参数资料
型号: KIT34844AEPEVBE
厂商: Freescale Semiconductor
文件页数: 53/62页
文件大小: 0K
描述: KIT EVAL BOARD 10CH LED BACKLGHT
标准包装: 1
系列: *
MC34844A
TYPICAL APPLICATIONS
I2C MODE (Master Mode)
VIN = 24V
1.0K
U9
1
47uH
2
VOUT
LED MATRIX (16S10P)
0
0
VDC1
47uF
+
10uF
2.2uF
2.2uF
2.2uF
0
EN_Master
SCK
SDA
A0SEN_Master
CONTROL UNIT
5.6K
0
4700pF
100K
100pF OUTPUT
MASTER CK
VDC1
4.64K
ISET = 60mA
VDC1
0
1
28
31
23
29
22
24
7
25
27
26
6
30
19
20
21
VIN
VDC1
VDC2
VDC3
COMP
SLOPE
CK
EN
PWM
SCK
SDA
A0/SEN
M/~S
ISET
PIN
NIN
SWA
SWB
VOUT
PGNDA
PGNDB
FAIL
I0
I1
I2
I3
I4
I5
I6
I7
I8
I9
GND
4
3
32
5
2
18
8
9
10
11
12
13
14
15
16
17
33
D533
2
3.3K
1
VCC
30uF
+
4.7uF
0
220pF
220pF
220pF
220pF
220pF
MC34844A
0
220pF
220pF
220pF
220pF
220pF
* FOR I2C MODE - SETI2C bit should be set High.
* FOR SM-BUS MODE - EN pin should be connected to
0
GND or taken low by the Control Unit.
Figure 29. I 2 C (Master Mode)
Conditions: V IN = 24 V, V OUT = 47 V, Load = 16S10P, I LED = 60 mA, OVP = 53V, f SW = 300 kHz
I2C MODE (Slave Mode)
VIN = 24V
1.0K
U11
1
47uH
2
VOUT
LED MATRIX (16S10P)
0
0
MASTER CK
47uF
+
10uF
2.2uF
2.2uF
2.2uF
0
EN_Slave
SCK
SDA
A0SEN_Slave
CONTROL UNIT
5.6K
0
4700pF
100K
100pF INPUT
VDC1
0 4.64K
ISET = 60mA
VDC1
0
1
28
31
23
29
22
24
7
25
27
26
6
30
19
20
21
VIN
VDC1
VDC2
VDC3
COMP
SLOPE
CK
EN
PWM
SCK
SDA
A0/SEN
M/~S
ISET
PIN
NIN
SWA
SWB
VOUT
PGNDA
PGNDB
FAIL
I0
I1
I2
I3
I4
I5
I6
I7
I8
I9
GND
4
3
32
5
2
18
8
9
10
11
12
13
14
15
16
17
33
D553
2
3.3K
1
VCC
30uF
+
4.7uF
0
220pF
220pF
220pF
220pF
220pF
MC34844A
0
220pF
220pF
220pF
220pF
220pF
* FOR I2C MODE - SETI2C bit should be set High.
* FOR SM-BUS MODE - EN pin should be connected to
GND or taken low by the Control Unit.
0
Figure 30. I 2 C (Slave Mode)
Conditions: V IN = 24 V, V OUT = 47 V, Load = 16S10P, I LED = 60 mA, OVP = 53V, f SW = 300 kHz
34844A
Analog Integrated Circuit Device Data
Freescale Semiconductor
53
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