MC34844AEP Freescale Semiconductor, MC34844AEP Datasheet - Page 38

• 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 11. Static and Dynamic Electrical Characteristics (continued)
38
34844A
FAIL PIN
LED CHANNELS
Regulated minimum voltage across drivers
PIN INPUT
Notes
ELECTRICAL CHARACTERISTICS
STATIC AND DYNAMIC ELECTRICAL CHARACTERISTICS
Line Regulation
Load Regulation
Slope compensation voltage ramp - R
Current Sense Amplifier Gain
Current Sense Resistor
OTA Transconductance
Transconductance Sink and Source Current Capability
Off-state Leakage Current - V
On-state Voltage Drop - I
Sink Current
Current Matching Accuracy
I
LED Current Amplitude Resolution
Off-state Leakage Current, All channels - (V
Voltage to Disable PIN mode
PIN Bias Current
PIN = V
Analog Dimming Current
ICHx Register = 255, RISET=3.48 kΩ 0.1%
SET
21.
Characteristics noted under conditions V
-40°C ≤ T
ICHx Register = 255, PIN&NIN = Disabled, T
RISET=3.48 kΩ, 0.1%
Pulse Width > 400 ns
RISET=3.48 kΩ, 0.1%
1.0 mA < I
PIN = V
PIN = V
Pin Voltage
Guaranteed by design
SET
SET
SET
A
LED
≤ 105°C, PGND = 0 V, unless otherwise noted.
/2
(21)
(21)
< 80 mA
-
-
VIN=7.0 to 28 V
VLED = 8.0 to 65 V (all Channels)
SINK
Characteristic
FAIL
= 4.0 mA
= 5.5 V
SLOPE
CH
= 68 kΩ
IN
= 45 V)
A
=25°C
= 12 V, V
OUT
= 42 V, PWM = VDC1, M/~S = VDC1, PIN & NIN = VDC1,
I
I
OUT
FAIL_LEAK
ILED
I
V
Symbol
I
R
I
V
CH_LEAK
OUT
I
DIM_PIN
MATCH
A
PIN_DIS
I
V
SLOPE
SENSE
V
V
SINK
I
G
I
PIN
CSA
SET
SS
MIN
/V
OL
/V
M
RES
LED
IN
2.007
78.4
Min
-0.2
-0.2
625
-2.0
-2.0
2.2
36
76
-
-
-
-
-
-
-
-
-
Analog Integrated Circuit Device Data
2.048
0.49
Typ
200
100
700
9.0
1.5
22
80
40
80
-
-
-
-
-
-
-
-
Freescale Semiconductor
2.069
Max
81.6
775
0.2
0.2
0.4
2.0
2.0
50
10
44
84
-
-
-
-
-
-
-
V/μs
Unit
%/V
%/V
mΩ
mA
mV
mA
μS
μA
μA
μA
μA
%
%
V
V
V