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34844 Scheda tecnica(PDF) 8 Page - Freescale Semiconductor, Inc

Il numero della parte 34844
Spiegazioni elettronici  10 Channel LED Backlight Driver with Integrated Power Supply
PDF  37 Pages
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Produttore elettronici  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

34844 Scheda tecnica(HTML) 8 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
8
Freescale Semiconductor
34844
ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
LED CHANNELS
Sink Current
ICHx Register = 255, RISET=5.1k
Ω 0.1%, PIN&NIN = Disabled,
TA=25°C
ISINK
49
50
51
mA
Regulated minimum voltage across drivers
VMIN
675
750
825
mV
Current Matching Accuracy
IMATCH
-2.0
-
2.0
%
ISET Pin Voltage
RISET=5.1k
Ω 0.1%
VSET
2.017
2.048
2.079
V
LED Current Amplitude Resolution
1.0mA < ILED < 50mA
ILEDRES
-
1.5
-
%
Off-state Leakage Current, All channels
(VCH = 45V)
ICH_LEAK
-
-
10
μA
PIN INPUT
Voltage to Disable PIN mode
VPIN_DIS
2.2
-
-
V
PIN Bias Current
PIN = VSET
IPIN
-2.0
-
2.0
μA
Analog Dimming Current
ICHx Register = 255, RISET=5.1k
Ω 0.1%
PIN = VSET/2
PIN = VSET
IDIM_PIN
23.75
47.50
25
50
26.25
52.50
mA
NIN INPUT
Voltage to Disable NIN mode
VNIN_DIS
2.2
-
-
V
NIN Bias Current
NIN = VSET
ININ
-2.0
-
2.0
μA
Analog Dimming Current
ICHx Register = 255, RISET=5.1k
Ω 0.1%
NIN = VSET/2
NIN = 0V
IDIM_NIN
23.75
47.50
25
50
26.25
52.50
mA
OVER-TEMPERATURE PROTECTION
Over-temperature Threshold(7)
Rising
Hysteresis
OTT
150
-
165
25
175
-
°C
I2C/SM-BUS PHYSICAL LAYER [SCK, SDA]
I2C Address
ADRI2C
-
1110110
-
Binary
SM-Bus Address
ADRSMB
-
1110110
-
Binary
Input Low Voltage
VILI
-0.3
-
0.8
V
Table 3. Static Electrical Characteristics (continued)
Characteristics noted under conditions VIN = 12V, VOUT = 42V, ILED = 50mA, PWM = VDC1, M/~S = VDC1,
PIN & NIN = VDC1, -40
°C ≤ TA ≤ 105°C, PGND = 0V, unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
Notes
5.
This output is for internal use only and not to be used for other purposes
6.
Minimum and Maximum output voltages are dependent on Min/Max duty cycle condition.
7.
Guaranteed by design



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