CAT3647HV3-GT2 ON Semiconductor, CAT3647HV3-GT2 Datasheet

IC LED DRVR WHITE BCKLGT 16-TQFN

CAT3647HV3-GT2

Manufacturer Part Number
CAT3647HV3-GT2
Description
IC LED DRVR WHITE BCKLGT 16-TQFN
Manufacturer
ON Semiconductor
Series
QUAD-Mode®r
Type
Backlight, White LEDr
Datasheet

Specifications of CAT3647HV3-GT2

Topology
Switched Capacitor (Charge Pump)
Number Of Outputs
3
Internal Driver
Yes
Type - Primary
Backlight
Type - Secondary
White LED
Frequency
800kHz ~ 1.6MHz
Voltage - Supply
2.5 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
16-TFQFN Exposed Pad
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
30mA
Internal Switch(s)
Yes
Efficiency
92%
Number Of Segments
3
Operating Supply Voltage
2.5 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Lead Free Status / Rohs Status
 Details
Other names
CAT3647HV3-GT2TR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CAT3647HV3-GT2
Manufacturer:
CATALYST
Quantity:
20 000
CAT3647
3-Channel Ultra High
Efficiency Quad-Mode
Driver with 32 Dimming
Levels
Description
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.
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.
dimming interface for setting the current in all the LED channels. The
1−wire pulse−dimming interface supports 32 linear steps from
full−scale down to zero current.
package with a max height of 0.8 mm.
architecture is patented.
Features
Applications
© Semiconductor Components Industries, LLC, 2010
May, 2010 − Rev. 2
The CAT3647 is a high efficiency quad−mode fractional charge
Low noise input ripple is achieved by operating at a constant
The EN/DIM logic input functions as a chip enable and a digital
The device is available in the tiny 16−pad TQFN 3 mm x 3 mm
ON Semiconductor’s Quad−Mode
Compliant
High Efficiency 1.33x Charge Pump
Quad−mode Charge Pump: 1x, 1.33x, 1.5x, 2x
Drives up to 3 LEDs at 30 mA Each
1−wire EZDimt 32 Linear Steps
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
16−pad TQFN Package
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
LCD Display Backlight
Cellular Phones
Digital Still Cameras
Handheld Devices
®
1.33x, charge pump switching
)
LED
1
1. NiPdAu Plated Finish (RoHS−compliant).
CAT3647HV3−GT2
(Note 1)
JAAP = CAT3647HV3−GT2
A = Assembly Location
XXX = Last Three Digits of Assembly Lot Number
Y = Production Year (Last Digit)
WW = Production Week (Two Digits)
RSET
LED2
LED3
Device
NC
ORDERING INFORMATION
MARKING DIAGRAM
PIN CONNECTIONS
1
http://onsemi.com
CASE 510AD
HV3 SUFFIX
(Top View)
TQFN−16
AXXX
JAAP
YWW
(Pb−Free)
TQFN−16
Package
Publication Order Number:
Tape & Reel
C2−
C2+
C1−
C1+
Shipping
CAT3647/D
2,000/

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CAT3647HV3-GT2 Summary of contents

Page 1

... LED3 C2+ NC C1− RSET C1+ (Top View) MARKING DIAGRAM JAAP AXXX YWW JAAP = CAT3647HV3−GT2 A = Assembly Location XXX = Last Three Digits of Assembly Lot Number Y = Production Year (Last Digit Production Week (Two Digits) ORDERING INFORMATION Device Package Shipping TQFN−16 2,000/ CAT3647HV3−GT2 (Note 1) (Pb− ...

Page 2

5.5 V 1−Wire EZDimt Programming 3.74 kΩ Table 1. ABSOLUTE MAXIMUM RATINGS VIN, LEDx, C1±, C2±, EN/DIM, RSET voltage VOUT voltage Storage Temperature Range Junction Temperature Range Stresses exceeding Maximum Ratings may damage the device. ...

Page 3

Table 3. ELECTRICAL OPERATING CHARACTERISTICS (over recommended operating conditions unless specified otherwise) V Symbol Name I Quiescent Current Q I Shutdown Current QSHDN I LED Current Setting LED-ACC I LED Current Accuracy LED-ACC I LED Channel Matching LED-DEV V RSET ...

Page 4

Table 4. RECOMMENDED EN/DIM TIMING (For 2.4 V ≤ V ≤ 5.5 V, over full ambient temperature range -40°C to +85°C.) IN Symbol Name T EN/DIM program low time LO T EN/DIM program high time HI T EN/DIM low time ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS ( LEDs OUT 100 V = 3.3 V 1.33x 4.5 4.0 3.5 3.0 INPUT VOLTAGE ...

Page 6

TYPICAL PERFORMANCE CHARACTERISTICS ( LEDs OUT 1.3 1.2 1.5x Mode 1.1 1.0 0.9 1.33x, 2x Mode 0.8 0.7 − TEMPERATURE (°C) Figure 9. Switching Frequency ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS ( LEDs OUT Figure 15. Power Up Delay (1x Mode) Figure 17. Operating Waveforms in 1x Mode Figure 19. Switching Waveforms in 1.5x Mode ...

Page 8

TYPICAL PERFORMANCE CHARACTERISTICS ( LEDs OUT 4.0 1x Mode 3.5 3.0 2.5 2.0 1.5 1.0 0 100 200 OUTPUT CURRENT (mA) Figure 21. Foldback Current ...

Page 9

Table 6. PIN DESCRIPTION Name LED1 LED1 cathode terminal. LED2 LED2 cathode terminal. LED3 LED3 cathode terminal. RSET Connect resistor RSET to set the LED current. EN/DIM Device enable (active high) and Dimming Control. VOUT Charge pump output connected to ...

Page 10

Block Diagram VIN EN/DIM 100 kΩ Serial Interface Registers Figure 24. CAT3647 Functional Block Diagram Basic Operation At power-up, the CAT3647 starts operating in 1x mode where the output will be approximately equal to the input supply voltage (less any ...

Page 11

LED Current Selection After power-up, the LED current is set by the external resistor (R ) value and the number of pulses (n) on the SET EN/DIM input as follows: 0.6 V LED current + 125 R SET The full ...

Page 12

Unused LED Channels For applications not requiring all the channels recommended the unused LED pins be tied directly to VOUT (see Figure 26 C1+ C1− C2+ C2− VIN VOUT C 2.4 V ...

Page 13

D PIN#1 INDEX AREA TOP VIEW SYMBOL MIN NOM A 0.70 0.75 A1 0.00 0.02 A3 0.20 REF b 0.18 0.25 D 2.90 3.00 D2 1.40 −−− E 2.90 3.00 E2 1.40 −−− e 0.50 BSC L 0.30 0.40 Notes: ...

Page 14

... All packages are RoHS−compliant (Lead−free, Halogen−free). 3. The standard lead finish is NiPdAu. 4. The device used in the above example is a CAT3647HV3−GT2 (TQFN, NiPdAu, Tape & Reel, 2,000/Reel). 5. For additional package and temperature options, please contact your nearest ON Semiconductor Sales office. ...

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