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LED Driver. CAT3606 Datasheet

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LED Driver. CAT3606 Datasheet
















CAT3606 Driver. Datasheet pdf. Equivalent













Part

CAT3606

Description

6-Channel Low Noise Charge Pump White LED Driver



Feature


CAT3606 6-Channel Low Noise Charge Pump White LED Driver Description The CAT36 06 controls up to four LEDs for the mai n display and two LEDs for the sub-disp lay in cellular phones. The device is c apable of operating in either 1x (LDO) mode or 1.5x charge pump mode. All LED pin currents are regulated and tightly matched to achieve uniformity of bright ness across the LC.
Manufacture

ON Semiconductor

Datasheet
Download CAT3606 Datasheet


ON Semiconductor CAT3606

CAT3606; D backlight. An external resistor (RSET) sets the nominal output current. The d evice can deliver as much as 20 mA per channel during low voltage operation (3 V), and 30 mA per channel during nomin al operation (3.3 V). A constant high-f requency switching scheme (1 MHz) provi des low noise and allows the use of ver y small value ceramic capacitors. A “ zero” quiescent curr.


ON Semiconductor CAT3606

ent mode can be achieved via the chip en able pin EN. The Main and Sub LEDs each have their own dedicated ON/OFF contro l pins ENM, ENS. Dimming can be achieve d using either a DC voltage to control the RSET pin current, or by applying a PWM signal on the ENM and ENS pins. The device is available in a 16−pad TQFN package with a max height of 0.8 mm. F eatures • Drives up .


ON Semiconductor CAT3606

to 4 Main LEDs and 2 Sub LEDs • Separa te Control for Main and Sub LEDs • Co mpatible with Supply Voltage of 3 V to 5.5 V • Power Efficiency up to 90% Output Current up to 30 mA per LED High−frequency Operation at 1 MHz 2 Modes of Operation 1x and 1.5x • White LED Detect Circuitry on All Chan nels • Shutdown Current less than 1 m A • Small Ceramic Capacitors • Soft .





Part

CAT3606

Description

6-Channel Low Noise Charge Pump White LED Driver



Feature


CAT3606 6-Channel Low Noise Charge Pump White LED Driver Description The CAT36 06 controls up to four LEDs for the mai n display and two LEDs for the sub-disp lay in cellular phones. The device is c apable of operating in either 1x (LDO) mode or 1.5x charge pump mode. All LED pin currents are regulated and tightly matched to achieve uniformity of bright ness across the LC.
Manufacture

ON Semiconductor

Datasheet
Download CAT3606 Datasheet




 CAT3606
CAT3606
6-Channel Low Noise
Charge Pump White LED
Driver
Description
The CAT3606 controls up to four LEDs for the main display and
two LEDs for the sub-display in cellular phones. The device is capable
of operating in either 1x (LDO) mode or 1.5x charge pump mode. All
LED pin currents are regulated and tightly matched to achieve
uniformity of brightness across the LCD backlight. An external
resistor (RSET) sets the nominal output current.
The device can deliver as much as 20 mA per channel during low
voltage operation (3 V), and 30 mA per channel during nominal
operation (3.3 V). A constant high-frequency switching scheme
(1 MHz) provides low noise and allows the use of very small value
ceramic capacitors.
A “zero” quiescent current mode can be achieved via the chip enable
pin EN. The Main and Sub LEDs each have their own dedicated
ON/OFF control pins ENM, ENS. Dimming can be achieved using
either a DC voltage to control the RSET pin current, or by applying a
PWM signal on the ENM and ENS pins.
The device is available in a 16pad TQFN package with a max
height of 0.8 mm.
Features
Drives up to 4 Main LEDs and 2 Sub LEDs
Separate Control for Main and Sub LEDs
Compatible with Supply Voltage of 3 V to 5.5 V
Power Efficiency up to 90%
Output Current up to 30 mA per LED
Highfrequency Operation at 1 MHz
2 Modes of Operation 1x and 1.5x
White LED Detect Circuitry on All Channels
Shutdown Current less than 1 mA
Small Ceramic Capacitors
Soft Start and Current Limiting
Short Circuit Protection
16pad TQFN Package, 0.8 mm Max Height
These Devices are PbFree, Halogen Free/BFR Free and are RoHS
Compliant
Applications
Cell Phone Main and Subdisplay Backlight
Navigation
PDAs
Digital Cameras
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TQFN16
HV4 SUFFIX
CASE 510AE
PIN CONNECTIONS (Note 1)
1
LED6
EN
ENM
ENS
GND
LED1
C2+
C2
C1
(4 x 4 mm) (Top View)
MARKING DIAGRAMS
G366
CDBB
G366 = CAT3606HV4T2
CDBB = CAT3606HV4GT2
ORDERING INFORMATION
Device
CAT3606HV4T2
Package
TQFN16
(Note 2)
CAT3606HV4GT2 TQFN16
(Note 3)
Shipping
2,000/
Tape & Reel
1. The “exposed pad” under the package must be
connected to the ground plane on the PCB.
2. MatteTin Plated Finish (RoHScompliant).
3. NiPdAu Plated Finish (RoHScompliant).
© Semiconductor Components Industries, LLC, 2010
1
January, 2010 Rev. 3
Publication Order Number:
CAT3606/D




