ELECTRICAL CHARACTERISTICS
Table 3. Electrical Characteristics (continued)
Characteristics noted under conditions VIN = 12 V, VOUT = 42 V, ILED = 50 mA, PWM = VDC1, M/~S = VDC1,
PIN & NIN = VDC1, -40°C ≤ TA ≤ 105°C, PGND = 0 V, unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
Line Regulation (8)
VIN=7.0 to 28 V
IOUT/VIN
-0.2
-
0.2
%/V
Load Regulation (8)
IOUT/VLED
-0.2
-
-
0.2
-
%/V
VLED = 8.0 to 65 V (all Channels)
Slope compensation voltage ramp
VSLOPE
0.49
V/μs
RSLOPE = 68 kΩ
Current Sense Amplifier Gain
Current Sense Resistor
ACSA
RSENSE
GM
-
9.0
22
-
-
-
mΩ
μS
μA
V
OTA Transconductance
-
-
200
100
0.5
-
-
Transconductance Sink and Source Current Capability
Output Voltage Precharge
FAIL PIN
ISS
VHOLD
0.45
0.55
Off-state Leakage Current
VFAIL = 5.5 V
IFAIL_LEAK
-
-
-
-
5
μA
On-state Voltage Drop
ISINK = 4.0 mA
VOL
0.4
V
LED CHANNELS
Sink Current
ISINK
49
50
51
mA
mV
ICHx Register = 255, RISET=5.1 kΩ 0.1%, PIN&NIN = Disabled,
TA=25°C
Regulated minimum voltage across drivers
VMIN
675
750
825
Pulse Width > 4.0 μs
Current Matching Accuracy
IMATCH
VSET
-2.0
-
2.0
%
V
ISET Pin Voltage
2.017
2.048
2.079
RISET=5.1 kΩ 0.1%
LED Current Amplitude Resolution
1.0 mA < ILED < 50 mA
ILEDRES
-
-
1.5
-
-
%
Off-state Leakage Current, All channels
(VCH = 45 V)
ICH_LEAK
10
μA
PIN INPUT
Voltage to Disable PIN mode
VPIN_DIS
IPIN
2.2
-
-
-
V
PIN Bias Current
PIN = VSET
-2.0
2.0
μA
Analog Dimming Current
ICHx Register = 255, RISET=5.1 kΩ 0.1%
PIN = VSET/2
IDIM_PIN
23.75
47.50
25
50
26.25
52.50
mA
PIN = VSET
Notes
8. Guaranteed by design
34844
Analog Integrated Circuit Device Data
Freescale Semiconductor
7
FREESCALE [ Freescale ]
