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LM3435 Folha de dados(PDF) 4 Page - Texas Instruments

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Nome de Peças LM3435
Descrição Electrónicos  Compact Sequential Mode RGB LED Driver with I2C Control Interface
Download  27 Pages
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

LM3435 Folha de dados(HTML) 4 Page - Texas Instruments

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LM3435
SNVS724C – JUNE 2011 – REVISED MAY 2013
www.ti.com
ELECTRICAL CHARACTERISTICS
Specification with standard type are for TA = TJ = +25°C only; limits in boldface type apply over the full Operating Junction
Temperature (TJ) range. Minimum and Maximum are specified through test, design or statistical correlation. Typical values
represent the most likely parametric norm at TJ = +25°C, and are provided for reference purposes only. Unless otherwise
stated the following conditions apply: VIN = 5V and VOUT – VIN = 3V.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Supply Characteristics
IIN
IIN operating current
No switching
5
10
mA
IIN-SD
IIN Shutdown current
VEN = 0V
8
30
µA
ISVDD
SVDD standby supply current
VSVDD = 5V, I
2C Bus idle
1
µA
VINUVLO
VIN under-voltage lock-out
VIN decreasing
2.5
V
VINUVLO_hys
VIN under-voltage lock-out hysteresis
VIN increasing
0.2
V
Enable Input
VEN
EN Pin input threshold
VEN rising
0.8 x VIN
V
VEN falling
0.2 x VIN
V
IEN
Enable Pull-up Current
VEN = 0V
5
µA
Logic Inputs (RCTRL, GCTRL and BCTRL)
VCTRL
CTRL pins input threshold
VCTRL rising
1.35
V
(VIN = 2.7V to 5.5V)
VCTRL falling
0.63
(VIN = 2.7V to 5.5V)
Switching Characteristics
RDS-M-ON
Main MOSFET RDS(ON)
VGS(MAIN) =VIN = 5.0V
0.04
0.1
ISW(sink) = 100mA
RDS-S-ON
Syn. MOSFET RDS(ON)
VGS(SYN) = VOUT - 5.0V
0.06
0.2
ISW(source) = 100mA
Current Limit
ICL
Peak current limit through main MOSFET
6
8.5
A
threshold
ON/OFF Timer
tON
ON timer pulse width
RRT = 499 kΩ
750
ns
tON-MIN
ON timer minimum pulse width
80
ns
tOFF
OFF timer minimum pulse width
155
ns
RGB Driver Characteristics (RLED, BLED and GLED)
RDS(RED)
Red LED Switch RDS
VOUT - VIN = 3.3V
0.1
0.2
ILED = 1.5A
I2C code = 3FFh
RDS(BLU)
Blue LED Switch RDS
VOUT - VIN = 3.3V
0.1
0.2
ILED = 1.5A
I2C code = 3FFh
RDS(GRN)
Green LED Switch RDS
VOUT - VIN = 3.3V
0.1
0.2
ILED = 1.5A
I2C code = 3FFh
ILEDMAX
Max. LED current(1)
VIN = 4.5V to 5.5V,
2
A
0°C
≤ TA ≤ 50°C
I1.5A,3FFh
Current accuracy (3FFh)
VIN = 2.7V to 5.5V
1.455
1.5
1.545
A
RIREF = 16.5 kΩ,
1.425
1.575
A
VOUT – VIN = 2.4V (RLED),
I1.5A,1FFh
Current (1FFh)
0.8
A
3.3V (GLED/BLED)
I1.5A,001h
Current (001h)
1.2
mA
(1)
Maximum LED current measured at VIN = 4.5V to 5.5V with heat sink on top of LM3435 with no air flow at 0°C ≤ TA ≤ 50°C. Operating
conditions differ from the above is not ensured.
4
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