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MC34844EP Scheda tecnica(PDF) 10 Page - Freescale Semiconductor, Inc

Il numero della parte MC34844EP
Spiegazioni elettronici  10 Channel LED Backlight Driver with Integrated Power Supply
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Produttore elettronici  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC34844EP Scheda tecnica(HTML) 10 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
Freescale Semiconductor
10
34844
ELECTRICAL CHARACTERISTICS
STATIC AND DYNAMIC ELECTRICAL CHARACTERISTICS
MC34844
Line Regulation (9)
VIN=7.0 to 28 V
IOUT/VIN
-0.2
-
0.2
%/V
Load Regulation (9)
VLED = 8.0 to 65 V (all Channels)
IOUT/VLED
-0.2
-
0.2
%/V
Slope compensation voltage ramp
RSLOPE = 68 kΩ
VSLOPE
-
0.49
-
V/
μs
Current Sense Amplifier Gain
ACSA
-
9.0
-
Current Sense Resistor
RSENSE
-
22
-
m
Ω
OTA Transconductance
GM
-
200
-
μS
Transconductance Sink and Source Current Capability
ISS
-
100
-
μA
Output Voltage Precharge
VHOLD
0.45
0.5
0.55
V
FAIL PIN
Off-state Leakage Current
VFAIL = 5.5 V
IFAIL_LEAK
-
-
5
μA
On-state Voltage Drop
ISINK = 4.0 mA
VOL
-
-
0.4
V
LED CHANNELS
Sink Current
ICHx Register = 255, RISET=5.1 k
Ω 0.1%, PIN&NIN = Disabled,
TA=25 °C
ISINK
49
50
51
mA
Regulated minimum voltage across drivers
Pulse Width > 4.0
μs
VMIN
675
750
825
mV
Current Matching Accuracy
IMATCH
-2.0
-
2.0
%
ISET Pin Voltage
RISET=5.1 k
Ω 0.1%
VSET
2.017
2.048
2.079
V
LED Current Amplitude Resolution
1.0 mA < ILED < 50 mA
ILEDRES
-
1.5
-
%
Off-state Leakage Current, All channels
(VCH = 45 V)
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=5.1 k
Ω 0.1%
PIN = VSET/2
PIN = VSET
IDIM_PIN
23.75
47.50
25
50
26.25
52.50
mA
Notes
9.
Guaranteed by design
Table 4. Static and Dynamic Electrical Characteristics (continued)
Characteristics noted under conditions VIN = 12 V, VOUT = 42 V, ILED = 50 mA, PWM = VDC1, M/~S = VDC1,
PIN & NIN = VDC1, -40
°C ≤ TA ≤ 105 °C, PGND = 0 V, unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit


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