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CAT3636_07 Datasheet, PDF (2/16 Pages) Catalyst Semiconductor – 6-Channel Quad-ModeTM Fractional LED Driver in TQFN3x3
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CAT3636
ABSOLUTE MAXIMUM RATINGS
Parameter
VIN, LEDx, C1±, C2± voltage
VOUT Voltage
EN/SET Voltage
Storage Temperature Range
Junction Temperature Range (1)
Lead Temperature
Rating
Unit
6
V
7
V
VIN + 0.7V
V
-65 to +160
°C
-40 to +125
°C
300
°C
RECOMMENDED OPERATING CONDITIONS
Parameter
Range
Unit
VIN
Ambient Temperature Range (1)
2.5 to 5.5
V
-40 to +85
°C
ILED per LED pin
0 to 32
mA
Total Output Current
0 to 192
mA
Note:
(1) Package thermal resistance is below 50°C/W when mounted on FR4 board.
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
Conditions
Min Typ Max
1x mode, VIN = 4.2V
1.5
IQ
Quiescent Current
1.33 x mode, VIN = 3.3V
2.8
1.5x mode, VIN = 2.8V
3.7
2x mode, VIN = 2.5V
3.8
IQSHDN
ILED-ACC
Shutdown Current
LED Current Accuracy
VEN = 0V
1mA ≤ ILED ≤ 31mA
1
±3
ILED-DEV LED Channel Matching
ILED − ILEDAVG
ILED
±1
ROUT Output Resistance (open loop)
FOSC Charge Pump Frequency
1x mode, IOUT = 100mA
0.5
1.33x mode, IOUT = 100mA
4.5
1.5x mode, IOUT = 100mA
3.5
2x mode, IOUT = 100mA
6
1.33x and 2x mode
0.6 0.8 1.1
1.5x mode
0.8 1.1 1.4
ISC_MAX Output short circuit Current Limit
VOUT < 0.5V
80
1x to 1.33x or 1.33x to 1.5x or
LEDTH 1.5x to 2x Transition Thresholds at any
150
LEDxx pin
VHYS 1.33x to 1x Transition Hysteresis
VIN - Highest LED VF
400
TDF
Transition Filter Delay
500
IIN_MAX Input Current Limit
VOUT > 1V
450
EN/DIM Pin
REN/DIM
VHI
VLO
• Internal Pull-down Resistor
• Logic High Level
• Logic Low Level
100
1.3
0.4
TSD
Thermal Shutdown
150
THYS Thermal Hysteresis
20
VUVLO Undervoltage lockout (UVLO) threshold
2
Units
mA
mA
mA
mA
µA
%
%
Ω
Ω
Ω
Ω
MHz
MHz
mA
mV
mV
µs
mA
kΩ
V
V
°C
°C
V
Doc. No. 5020 Rev. C
2
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
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