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  ON Semiconductor Electronic Components Datasheet  

CAT4106 Datasheet

6W Quad Channel DC/DC LED Driver

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CAT4106 pdf
CAT4106
6 W Quad Channel DC/DC
LED Driver with Diagnostics
Description
The CAT4106 is an integrated multi−channel LED driver and high
power DC/DC converter suitable for powering backlighting
applications up to a total of 6 watts. Up to four matched LED strings
can be accurately programmed with uniform drive current set by a
single external resistor. Each output channel is suitable for LED string
voltages of up to 36 V. The driver automatically adjusts the output
voltage to drive the highest forward voltage string with the minimum
headroom voltage maximizing the efficiency.
High resolution dimming control is achieved by the EN/PWM logic
pin which supports multiple frequencies. This ensures precise PWM
dimming control while the device remains fully biased. In addition,
when held at logic low, the device to enter a full shutdown “zero”
current mode.
External programming resistors set the minimum and maximum
voltage limits for the acceptable “window of operation” for LED
strings. Any channel which fails to regulate within the window (Open
or Short LED) is detected and flagged on the FAULT logic output
(active low, open−drain).
The device is available in a 16−lead TQFN 4 mm x 4 mm and
TSSOP with exposed pad packages.
Features
Four LED Channels with Tight Current Matching
Integrated DC/DC Boost Converter
Up to 6 W LED Total Output Power
Up to 92% Efficiency
Low Dropout LED Channels (500 mV at 175 mA)
High Frequency PWM Interface (up to 2 kHz)
Adjustable Short/Open LED Detection
Programmable LED Channel Current
Adjustable LED Channel Voltage
Thermal Shutdown Protection
16−lead TQFN 4 x 4 mm and TSSOP Packages
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Applications
LCD Backlight Lighting
Automotive and General Purpose Lighting
© Semiconductor Components Industries, LLC, 2014
June, 2014 − Rev. 4
1
http://onsemi.com
1
TQFN−16
HV4 SUFFIX
CASE 510AE
1
TSSOP−16
YP SUFFIX
CASE 948AP
LED1
GND
FAULT
PGND
FB
SW
EN/PWM
NC
PIN CONNECTIONS
1
TAB
is
GND
LED2
LED3
LED4
RSET
VFMAX
VFMIN
CTRL
VIN
LED1
GND
FAULT
PGND
1
TAB
is
GND
VFMAX
VFMIN
CTRL
VIN
(Top Views)
MARKING DIAGRAMS
4106Y
CDAL
CDAL = CAT4106HV4−GT2
4106Y = CAT4106YP−T2
ORDERING INFORMATION
Device
CAT4106HV4−GT2
(Note 1)
Package
TQFN−16
(Pb−Free)
Shipping
2,000/
Tape & Reel
CAT4106YP−T2
(Note 1)
TSSOP−16
2,000/
(Pb−Free) Tape & Reel
1. NiPdAu Plated Finish (RoHS−compliant)
2. Matte−Tin Plated Finish (RoHS−compliant)
Publication Order Number:
CAT4106/D


  ON Semiconductor Electronic Components Datasheet  

CAT4106 Datasheet

6W Quad Channel DC/DC LED Driver

No Preview Available !

CAT4106 pdf
CAT4106
VL
3 V to 24 V C2
4.7 mF
VIN
3 V to 5.5 V C1
1 mF
LD
47 mH
C3
10 mF/
50 V
VIN SW VFMAX
VFMIN
CAT4106
OFF... ON... DIM
EN/PWM
LED1
RSET
R2 20 kW CTRL
LED2
LED3
LED4
FB GND
FAULT
PGND
R1
R3
20 kW
R4 R6
R5 R7
VIN
R8
LED Fault Detection
(open drain pull−down)
Figure 1. Typical Application Circuit
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameters
Ratings
Units
VIN, RSET, EN/PWM, CTRL, FB, FAULT
−0.3 V to 6
V
VFMIN, VFMAX
−0.3 V to 6
V
LED1, LED2, LED3, LED4
−0.3 V to 25
V
SW (internally clamped to 40 V)
50 V
Storage Temperature Range
−65 to +150
_C
Junction Temperature Range
−40 to +150
_C
Lead Temperature
300 _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
Range
Units
VIN
3.0 to 5.5
V
Inductor Drive Voltage
3.0 to 24
V
LED String Forward Voltage per channel
up to 36
V
Ambient Temperature Range
−40 to +85
_C
ILED per LED pin
10 to 175
mA
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.
3. Typical application circuit with external components is shown above.
Table 3. RECOMMENDED EN/PWM TIMING
(For 3.0 VIN 5.5 V, over full ambient temperature range −40 to +85°C.)
Symbol
Name
Conditions
TLEDSETUP
TLO
THI
TPWRDWN
TLEDSET
LED setup time from shutdown
EN/PWM low time
EN/PWM high time
EN/PWM low time to shutdown delay
LED current settling time
ILED = 100 mA
Min Typ Max
10 40 100
0.2 2000
100
8
0.2
Units
ms
ms
ms
ms
ms
http://onsemi.com
2


Part Number CAT4106
Description 6W Quad Channel DC/DC LED Driver
Maker ON Semiconductor
Total Page 15 Pages
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