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Catalyst Semiconductor
Catalyst Semiconductor

CAT3604V Datasheet Preview

CAT3604V Datasheet

4-Channel Quad-Mode LED Driver

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CAT3604V pdf
CAT3604V
4-Channel Quad-Mode™ LED Driver
with Open/Short LED Detection
www.datasheet4u.com
FEATURES
„ Quad-mode charge pump: 1x, 1.33x, 1.5x, 2x
„ Drives up to 4 LEDs at 30mA each
„ Pin compatible with industry standard ‘604
„ Open/short LED automatic detection
„ Power efficiency up to 92%
„ High resolution PWM dimming
„ Low noise supply ripple in all modes
„ Soft start and current limiting
„ Short circuit and thermal overload protection
„ 16-Pad TQFN package, 4mm x 4mm
APPLICATION
„ LCD Display Backlight
„ Cellular Phones
„ Digital Still Cameras
„ Handheld Devices
ORDERING INFORMATION
Part Number
CAT3604VHV4-GT2
CAT3604VHV4-T2
Package Qty per Reel Marking
TQFN-16(1)
4 x 4mm
2000
CDAK
TQFN-16
4 x 4mm
2000
CDAF
Note:
(1) NiPdAu Plated Finish, RoHS compliant
For other finishes, please contact factory
For Ordering Information details, see page 14.
DESCRIPTION
The CAT3604V is a high efficiency Quad-ModeTM
fractional charge pump that can drive up to four LEDs
with input supply voltages as low as 2.5V.
An external RSET resistor is used to control the LED
channel brightness while channel diagnostics include
automatic detection for both short and open LED
channel conditions, ensuring the CAT3604V maintains
the highest efficiency level in all operating modes.
Each operating mode uses a constant high frequency
switching scheme which allows the use of small form
factor external ceramic capacitors while delivering
excellent low noise input supply ripple up to 5.5 volts.
The EN input control supports direct PWM dimming
and can accommodate dimming frequencies in excess
of 10kHz thereby providing extremely high resolution
brightness levels.
The device is available in the 16-pad low profile
0.8mm thin QFN (4mm x 4mm).
PIN CONFIGURATION
LED1 LED2 LED3 LED4
16 15 14 13
EN 1
12 GND
NC 2
NC 3
GND
11 C2+
10 C2-
NC 4
567
RSET VOUT VIN
8
C1+
9 C1-
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
TYPICAL APPLICATION CIRCUIT
1µF 1µF
VIN
2.4V CIN
to
5.5V
1µF
ON OFF
4.02k
C1+
VIN
C1- C2+ C2-
VOUT
EN
RSET
CAT3604V
GND
LED1
LED2
LED3
LED4
VOUT
COUT
1µF
20mA
1 Doc. No. MD-5029, Rev. B



Catalyst Semiconductor
Catalyst Semiconductor

CAT3604V Datasheet Preview

CAT3604V Datasheet

4-Channel Quad-Mode LED Driver

No Preview Available !

CAT3604V pdf
CAT3604V
ABSOLUTE MAXIMUM RATINGS
Parameter
Rating
VIN, LEDx, C1±, C2± voltage
6
VOUT voltage
7
EN voltage
6
www.daStatoshraeegte4uT.ceommperature Range
-65 to +160
Junction Temperature Range
-40 to +150
Lead Temperature
300
Unit
V
V
V
°C
°C
°C
RECOMMENDED OPERATING CONDITIONS
Parameter
VIN
Ambient Temperature Range
ILED per LED pin
Total Output Current
LED Forward Voltage Range
Rating
2.5 to 5.5
-40 to +85
0 to 25
0 to 100
1.3 to 4.3
Unit
V
°C
mA
mA
V
Typical application circuit with external components is shown on page 1.
ELECTRICAL OPERATING CHARACTERISTICS
(over recommended operating conditions unless specified otherwise) VIN = 3.6V, EN = High, TAMB = 25°C
Symbol Name
IQ Quiescent Current
IQSHDN
ILED-ACC
ILED-DEV
ILED
VRSET
Shutdown Current
LED Current Accuracy
LED Channel Matching
Programmed LED Current
RSET Regulated Voltage
ROUT Output Resistance (open loop)
FOSC
ISC_MAX
IIN_MAX
LEDTH
Charge Pump Frequency
Output short circuit Current Limit
Input Current Limit
1x to 1.33x, 1.33x to 1.5x or 1.5x to 2x
Transition Thresholds at any LED pin
Conditions
1x mode, no load
1.33 x mode, no load
1.5x mode, no load
2x mode, no load
VEN = 0V
ILEDAVG / ILEDAVG-NOMINAL
(ILED - ILEDAVG) / ILEDAVG
RSET = 34.0k
RSET = 5.23k
RSET = 2.67k
1x mode
1.33x mode, VIN = 3V
1.5x mode, VIN = 2.7V
2x mode, VIN = 2.4V
1.33x and 2x mode
1.5x mode
VOUT < 0.5V
VOUT > 1V
Min
0.58
0.8
1
Typ
1.0
1.7
2.2
2.4
±2
±1.5
2.4
15
30
0.6
0.8
5
5
10
1
1.3
50
250
130
Max
1
0.62
1.3
1.6
VHYS
REN
VHI
VLO
TSD
THYS
VUVLO
1x Mode Transition Hysteresis
EN Pin
Internal Pull-down Resistor
Logic High Level
Logic Low Level
Thermal Shutdown
Thermal Hysteresis
Undervoltage lockout (UVLO) threshold
400
100
1.3
0.4
150
20
1.6 1.8 2.0
Units
mA
mA
mA
mA
µA
%
%
mA
V
MHz
MHz
mA
mA
mV
mV
k
V
V
°C
°C
V
Doc. No. MD-5029 Rev. B
2 © Catalyst Semiconductor, Inc.
Characteristics subject to change without notice


Part Number CAT3604V
Description 4-Channel Quad-Mode LED Driver
Maker Catalyst Semiconductor
Total Page 15 Pages
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