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MC34844 Datenblatt(PDF) 6 Page - Freescale Semiconductor, Inc

Teilenummer MC34844
Bauteilbeschribung  10 Channel LED Backlight Driver with Integrated Power Supply
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Hersteller  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC34844 Datenblatt(HTML) 6 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
6
Freescale Semiconductor
34844
ELECTRICAL CHARACTERISTICS
ELECTRICAL CHARACTERISTICS
Table 3. Electrical Characteristics
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
SUPPLY
Supply Voltage
VIN
7.0
12
28
V
Supply Current when Shutdown Mode
Manual & SM Bus: EN = Low, SCK & SDA=Low
I2C: EN = Low, SETI2C bit = 1, CLRI2C bit = 0
ISHUTDOWN
-
-
2.0
17
-
-
μA
Supply Current when Sleep Mode
SM-Bus: EN = low, SCK & SDA= Active, SETI2C bit = 0, EN bit = 0
I2C: EN = High, SETI2C bit = 1, CLRI2C bit = 0, EN bit = 0
ISLEEP
-
3.0
-
mA
Supply Current when Operational Mode
Manual: EN= High, SCK & SDA=Low, PWM=Low
SM-Bus: EN= Low, SCK & SDA=Active, EN bit= 1, PWM=Low
I2C: EN = High, SETI2C bit = 1, CLRI2C bit = 0, EN bit = 1, PWM=Low
IOPERATIONAL
-
10.0
-
mA
Under-voltage Lockout
VIN Rising
UVLO
5.4
6.0
6.4
V
Under-voltage Hysteresis
VIN Falling
UVLOHYST
150
200
250
mV
VDC1 Voltage(5)
CVDC1 = 2.2 μF
VDC1
2.4
2.5
2.6
V
VDC2 Voltage(5)
CVDC2 = 2.2 μF
VDC2
5.5
6.0
6.5
V
VDC3 Voltage(5)
CVDC3 = 2.2 μF
VDC3
2.4
2.5
2.6
V
BOOST
Output Voltage Range(6)
VIN = 7.0 V
VIN = 28 V
VOUT1
VOUT2
8.0
31
-
-
43
60
V
Boost Switch Current Limit
IFET
2.6
2.8
3.0
A
RDSON of Internal FET
IDRAIN= 1.0 A
RDSON
-
250
500
m
Ω
Boost Switch Off-state Leakage Current
VSWA,SWB = 65 V
IBOOST_LEAK
-
-
10
μA
Peak Boost Efficiency(7)
EFFBOOST
-
90
-
%
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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