. NiPdAu Plated Finish (RoHS−compliant).
TQFN−16
HV3 SUFFIX
CASE 510AD
CAT3643HV2−T2 CAT3643HV2−GT2
JAAE
JAAF
CAT3643HV3−T2 CAT3643HV3−GT2
CAT3643HV3−T2
(Note 1)
TQFN−16
(Pb−Free)
2000 /
Tape & Reel
CAT3643HV3−GT2
(Note 2)
TQFN−16
(Pb−Free)
2000 /
Tape & Reel
†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.
CAT3643
http://onsemi.com
2
Figure 1. Typical Application Circuit
GND
2.4 V
to
5.5 V
20 mA
4.02 kΩ
LED1
LED2
LED3
RSET
EN/DIM
CAT3643
1 mF
1 mF
C1−C1+ C2−C2+
1 mF
1 mF
1−Wire
Programming
C
OUT
V
OUT
V
OUT
V
IN
V
IN
C
IN
EZDimt
Figure 2. Pin Configurations (Top Views)
TDFN−12
GNDLED1
LED2
LED3
1
RSET
EN/DIM
VOUT
C2+
C2−
C1−
C1+
VIN
1
C2+
C2−
C1−
C1+
TQFN−16
LED2
LED3
RSET
NC
LED1
GND
NC
NC
EN/DIM
VOUT
NC
VIN
The CAT3643 is offered in three different packages. The 12−pad TDFN 3 mm x 3 mm with a max height of 0.8 mm is
pin−compatible to the ON Semiconductor CAT3603 LED driver. The 16−pad TQFN 3 mm x 3 mm with max height of 0.8 mm
is also offered.
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter Rating Unit
V
IN
, LEDx, C1±, C2±, EN/DIM, RSET voltage 6 V
V
OUT
voltage 7 V
Storage Temperature Range −65 to +160 °C
Junction Temperature Range −40 to +150 °C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
Table 2. RECOMMENDED OPERATING CONDITIONS
Parameter Rating Unit
V
IN
2.5 to 5.5 V
Ambient Temperature Range −40 to +85 °C
I
LED
per LED pin up to 30 mA
LED Forward Voltage Range 1.3 to 4.3 V
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
NOTE: Typical application circuit with external components is shown above.
CAT3643
http://onsemi.com
3
Table 3. ELECTRICAL OPERATING CHARACTERISTICS
(over recommended operating conditions unless specified otherwise) V
IN
= 3.6 V, EN = High, T
AMB
= 25°C.
Symbol
Name Conditions Min Typ Max Units
I
Q
Quiescent Current 1x mode, no load
1.33x mode, no load
1.5x mode, no load
2x mode, no load
1.0
1.7
2.2
2.4
mA
I
QSHDN
Shutdown Current V
EN
= 0 V 1
mA
I
LED−ACC
LED Current Accuracy (I
LEDAVG
– I
NOMINAL
) / I
NOMINAL
RSET = 5 kW
±2 %
I
LED−DEV
LED Channel Matching (I
LED
− I
LEDAVG
) / I
LEDAVG
±1.5 %
V
RSET
RSET Regulated Voltage 0.58 0.6 0.62 V
R
OUT
Output Resistance (open loop) 1x mode
1.33x mode, V
IN
= 3 V
1.5x mode, V
IN
= 2.7 V
2x mode, V
IN
= 2.4 V
0.8
5
5
10
W
F
OSC
Charge Pump Frequency 1.33x and 2x mode
1.5x mode
0.8
1
1
1.3
1.3
1.6
MHz
I
SC_MAX
Output short circuit Current Limit V
OUT
< 0.5 V 50 mA
I
IN_MAX
Input Current Limit V
OUT
> 1 V 250 mA
LED
TH
1x to 1.33x or 1.33x to 1.5x or 1.5x to 2x
Transition Thresholds at any LED pin
130 mV
V
HYS
1x Mode Transition Hysteresis 400 mV
T
DF
Transition Filter Delay 500
ms
R
EN/DIM
V
HI
V
LO
EN/DIM Pin
− Internal Pull−down Resistor
− Logic High Level
− Logic Low Level
1.3
100
0.4
kW
V
V
T
SD
Thermal Shutdown 150 °C
T
HYS
Thermal Hysteresis 20 °C
V
UVLO
Undervoltage lockout (UVLO) threshold 1.6 1.8 2.0 V
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
P1-P3P4-P6P7-P9P10-P12P13-P14

CAT3643HV3-GT2

Mfr. #:
Buy CAT3643HV3-GT2
Manufacturer:
ON Semiconductor
Description:
LED Lighting Drivers LED Driver,Quad mode,3 ch
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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