 CAT3606
CAT3606
1 mF
1 mF
LiIon
Battery +
CIN
1 mF
ON/OFF
ENABLE
LED14
ENABLE
LED56
RSET
24 kW
C1+ C1C2+ C2
VIN
VOUT
CAT3606
EN
LED1
ENM
LED2
LED3
ENS
LED4
LED5
RSET
GND LED6
Main Display
Sub Display
COUT
1 mF
20 mA
Figure 1. Typical Application Circuit
Table 1. PIN DESCRIPTION
Pin #
Name
Function
1
LED6
LED6 cathode terminal
2
EN
Enable/shutdown input, active high
3
ENM
Enable “main” input for LED1 to LED4, active low
4
ENS
Enable “sub” input for LED5 and LED6, active low
5
RSET
The LED output current is set by the current sourced out of the RSET pin
6
VOUT
Charge pump output connected to the LED anodes
7
VIN
Supply voltage
8
C1+
Bucket capacitor 1 terminal
9
C1
Bucket capacitor 1 terminal
10
C2
Bucket capacitor 2 terminal
11
C2+
Bucket capacitor 2 terminal
12
LED1
LED 1 cathode terminal
13
LED2
LED 2 cathode terminal
14
LED3
LED 3 cathode terminal
15
LED4
LED 4 cathode terminal
16
LED5
LED 5 cathode terminal
PAD
GND
Ground reference
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2




 CAT3606
CAT3606
Table 2. ABSOLUTE MAXIMUM RATINGS
Parameter
Rating
Unit
VIN, VOUT, LEDx voltage
0.3 to 7.0
V
EN, ENM, ENS voltage
0.3 to VIN
V
RSET voltage
0.3 to VIN
V
RSET current
±1
mA
Ambient Temperature Range
40 to +85
_C
Storage Temperature Range
65 to +160
_C
Lead Temperature
300
_C
ESD Rating HBM (Human Body Model)
2,000
V
ESD Rating MM (Machine Model) (Note 4)
200
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
4. Machine model is with 200 pF capacitor discharged directly into each pin.
Table 3. RECOMMENDED OPERATING CONDITIONS
Parameter
Range
Unit
VIN
3.0 to 5.5
V
Ambient Temperature Range
40 to +85
_C
Input/Output/Bucket Capacitors
1 ±20% Typical
mF
ILED per LED pin
IOUT Total Output Current
0 to 30
mA
0 to 150
mA
Table 4. ELECTRICAL OPERATING CHARACTERISTICS
(Limits over recommended operating conditions unless specified otherwise. Typical values at TA = 25°C, VIN = 3.5 V, IRSET = 5 mA.)
Symbol
Parameter
Conditions
Min Typ Max Unit
IQ
Quiescent Current
VEN = 0 V
1x Mode, No Load
1.5x Mode, No Load
0.1
1
mA
0.3
1
mA
2.6
5
mA
VRSET
ILED
RSET Regulated Voltage
Programmed LED Current
ILED
LED Current Range with 6 LEDs
IRSET = 5 mA
IRSET = 37 mA
IRSET = 78 mA
3.3 VIN 4.5 V
3.0 VIN 4.5 V
1.17 1.2 1.23
V
2.4
mA
15.0
30.0
30
mA
20
ILED
ILEDACC
LED Current Range with 4 LEDs
LED Current Accuracy
ILEDDEV
ROUT
fOSC
TDROPOUT
IENCTR
VENCTR
LED Channel Matching
Output Resistance
(Open Loop)
Charge Pump Frequency
1x to 1.5x Mode Transition Dropout Delay
Input Leakage Current
High Detect Threshold
Low Detect Threshold
3.3 VIN 4.5 V
0.5 mA ILED 3 mA
3 mA ILED 30 mA
(ILED – ILEDAVG) / ILEDAVG
1x Mode,
1.5x Mode, IOUT = 100 mA
On Inputs EN, ENM, ENS
On Inputs EN, ENM, ENS
30
mA
±15
%
±5
±3
%
1.4
2.5
W
6.5
10
0.8
1.0
1.3 MHz
0.4
0.6
0.9
ms
1
mA
0.8
1.3
V
0.4
0.7
ISC
Input Current Limit
ILIM
Maximum Input Current
VOUT = GND
VOUT > 1 V
30
45
60
mA
200
400 600
mA
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