MC34844AEP Freescale Semiconductor, MC34844AEP Datasheet - Page 54

• Manufacturer Part Number: MC34844AEP
• Description: IC LED DVR BACKLIGHT 10CH 32QFN
• Manufacturer: Freescale Semiconductor

Specifications of MC34844AEP

• Constant Current: Yes
• Internal Driver: Yes
• Type - Primary: Backlight
• Mounting Type: Surface Mount
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 10
• Frequency: Adjustable/Selectable
• Voltage - Supply: 7 V ~ 28 V
• Voltage - Output: 60V
• Package / Case: 32-VFQFN Exposed Pad
• Operating Temperature: -40°C ~ 105°C
• Operating Supply Voltage: 7 V to 28 V
• Maximum Supply Current: 10 mA
• Maximum Power Dissipation: 3.9 W
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Analog Integrated Circuit Device Data
Freescale Semiconductor
2.2uF
2.2uF
VIN = 60V to 72V
0
10.0K
10.0K
EN_DLY
Conditions: V
VOUT
OVP = 125V
47uF
47uF
100V
100V
2.2uF
2.2uF
270K
270K
2.2uF
2.2uF
+
+
0
PWM = 200Hz (5V)
0
2.2uF
2.2uF
10uF
10uF
100V
100V
3SMBJ5941B-TP
3SMBJ5941B-TP
18K
18K
IN
100pF
100pF
= 60 to 72V, V
0
47V
47V
0
6.8K
6.8K
3.3nF
3.3nF
27K
27K
ISET =
0.1UF
0.1UF
100V
100V
Figure 31. HIGH VOUT application (Manual Mode)
4.64K
4.64K
60mA
0
0
OUT
200k
200k
VDC1
VDC1
EN_DLY
0
VDC2
= 120 V, Load = 40S8P, I
10
10
28
31
23
29
22
24
25
27
26
30
19
20
21
1
7
6
0.1UF
0.1UF
VIN
VDC1
VDC2
VDC3
COMP
SLOPE
CK
EN
PWM
SCK
SDA
A0/SEN
M/~S
ISET
PIN
NIN
MC34844A
MC34844A
150UH
150UH
7447709151
7447709151
0
PGNDA
PGNDB
VOUT
SWA
SWB
GND
FAIL
I0
I1
I2
I3
I4
I5
I6
I7
I8
I9
4
3
32
5
2
18
8
9
10
11
12
13
14
15
16
17
33
0
LED
FDS2572
FDS2572
1
2
MMSZ5268BT1G
MMSZ5268BT1G
= 60 mA, OVP = 125 V, f
PDS3200
PDS3200
82V
82V
3
10uF
10uF
250V
250V
+
+
0
10uF
10uF
250V
250V
220pF
220pF
+
+
10uF
10uF
250V
250V
220pF
220pF
+
+
1uF
1uF
250V
250V
220pF
220pF
SW
TYPICAL APPLICATIONS
= 300 kHz
LED MATRIX (40S8P)
220pF
220pF
VOUT = 120V
220pF
220pF
0
220pF
220pF
220pF
220pF
34844A
220pF
220pF
54