CAT3644HV3-GT2 ON Semiconductor, CAT3644HV3-GT2 Datasheet

IC LED DVR 4CH QUAD MODE 16TQFN

CAT3644HV3-GT2

Manufacturer Part Number
CAT3644HV3-GT2
Description
IC LED DVR 4CH QUAD MODE 16TQFN
Manufacturer
ON Semiconductor
Series
QUAD-Mode®r
Type
Backlight, White LEDr
Datasheet

Specifications of CAT3644HV3-GT2

Topology
Linear (LDO), Switched Capacitor (Charge Pump)
Number Of Outputs
4
Internal Driver
Yes
Type - Primary
Backlight
Type - Secondary
White LED
Frequency
800kHz ~ 1.6MHz
Voltage - Supply
2.5 V ~ 5.5 V
Voltage - Output
7V
Mounting Type
Surface Mount
Package / Case
16-TFQFN Exposed Pad
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
25mA
Internal Switch(s)
Yes
Efficiency
92%
Number Of Digits
4
Low Level Output Current
25 mA
High Level Output Current
100 mA
Operating Supply Voltage
2.5 V to 5.5 V
Maximum Supply Current
30 mA
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
CAT3644
4-Channel Ultra High
Efficiency Quad-Mode
Driver
Description
pump that can drive up to four 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 2.5 V to 5.5 V.
dimming interface for current setting of all LEDs. Six different current
ratios are available via the interface.
package with a max height of 0.8 mm.
architecture is patented.
Features
Applications
© Semiconductor Components Industries, LLC, 2010
April, 2010 − Rev. 6
The CAT3644 is a high efficiency Quad−Mode
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 4 LEDs at 25 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
3 mm x 3 mm, 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
®
fractional charge
)
LED
1
1. Matte−Tin Plated Finish (RoHS−compliant).
2. NiPdAu Plated Finish (RoHS−compliant).
CAT3644HV3−T2
(Note 1)
CAT3644HV3−GT2
(Note 2)
JAAD = CAT3644HV3−T2
JAAH = CAT3644HV3−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
LED4
Device
ORDERING INFORMATION
JAAG
AXXX
YWW
MARKING DIAGRAMS
PIN CONNECTIONS
1
http://onsemi.com
CASE 510AD
HV3 SUFFIX
(Top View)
TQFN−16
(Pb−Free)
(Pb−Free)
TQFN−16
TQFN−16
Package
Publication Order Number:
AXXX
JAAH
YWW
Tape & Reel
C2−
C2+
C1−
C1+
Shipping
CAT3644/D
2,000/

Related parts for CAT3644HV3-GT2

CAT3644HV3-GT2 Summary of contents

Page 1

... C1+ (Top View) MARKING DIAGRAMS JAAG JAAH AXXX AXXX YWW YWW JAAD = CAT3644HV3−T2 JAAH = CAT3644HV3−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 (Pb−Free) 2,000/ Tape & ...

Page 2

V IN CIN 2 5.5 V 1−Wire EZDimt Programming 4.02 kΩ Table 1. ABSOLUTE MAXIMUM RATINGS V , LEDx, C1±, C2±, EN/DIM voltage IN V voltage OUT Storage Temperature Range Junction Temperature Range Stresses exceeding Maximum ...

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 Accuracy LED−ACC I LED Channel Matching LED−DEV V RSET Regulated Voltage RSET R Output ...

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 setup from shutdown SETUP T EN/DIM program low time LO T EN/DIM program high ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS ( LEDs OUT 100 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 Pin # Name 1 LED2 LED2 cathode terminal. 2 LED3 LED3 cathode terminal. 3 LED4 LED4 cathode terminal. 4 RSET Connect resistor RSET to set the LED current. 5 EN/DIM Device enable (active high) and Dimming ...

Page 10

Block Diagram V IN EN/DIM 100 kΩ Serial Interface Registers Figure 25. CAT3644 Functional Block Diagram Basic Operation At power−up, the CAT3644 starts operating in 1x mode where the output will be approximately equal to the input supply voltage (less ...

Page 11

LED Current Selection At power−up, the initial LED current is set to full scale (100% brightness) by the external resistor R LED current + 132 The EN/DIM pin has two primary functions. One function enables and disables the device. The ...

Page 12

Unused LED Channels For applications not requiring all the channels recommended the unused LED pins be tied directly to V (see Figure 27 C1+ C1− C2+ C2− OUT C ...

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). 4. The standard lead finish is NiPdAu. 5. The device used in the above example is a CAT3644HV3−GT2 (TQFN, NiPdAu, Tape & Reel, 2,000/Reel). 6. For additional package and temperature options, please contact your nearest ON Semiconductor Sales office. ...

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