MC34844AEP Freescale Semiconductor, MC34844AEP Datasheet - Page 7

• 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

Table 2. 34844 Pin Definitions (continued)
Pin Number
A functional description of each pin can be found in the Functional Pin Description section beginning on
PIN CONNECTIONS
7
34844
EP
25
26
27
28
29
30
31
32
Pin Name
COMP
VOUT
VDC1
VDC2
PWM
M/~S
GND
SDA
SCK
Pin Function
Bidirectional
Bidirectional
Passive
Output
Output
Input
Input
Input
-
Master/Slave selector
Internal Regulator 1
Internal Regulator 2
Compensation pin
Voltage Output
External PWM
Formal Name
I
I
2
Ground
2
C clock
C data
External PWM input (internal pull-down)
I
I
Decoupling capacitor for internal logic rail
Boost converter Type compensation pin
Selects Master mode (1) or Slave mode (0)
Decoupling capacitor for internal regulator
Boost Output voltage sense pin
Ground Reference for all internal circuits other than Boost FET
2
2
C data Line
C clock line
Definition
Analog Integrated Circuit Device Data
Freescale Semiconductor
page
14.