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34844 Datasheet(PDF) 26 Page - Freescale Semiconductor, Inc

Part # 34844
Description  10 Channel LED Backlight Driver with Integrated Power Supply
PDF  37 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

34844 Datasheet(HTML) 26 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
26
Freescale Semiconductor
34844
TYPICAL APPLICATIONS
LOGIC COMMANDS AND REGISTERS
Figure 11. HIGH VOUT application (Manual Mode)
Conditions: VIN = 60 to 72V, VOUT = 120 V, Load = 40S8P, ILED = 60 mA, OVP = 125 V, fSW = 300 kHz
EN_DLY
VDC2
EN_DLY
PWM = 200Hz (5V)
0
VIN = 60V to 72V
0
0
0
0
VOUT = 120V
VOUT
0
VDC1
VDC1
0
0
0
0
0
0
ISET =
60mA
LED MATRIX (40S8P)
OVP = 125V
10
10
PDS3200
PDS3200
1
3
2
4.64K
4.64K
220pF
220pF
220pF
220pF
220pF
220pF
0.1UF
0.1UF
3SMBJ5941B-TP
47V
3SMBJ5941B-TP
47V
18K
18K
6.8K
6.8K
27K
27K
100pF
100pF
200k
200k
270K
270K
+
10uF
250V
+
10uF
250V
2.2uF
2.2uF
MMSZ5268BT1G
82V
MMSZ5268BT1G
82V
10uF
100V
10uF
100V
FDS2572
FDS2572
2.2uF
2.2uF
150UH
7447709151
150UH
7447709151
220pF
220pF
3.3nF
3.3nF
+
47uF
100V
+
47uF
100V
220pF
220pF
+
10uF
250V
+
10uF
250V
+
10uF
250V
+
10uF
250V
220pF
220pF
10.0K
10.0K
0.1UF
100V
0.1UF
100V
MC34844A
MC34844A
VIN
1
VDC1
28
COMP
29
EN
7
CK
24
M/~S
30
PWM
25
SCK
27
SDA
26
A0/SEN
6
ISET
19
PIN
20
NIN
21
SWA
4
SWB
3
VOUT
32
PGNDA
5
PGNDB
2
VDC2
31
FAIL
18
I0
8
I1
9
I2
10
I3
11
I4
12
I5
13
I6
14
I7
15
I8
16
I9
17
VDC3
23
SLOPE
22
GND
33
220pF
220pF
2.2uF
2.2uF
2.2uF
2.2uF
1uF
250V
1uF
250V
220pF
220pF
1.0k



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